Propeller

Propeller (pronounced pruh-pel-er)

(1) A person or thing that propels.

(2) A device with a hub to which are attached evenly spaced & shaped radiating blades, rotating on a shaft to pitch against air or water to propel an aircraft, ship etc.

(3) A wind-driven (usually three-bladed) device that provides mechanical energy, as for driving an electric alternator in wind plants (not a universal use).

(4) A steamboat thus propelled; a screw steamer (now rare).

(5) In fishing, a spinnerbait.

1780: The construct was propel + -er and the original sense was “one who or that which that propels”, an agent noun from the verb propel.  The verb propel was a mid-fifteenth century form from the Middle English propellen (to drive away, expel), from the Latin propellere (push forward, drive forward, drive forth; move, impel), the construct being pro- (the prefix here use in the sense of “forward direction, forward movement”) + pellere (to push, drive), from the primitive Indo-European root pel- (to thrust, strike, drive).  The meaning “to drive onward, cause to move forward” emerged in the 1650s.  The –er suffix was from the Middle English –er & -ere, from the Old English -ere, from the Proto-Germanic -ārijaz, thought most likely to have been borrowed from the Latin –ārius where, as a suffix, it was used to form adjectives from nouns or numerals.  In English, the –er suffix, when added to a verb, created an agent noun: the person or thing that doing the action indicated by the root verb.   The use in English was reinforced by the synonymous but unrelated Old French –or & -eor (the Anglo-Norman variant -our), from the Latin -ātor & -tor, from the primitive Indo-European -tōr.  When appended to a noun, it created the noun denoting an occupation or describing the person whose occupation is the noun.  The alternative spelling propellor dates from the early days of aviation in the first years of the twentieth century and is now extinct.  The standard abbreviation is “prop”, the use noted from military aviation since 1914.  Propeller is a noun; the noun plural is propellers.

Although the concept was used in antiquity and inventors and others (most famously Leonardo da Vinci (1452–1519))  had for centuries experimented, the use of the word in mechanical engineering dates from 1809 and was from nautical design describing the application of a “device for moving vessels on or under the water”.  In aircraft design the theory of the use of “propeller” appears in papers and drawings in the 1840s (in what were then described as “flying machines”) and models were built which demonstrated a “proof of concept” although it would be decades before lightweight engines of sufficient power existed to allow experiments in aerodynamics and construction to be powered.  The first known rendering of an aircraft propeller in a recognizably modern form dates from 1853.  The modern propeller uses two or (usually) more twisted, airfoil-shaped blades mounted around a shaft which are spun to provide propulsion of a vehicle through water or air, or to cause fluid flow, as in a pump.  The lift generated by the spinning blades provides the force that propels the vehicle or the fluid although this lift does not of necessity have to induce an actual upward force; its direction is simply parallel to the rotating shaft.

Lindsay Lohan getting off the propeller driven (technically a turbo-prop) NAPA Shuttle, The Parent Trap (1998).

The term “to disembark” was borrowed from nautical use and of late "to deplane" has entered English which seems unnecessary but the companion “to disemplane” seems more absurd still; real people continue to “get on” and “get off” aircraft.

The terms “impeller” & “propeller” both describe devices which use various implantations of the “rotating blade(s) design and are used in mechanical systems to take advantage of the properties of fluid dynamics to harness specific energy for some purpose.  A propeller is a type of rotating device with blades designed to propel or move a fluid (typically a gas or a liquid) by generating thrust; they are most associated with marine vessels, aircraft and some industrial applications.  In aircraft, propellers can be attached to wing-mounted engines or mounted just about anywhere on a fuselage although historically a location at the front has been most common.  In marine applications, propellers have on specialized vessels been located to the sides of the hull but they almost always emerge at or close to the stern.  An impeller is a rotating component with blades or vanes (almost always enclosed in a housing), typically used for fluid or air distribution, such as a pump or a compressor, the primary purpose being to increase flow or pressure.  The classic impellers those in centrifugal pumps where they spin, creating a flow of fluid (liquid or air) by imparting centrifugal force to the substance; in practice, impellers such accelerate liquids are more common.

So an impeller & propeller do much the same thing, using blades to propel some form of fluid.  The use of different terms is helpful because in practice they are very different devices and the distinction that one is external and the other located within a housing is handy and the origin of that seems to lie in the construct of impeller which came first, dating from circa 1680 (as an agent noun from the verb impel) in the sense of “someone or something which impels”.  What the design of an impeller does is use the energy from the rotation to increase the flow or pressure of the fluid and it that it’s the reverse of a turbine, the rotation of which extracts energy from, and reduces the pressure of the flow.  Engineers also have a number of highly technical rules about what is and is not defined as an impeller base on the whether the entry and exit of the fluids occur axially or radially but it seemed impossible to construct such definitions as absolutes so for most the simpler distinctions are more helpful.  In engineering, impellers have been recorded as a machine or component name since 1836.

News Corp website 22 January 2024.  To refer to a jet engine’s nacelle as a propeller could (almost) be defended on the basis it’s the jet engine which “propels” the aircraft but this is more likely an example of (1) the decline in the quality of journalists and (2) what happens when there are no sub-editors to correct the mistakes.  In time, artificial intelligence (AI) should improve things.    

The verb impel dates from the early fifteenth century and was from the Middle English impellen, from the Latin impellere (to push, strike against; set in motion, drive forward, urge on), the construct an assimilated form of in- (into, in, on, upon), from the primitive Indo-European root en- (in) + pellere (to push, drive), from the primitive Indo-European root pel- (to thrust, strike, drive).  The construct of the Latin impellō was in- +‎ pellō (push, drive), from the Proto-Italic pelnō or pelnaō, a nasal-infix present derived from the primitive Indo-European pelh- (to drive, strike, thrust).  The Latin prefix –in could be appended to create a negative (un-, non-, not etc) but here was used as an intensifier, another possible meaning (in, within, inside) coincidental to the mechanical devices being usually mounted within housings.

Propellers and impellers both use blades (although those of the latter are often in the form of a single piece wither cast, molded, or (occasionally) forged.  Turbines also use blade-like parts but these are called vanes and an industry which seems unable to decide on terminology is the burgeoning business of wind-power; the huge rotating assemblies on wind turbines are referred to variously as vanes, blades or rotors.  Rotor blades are familiar for the use in helicopters which is essentially an airframe where a large-scale propeller sits atop the structure, pointing upwards and rather than “propeller blades”, the accepted term is “rotor blades”, the design of which permits both lift and directional thrust although some exotic multi-engined machines have rotors in housings which, to maximize performance, can themselves be rotated to operate as conventional propellers.

Supermarine Seafang (1946) with contra-rotating propellers.  The Seafang (1946-1947) was powered by the 37-litre (2240 cubic inch) V12 Rolls-Royce Griffon (1941-1955) and was the final evolution of the Spitfire (1938-1948) derived Seafire (1943-1947) and Spiteful (1944), the trio all designed for use on Royal Navy aircraft carriers, the series enjoying success despite the basic design being hampered by the narrow undercarriage which made landings a challenge (something corrected on the Spiteful & Seafang).  Series production of the Seafang was contemplated but eventually only 18 were built because the jet-powered de Havilland Sea Vampire (1945-1950) proved capable of carrier operations, surprising some at the Admiralty who doubted the jets could operate from anywhere but land.

Contra-rotating propellers (known also as coaxial contra-rotating propellers) were implemented on some World War II (1939-1945) aircraft to address several aerodynamic and performance challenges associated with the fitting of piston engines developing power well in excess of anything the designers had envisaged.  The attraction were many and included reducing the “torque Reaction”, the phenomenon in which the torque generated by a spinning propeller cause an aircraft to yaw in the opposite direction of the propeller's rotation.  Pilots had long been trained to counteract this by use of the rudder (especially during take-off and low-speed-flight) but as engine power rose and propeller blades became bigger, heavier and more numerous, the effect greatly was exaggerated.  On two or four-engined machines, the obvious solution was to have the blades on each wing rotate in opposite directions but on the most powerful of the single-engined fighters, the two units were mounted one behind the other and this had the benefit also of allowing the rear propeller to recover energy from the swirling airflow (the slipstream) generated by the forward.  That allowed designers to harness the greater power without increasing the diameter of the propellers, avoiding issues with ground clearance and supersonic tip speeds (one of the reasons the Soviet Air Force’s swept-wing (unusually in a propeller aircraft) Tupolev Tu-95 (Bear) bomber (in service 1956-1993) was so loud was because the propeller tips exceeded the speed of sound).  Had jet technology not emerged when it did, the contra-rotating propellers would have become more common, wartime adoption was limited by the complexity in assembly and additional maintenance demands.

A flight of Republic P-47D Thunderbolts with under-wing drop-tanks.

The propeller also influenced other aspects of the aircraft.  When the prototype Republic P-47 Thunderbolt (1941-1945) first took to the air, it was the largest, heaviest single-seat piston-engined fighter ever produced (a distinction it still enjoys today).  Even the early versions used an engine rated at 2000 horsepower (later this would rise to 2800) and to harness this output demanded a large propeller.  The 12 foot (3.7 m) diameter of this four-bladed monster meant the landing-gear had to be extraordinarily long and the only way it could be accommodated was to have them retract inward, otherwise the heavy wing armament (8 x .50 inch (12.7 mm) M2 Browning machine guns (425 rounds per gun)) wouldn’t have fitted.

Chrysler XI-2220 V16.  The splined shaft is where the propeller attaches.

With things like the Thunderbolt, the Hawker Tempest and the later Supermarine Spitfires (and its derivatives), the piston-engined fighter achieved its final evolutionary form, the jet engine offering a path to performance unattainable while the physics of propellers imposed limits.  However, had the use of the A-Bombs not ended the war in 1945, development of the propeller aircraft would have continued because the early jets lacked thrust and reliability as well as suffering a rate of fuel consumption which rendered them unsuitable for long-distance operations.  With the war against Japan envisaged as lasting well into 1946, development of faster, more powerful piston engines continued although, given the parlous state of the Japanese military, it’s dubious at least there was much of a rationale for this but the military industrial complex is a creature of inertia and Chrysler’s research had perfected a new aero-engine for the Thunderbolt.  The XI-2220 was a 2,220 cubic inch (36.4 litre) V16 which was rated at a basic 2450 horsepower with some 4000 hp available when tuned for wartime use but with the end of the conflict, all such developments were cancelled and attention switched to the brave new world of jets and swept wings.  Thus ended the era of the big propeller-driven fighters, the V16 stillborn, as was the other extraordinary aero-engine on the drawing board: Britain's 32-cylinder Napier-Sabre H-32 which was a scaled-up version of their H24.

Contra

Contra (pronounced kon-tra)

(1) Against; contrary or opposed to; in opposition or contrast to; against, anti.

(2) An arrangement (usually between companies) whereby they exchange goods and/or services on a basis agreeable to both, often without any exchange of cash.

(3) In politics (sometimes used in a derogatory sense), a conservative; originally tied to Nicaraguan counter-revolutionaries.

(4) In accounting, as contra-entry or contra-account, an entry or account which cancels another entry or account.

(5) In music, an informal term for any of the musical instruments in the contrabass range (contrabassoon, contrabass clarinet or (especially) double bass).

(6) In dance, a type of country dance most identified with the New England region in the US (mostly obsolete).

1350–1400: From the Middle English contra (against, over against, opposite, on the opposite side; on the contrary, contrariwise) from the Latin contrā.  The Latin contrā (against) meant originally "in comparison with" and was the ablative singular feminine of com-teros, from the Old Latin com (with, together) + -tr, (zero-degree form of the comparative suffix -ter-).  As used as a noun in English, it meant "a thing which is against another" by 1778, an evolution of the earlier sense of "the contrary or opposite" from the 1640s.  English also picked up the practice from Late Latin in using contra as a prefix.  In French, it became contre- which passed into English as counter-, the Old English equivalent of which was wiðer (which survived in dialectical English as withers and in Scottish as widdershins), from wið (with, against).  There was also contraindicate (to indicate the contrary of (a course of treatment, etc)) from the 1660s, an evolution from the 1620s forms contraindicated & contraindication, contra-indicate the rare verb.  The use to describe the forces opposed to the Sandinista regime in Nicaragua since 1979 began in 1981, Contra a shortened form of the Spanish contrarrevolucionario (counter-revolutionary).  Contra is a noun, verb, adjective & adverb; the noun plural is contras.  

The Contras and the Sandinistas

Sandinista National Liberation Front (FSLN) Flag.

The contras were active from 1979 to the early 1990s in opposition to the left-wing government in Nicaragua (the Sandinista Junta of National Reconstruction).  The term was a short-form of la contrarrevolución (counter-revolution) although there were intellectuals in the movement who disliked the label because they thought it suggested something negative or reactionary.  They preferred comandos (commandos) though peasant sympathizers also called the rebels los primos (the cousins), reflecting in many ways the character of the early movement as one of civilian irregulars.  In the White House, contra wasn’t greatly favored either and by the mid-1980s, marketing types in the Reagan administration (1981-1989) introduced “democratic resistance” to press conferences though it never caught on outside 1600 Pennsylvania Avenue.  Undeterred, by the press’s scepticism towards newspeak, on the ground, the ever-optimistic CIA liaison operatives encouraged use of la resistencia.

National flag of Nicaragua.

Believing the domino theory applied as much to central America as once it had been applied in east Asia, almost from the beginning the contras received military and financial aid from the US.  Congress cut the appropriations but the White House continued support with funding provided through a variety of imaginative (and covert) money-making schemes and slush funds which culminated in the Iran-Contra affair (Iran-Contragate), the biggest scandal of the Reagan years.  The affair (noted if not openly discussed by the ayatollahs in the Persian ماجرای ایران-کنترا‎ and definitely not by the Contras in the Spanish Caso Irán–Contra) was a back channel CIA (the US Central Intelligence Agency) operation run out of the White House, secretly to sell weapons to the Islamic Republic of Iran, then subject to an arms embargo.

The cover story for the operation was the armament shipments were part of an intricate web of deals to free seven American hostages held in Lebanon by the Hezbollah, a paramilitary operation which started as modestly as many others but which would evolve into a something which simultaneously would effectively take over the Lebanese state while acting as the regional proxy of Tehran (or a sub-contractor to Iran’s Islamic Revolutionary Guard depending on the interpretation).  The story wasn’t entirely untruthful but the administration arranged the first sales prior to the hostages being seized.

Sandinista graffiti.

Ronald Reagan’s (1911–2004; US president 1981-1989) world view was never as simple as his detractors suggest but it was starker than most of the Washington establishment and he didn’t support the position, which had become predominate during the Cold War and certainly after the Vietnam war, that the geopolitical structure of the world should be thought of as stable and permanent.  That was the view of the power-realists like Henry Kissinger (b 1923; US national security advisor 1969-1973 & secretary of state 1973-1977), theorists who believed problems needed to be managed over decades whereas Reagan thought problems needed to be solved: the Soviet Union was a problem, Cuba was a problem and the Sandinistas were a problem.  The Congress however had prohibited the provision of aid to the Contras.

In the Spanish, contra was a direct inheritance from the Latin contrā and in the Old Spanish there was also cuentra as well, with a diphthongization of the stressed Latin /ŏ/. As the word was generally atonic, over time, the unstressed variant contra eventually prevailed.  The synonym is en oposición a.  Although in English “contra” is less frequently used as a “stand-alone” word as is the case in Spanish, it does appear, often as a kind of “verbal shorthand” where appears as a clipping of “contrary”.  That use may to some extent be class based because, pronounced correctly, the slipping doesn’t save a syllable, “contrary” said correctly as the “U” kon-tree rather than the “non-U” kuhn-trair-ee. 

In 1985, the administration began a diversion of the profits the Iran operation to the Contras although it’s still not certain the president authorized this, so many of the supporting documents having been destroyed, the lesson of Nixon’s tapes well-learned: If stuff gets burned it can’t become evidence.  Within a year the story broke and after many denials about many things, Reagan was forced to appear on nationally television, taking “full responsibility” for the affair, suggesting what began with good diplomatic intensions, ran astray in a classic case of mission creep.  A commission was appointed to investigate and concluded no evidence existed to prove the president either knew of or approved the detail of operations.  Although several dozen administration officials were indicted and some were convicted, many were overturned on appeal and while a couple served terms of probation, most of the rest were pardoned by President George HW Bush (1924–2018; George XLI, US President 1989-1993) even before coming to trial, some noting the evidence suggested George XLI had his own reasons for not wishing the some matters to be aired in court although whether that included the role the CIA allegedly played in the distribution of crack cocaine in US cities during the 1980s has never been clear.

Supermarine Seafang (1946) with contra-rotating propellers.  The Seafang (1946-1947) was powered by the 37-litre (2240 cubic inch) V12 Rolls-Royce Griffon (1941-1955) and was the final evolution of the Spitfire (1938-1948) derived Seafire (1943-1947) and Spiteful (1944), the trio all designed for use on Royal Navy aircraft carriers, the series enjoying success despite the basic design being hampered by the narrow undercarriage which made landings a challenge (something corrected on the Spiteful & Seafang).  Series production of the Seafang was contemplated but eventually only 18 were built because the jet-powered de Havilland Sea Vampire (1945-1950) proved capable of carrier operations, surprising some at the Admiralty who doubted the jets could operate from anywhere but land.

Contra-rotating propellers (known also as coaxial contra-rotating propellers) were implemented on some World War II (1939-1945) aircraft to address several aerodynamic and performance challenges associated with the fitting of piston engines developing power well in excess of anything the designers had envisaged.  The attraction were many and included reducing the “torque Reaction”, the phenomenon in which the torque generated by a spinning propeller cause an aircraft to yaw in the opposite direction of the propeller's rotation.  Pilots had long been trained to counteract this by use of the rudder (especially during take-off and low-speed-flight) but as engine power rose and propeller blades became bigger, heavier and more numerous, the effect greatly was exaggerated.  On two or four-engined machines, the obvious solution was to have the blades on each wing rotate in opposite directions but on the most powerful of the single-engined fighters, the two units were mounted one behind the other and this had the benefit also of allowing the rear propeller to recover energy from the swirling airflow (the slipstream) generated by the forward.  That allowed designers to harness the greater power without increasing the diameter of the propellers, avoiding issues with ground clearance and supersonic tip speeds (one of the reasons the Soviet Air Force’s swept-wing (unusually in a propeller aircraft) Tupolev Tu-95 (Bear) bomber (in service 1956-1993) was so loud was because the propeller tips exceeded the speed of sound).  Had jet technology not emerged when it did, the contra-rotating propellers would have become more common, wartime adoption was limited by the complexity in assembly and additional maintenance demands.

Skeg

Skeg (pronounced skeg)

(1) In shipbuilding, a fin-like projection supporting a rudder and protecting the propeller(s) at its lower end, located abaft a sternpost or rudderpost.

(2) In the design of smaller boats, an extension of the keel, designed to improve steering.

(3) In the slang of naval architects (in certain contexts), a stump or branch (the after-part of a ship's keel).

(4) In the slang of the General Motors (GM) stylists, a “lower fin”, matching the upper on the rear of 1961-1962 Cadillacs.

(5) The fin which acts as a stabilizer on a surfboard.  To suffer some injury after being hit by one of these fins is to be “skegged”.

(6) In Australian slang, a surfer; a person who leads the lifestyle of a surfer (used also derisively in the form “fake skeg” of those who adopt the style an appearance without actually surfing.

(7) A type of wild plum (obsolete).

(8) A kind of oat (obsolete).

(9) In Northern English dialectal use, a look or glance.

(10) In many cultures, a slang term applied to youth suggesting slovenliness, a predilection to petty crime and other anti-social behavior; also used widely in Scottish slang for a surprising variety of purposes including legs, trousers, dirt, scotch eggs, sex and women of loose virtue.

1590–1600: From a dialectal term for a stump, branch, or wooden peg, from the Dutch scheg (cutwater), of Scandinavian origin and related to the Swedish skog and the Old Norse & Icelandic skegg (projection on the stern of a boat).  In some Nordic languages, skegg means “beard” and was from the Old Norse skegg, from the Proto-Germanic skaggiją, from the primitive Indo-European skek, kek-, skeg & keg- (to jump, skip, move, hurry).  The name of the English coastal town of Skegness is though a construct of the Old Norse skegg (beard) + -nes (headland) and was thought a reference to the geography, the original settlement situated farther east at the mouth of The Wash (thus jutting out like a beard from a face).  A link with the Old Norse name Skeggi is thought unlikely.  Skeg is a noun; the noun plural is skegs.

A gang of four Sceggs, Sydney, Australia.

The skegs of nautical architecture should not be confused with the homophone Sceggs, the acronym for students of Sydney Church of England Girls Grammar school (S.C.E.G.G.S.), seen also in the adjectival forms sceggesque & sceggish (one whose style suggests something similar to the stereotypical student of the school).  

Lindsay Lohan in wet suit, with surfboard, Malibu, 2011.  The stabilizing skeg is the black protrusion at the back of the board.

On nautical vessels, skegs where they exist fulfill a significant function but they are not an essential part of hull design.  A skeg is an external structural feature, a vertical tapering projection permanently fixed at the aft, usually close to the centre-line.  Most are located in front of the rudder and structurally can often be considered a sternward extension of the keel (the internal, longitudinal members which lend much strength of the hull).  Although in military vessels there are additional functions, the moist significant contribution of a skeg is in hydrodynamics, a skeg designed to influence the flow patterns and thus affecting the dynamics of both the rudder (which is usually in line with the skeg) and propeller(s).  The design is thus a finely tuned equation because while a skeg inherently induces drag, the way it alters the flow pattern can reduces the drag and resistance suffered by the rudder and propeller(s), essentially by transforming the turbulent characteristics of the flow to laminar at the stern.  Historically, skegs were a vital component in maintaining a course and that’s still an important consideration in smaller vessels but in larger craft, improved rudder and advanced navigational as well as stabilization technologies like thrusters have meant skegs are no longer of the same significance in maintaining directionality.

An US Navy Iowa class battleship, showing the inner set of propeller shafts wholly enclosed in a pair of skegs.  On the big ships, the skegs were designed also as load-bearing supports while in dry-dock.

In the modern age, skegs became an unusual feature on warships, a relative few so equipped and the designs varied, some with only a few of their shafts inside skegs while others encased all.  While the traditional design imperatives were shared with other ships, for navies, they also offered the advantage of affording some degree of protection for rudders and propellers against torpedo attack.  Historically, another important attribute of skegs was what they add to a hull’s structural strength, making the (inherently weaker) stern resistant to outside forces and all the last of the US Navy’s dreadnoughts featured skegs.  Their hulls narrowed towards the stern and to save weight lacked the sternpost plates the British, German and Japanese navies always fitted to their battleships and the skegs compensated for this, offering a hull with similar rigidity.

The US Navy’s South Dakota class battleships were fitted with an unusual set of skegs, the design dictated by the relatively short hull, the large outboard skegs helping to reduce the adverse effects of fluid dynamics induced by the hull’s abrupt end.

However, advantages in engineering and metallurgy meant much of the functionality afforded by skegs could be achieved in other ways and skegs became unfashionable in naval architecture.  The modeling and simulations made possible by supercomputers meant hull designs could be rendered which mastered the turbulence caused by fluid dynamics so rudders and propellers were less affected so the skeg was in many cases a source of performance-sapping skin-friction drag with little compensating benefit.  Indeed, not only did this hamper performance, in some cases excessive vibration was caused, something which could only to a degree be ameliorated by changes to the propellers’ configurations.

Cadillac’s Skegs, 1961-1962

Cadillac Coupe DeVille, (1959, left & 1960 right).

The 1959 Cadillac’s tail-fins are the best remembered and most emblematic of the brief, extraordinary era during which the absurdly macropterous flourished.  They’re rightly known as “peak-fin” but it’s a myth they were the tallest because, measured from the ground, those on the 1961 Imperial are about a half-inch (12 mm) more vertiginous.  The attractions of the style however were fading and in 1960, General Motors (GM) and Chrysler (Ford never really got involved) began to tone them down.  Another cultural phenomenon is that because of the large number of pink 1959 Cadillacs which now exist, many assume they were a common sight when new, the things perhaps made memorable by the sight of the one owned by the admirable Jayne Mansfield (1933–1967).  However, the factory never made a pink 1959 Cadillac and in the era, it was only in 1956 such a color was on the option list and Ms Mansfield had one of those while her 1959 convertible received a custom re-paint.

Cadillac Coupe de Ville, (1961, left & 1962 right).

For the 1961 & 1962 range the fins became lower still but in compensation, the design staff added a lower fin and these, informally they called “skegs”.

1961 Cadillac Coupe de Ville, (left), one of the design proposals for 1961 (centre) & captured German V2 rocket (right).

While of course an extravagance, the skegs could have part of something even wilder because among the design proposals which emerged from the General Motors Advanced Design Studios was one which clearly was the ultimate expression of the motif of the 1950s which borrowed so much from the aerospace industry,  The proposed fins essentially were those of ballistic missiles which for decades were an evolution from the German Vergeltungswaffen zwei (V-2), developed first by the German military with the code name Aggregat 4 (A4).  Vergeltungswaffen is translated variously as "retaliatory weapons" or "reprisal weapons" but in English use is often written as “vengeance weapons”.  Aerodynamically, presumably the proposal has something to commend it and it proceeded far enough into the selection for an expensive, full-sized clay model to be rendered (one wonders what the rejected sketches looked like) but ultimately the longer though somehow more restrained skegs were preferred.

The 1961 Cadillac: The long (left) and slightly less long (right) of it.

One quirk of Cadillac’s brief embrace of the skeg was there were two iterations: skeg long and skeg short.  Whether in response to or in anticipation of some owners preferring their Cadillac in a more conveniently sized package, between 1961-1963 a “short-deck” option was made available on certain body styles.  Offered first on the six-window Sedan de Ville, an encouraging 3,756 were built so the option was in 1962 offered on the four-window Sixty Two Town Sedan but sales actually dropped to 2600, the decline in interest confirmed the next year when only 1575 of the four-window Park Avenue Sedan de Ville were sold.  Using the same 129.5 inch (3289 mm) wheelbase as the regular models but eight inches (200 mm) shorter in overall length (215 vs 223 inches (5461 vs 5664 mm)), space utilization was obviously a little better but the market had spoken.  With fewer than eight-thousand of the short-deck models sold across three seasons while the standard editions shipped in the tens of thousands, the flirtation with (slightly) more efficient packaging was abandoned for 1964; in the course of the following decade, Cadillacs would grow another seven inches (178 mm) and gain over 400 lb (181 kg).

For 1963, the short-deck models returned for another dismal season but the skegs were abandoned, never to return.  The fins however the design studio found harder to forsake, conscious perhaps it was on the 1948 Cadillac they’d first appeared.  Then, modestly sized, they’d been an allusion to the tail-planes used on the twin-boomed Lockheed P-38 Lightning (1939) but the fashion had passed and the fins had to go so, inch by inch, there was a retreat from the heights and exuberance of 1959 until in 1966 the fins were vestigial, a hint which for decades would be retained.

1955 Ford La Tosca.

A half-decade before Cadillac decided their customers needed skegs, Detroit had pondered the idea.  Shown in 1955, Ford’s La Tosca (named apparently after Giacomo Puccini’s (1858–1924) three act opera Tosca (1900) although the intended connection seems to have been a general sense of the “emotional and dramatic” rather than the fate of the doomed protagonist) was unusual in that it appeared not as a full-scale “concept car” but in the form of a 3/8 scale model, used to demonstrate the possibilities offered by a remote-controlled chassis, directed through the medium of radio waves.  To achieve this, rather than build custom components (as the Pentagon would have done), Ford’s engineers dipped into the corporate parts bin and wired together the regulator and relay from a power window apparatus, the electric motor used to lower a convertible’s soft-top, a power seat mechanism and a standard, 12 volt car battery.  The system worked flawlessly and, depending on the topography, La Tosca could remotely be controlled at distances greater than a mile (1.6 km).  According to Ford records, the project began simply as an “…internal exercise to show students in the Advanced Studio how hard it was, even for professional designers, to design a car” but so long did the model take to complete (the complex curves and canted structures challenging to render in what was then the still novel fibreglass) that “mission creep” intruded, thus the radio-controlled chassis.

1954 Lincoln Futura (1954) and Ford Mystere (1955).  In Detroit, these were at the time typical of what was authorized to be built as "concept cars", machines destined for the show circuit to gauge public reaction.  If they now seem rather wild, much of what never left the stylists' (they weren't yet "designers") sketch pads and drawing boards truly was bizarre.  

Stylistically, La Tosca was in the vein of the corporation’s other concept vehicles of the era such as the Lincoln Futura (1954) and Ford Mystere (1955), the trio reflecting the way the industry was applying motifs from missiles and jet-propelled aircraft such as Perspex bubble-tops, tubes, fins and exhaust nacelles.  Most of these proved to be brief, though memorable relics of jet-age aesthetics, fads although elements were easily recognizable in the 1958 Lincoln and Cadillac of course would later take up the skegs.  The remote-control concept was ahead of its time though it did find a niche in model cars and aircraft.  In the twenty-first century new versions of the technology are now mainstream with cranes, trucks and trains routinely operated from sometimes thousands of miles away although usually on mine-sites and other remote locations (experiments with vehicles on public roads are being undertaken).  Despite these advances, the industry regards the technology as transitional and intends as soon as practicable to remove human (and thus costly and unreliable) element completely, re-allocating control to an entirely autonomous AI (artificial intelligence) model which, without complaint or toilet breaks, can be worked 24/7/365.

Rat

Rat (pronounced ratt)

(1) In zoology, any of several long-tailed rodents of the family Muridae, of the genus Rattus and related genera, distinguished from the mouse by being larger.

(2) In (scientifically inaccurate) informal use, any of the numerous members of several rodent families (eg voles & mice) that resemble true rats in appearance, usually having a pointy snout, a long, bare tail, and body length greater than 5 inches (120 mm).

(3) In hairdressing, a wad of shed hair used as part of a hairstyle; a roll of material used to puff out the hair, which is turned over it.

(4) In the slang of certain groups in London, vulgar slang for the vagina.

(5) As “to rat on” or “to rat out”, to betray a person or party, especially by telling their secret to an authority or enemy; to turn someone in.

(6) One of a brace of rodent-based slang terms to differentiate between the small-block (mouse motor) and big-block (rat motor) Chevrolet V8s built mostly in the mid-late twentieth century but still available (as "crate" engines) from US manufacturers.

(7) As RAT, a small turbine that is connected to a hydraulic pump, or electrical generator, installed in an aircraft and used as a power source.

(8) Slang term for a scoundrel, especially men of dubious morality.

(9) In the criminal class and in law enforcement, slang for an informer.

(10) In politics, slang for a person who abandons or betrays his party or associates, especially in a time of trouble.

(11) Slang for a person who frequents a specified place (mall rat, gym rat etc).

(12) In hairdressing, a pad with tapered ends formerly used in women's hair styles to give the appearance of greater thickness.

(13) In the slang of blue-water sailors, a place in the sea with rapid currents and crags where a ship is prone to being broken apart in stormy weather.

(14) In zoology (in casual use), a clipping of muskrat.

Pre 1000: From the Middle English ratte, rat & rotte, from the Old English ræt & rætt, and the Latin rodere from the Proto-Germanic rattaz & rattō (related also to the West Frisian rôt, the German Ratz & Ratte and the Swedish råtta & the Dutch rat), of uncertain origin but perhaps from the primitive Indo-European rehed- (to scrape, scratch, gnaw).  Zoological anthropologists however point out it’s possible there were no populations of rats in the Northern Europe of antiquity, and the Proto-Germanic word may have referred to a different animal.  The attestation of this family of words dates from the twelfth century.  Some of the Germanic cognates show considerable consonant variation such as the Middle Low German ratte & radde and the Middle High German rate, ratte & ratze, the irregularity perhaps symptomatic of a late dispersal of the word, although some etymologists link it with the Proto-Germanic stem raþō (nom); ruttaz (gen), the variations arising from the re-modellings in the descendants.

Mall rats.  In North America and other developed markets, there is now less scope for habitués because changing consumer behavior has resulted in a dramatic reduction in the volume of transactions conducted in physical stores and some malls are being either abandoned or re-purposed (health hubs and educational facilities being a popular use).  

The human distaste for these large rodents has made rat a productive additive in English.  Since the twelfth century it’s been applied (usually to a surname) to persons either held to resemble rats or share with them some characteristic or perception of quality with them. The specific sense of "one who abandons his associates for personal advantage" is from the 1620s, based on the belief that rats leave a ship about to sink or a house about to fall, and this led to the meaning "traitor” or “informant" although, perhaps surprisingly, there no reference to rat in this sense prior to 1902 where as the modern-sounding sense of associative frequency (mall-rat, gym-rat etc) was noted as early as 1864, firstly as “dock-rat”.  Dr Johnson dates “to smell a rat”, based on the behaviour of cats, to the 1540s.  Sir Boyle Roche (1736-1807), was an Irish MP famous for mangled phrases and mixed metaphors, of the best remembered of which was “I smell a rat; I see him forming in the air and darkening the sky; but I'll nip him in the bud".  There’s the rat-terrier (1852), the rat-catcher (1590s), the rat-snake (1818), rat-poison, (1799), the rat trap (late 1400s), the rat-pack (1951) and rat-hole which in 1812, based on the holes gnawed in woodwork by rats meant “nasty, messy place”, the meaning extended in 1921 to a "bottomless hole" (especially one where money goes).  Ratfink (1963) was juvenile slang either coined or merely popularized by US custom car builder Ed "Big Daddy" Roth (1932-2001), who rendered a stylised rat on some of his creations, supposedly to lampoon Mickey Mouse.

Cricket's most infamous rat (mullygrubber), MCG (Melbourne Cricket Ground), 1 February, 1981.  In the 1970s brown & beige really had been a fashionable color combination but this was the combo's death knell.

Rat has a specific meaning in the cricketing slang of the West Indies, referring to a ball which, after being delivered by the bowler, rather than bouncing off the pitch at some angle, instead runs along the ground, possibly hitting the stumps with sufficient force to dislodge the bails, dismissing the batsman, the idea being of a rat scurrying across the ground.  In Australian slang, the same delivery is called a mullygrubber which, although it sounds old-fashioned, is said to date only from the 1970s, the construct thought based on the dialectal rural term mully (dusty, powdery earth) + grub(ber) in the sense of the grubs which rush about in the dirt if disturbed in such an environment.  Such deliveries are wholly serendipitous (for the bowler) and just bad luck (for the batsman) because it's not possible for such as ball to be delivered on purpose; they happen only because of the ball striking some crack or imperfection in the pitch which radically alters it usual course to a flat trajectory.  If a batsman is dismissed as a result, it's often called a "freak ball" or "freak dismissal".  Of course if a ball is delivered underarm a rat is easy to effect but if a batsman knows one is coming, while it's hard to score from, it's very easy to defend against.  The most infamous mullygrubber was bowled at the Melbourne Cricket Ground (MCG) on 1 February 1981 when, with New Zealand needing to score six (by hitting the ball, on the full, over the boundary) of the final delivery of the match, the Australian bowler sent down an underarm delivery, the mullygrubber denying the batsman the opportunity to score and securing an Australian victory.  Although then permissible within the rules, it was hardly in the spirit of the game and consequently, the regulations were changed.

The Ram Air Turbine

Ram Air Turbine (RAT) diagram.

The Ram Air Turbine (RAT) is a small, propeller-driven turbine connected to a hydraulic pump, or electrical generator, installed in an aircraft to generate emergency power.  In an emergency, when electrical power is lost, the RAT drops from the fuselage or wing into the air-stream where it works as a mini wind-turbine, providing sufficient power for vital systems (flight controls, linked hydraulics and flight-critical instrumentation).

Vickers VC10 in BOAC (British Overseas Airways Corporation (1939-1974) livery.

Built between 1962-1970, although fast and a favorite with passengers because the rear-engine layout guaranteed a quiet cabin, only 54 VC10s were built and, in a market dominated by Boeing's epoch-making 707 (1956-1978), success proved elusive.  Even before the 747 in 1969 ushered in the wide-body era it was clear the elegant VC10 was a cul-de-sac but the airframe enjoyed a long career.  The RAF (Royal Air Force) had some configured as VIP transports and the last of those used as tankers for in-flight re-fueling platforms weren't retired until 2013.

Most modern commercial airliners are equipped with RATs, the first being installed on the Vickers VC10 in the early 1960s and the big Airbus A380 has the largest RAT propeller in current use at 64 inches (1.63 metres) but most are about half this size.  It’s expected as modern airliners begin increasingly to rely on electrical power, either propeller sizes will have to increase or additional RATs may be required, the latter sometimes the desirable choice because of the design limitations imposed by the height of landing gear.  A typical large RAT can produce from 5 to 70 kW but smaller, low air-speed models may generate as little as 400 watts.  Early free-fall nuclear weapons used rats to power radar altimeters and firing circuits; RATS being longer-lasting and more reliable than batteries.  

A RAT deployed.

The airline manufacturers have been exploring whether on-board fuel-cell technology can be adapted to negate the need for RAT, at least in the smaller, single-aisle aircraft where the weight of such a unit might be equal to or less than the RAT equipment.  The attraction of housing in an airliner's wing-body fairing is it would be a step towards the long-term goal of eliminating an airliner's liquid-fuelled auxiliary turbine power unit.  Additionally, if the size-weight equation could be achieved, there’s the operational advantage that a fuel-cell is easier to test than a RAT because, unlike the RAT, the fuel-cell can be tested without having to power-up most of the system.  The physics would also be attractive, the power from a fuel cell higher at lower altitudes where as the output of a RAT declines as airspeed decreases, a potentially critical matter given it’s during the relatively slow approach to a landing that power is needed to extend the trailing edge of the wing flaps and operate other controls.

If the weight and dimensions of the fuel cell is at least "comparable" to a RAT and the safety and durability testing is successful, at least on smaller aircrafts, fuel-cells might be an attractive option for new aircraft although, at this stage, the economics of retro-fitting are unlikely to be compelling.  Longer term research is also looking at a continuously running fuel cell producing oxygen-depleted exhaust gas for fuel-tank inerting (a safety system that reduces the risk of combustion in aircraft fuel tanks by lowering the oxygen concentration in the ullage (the space above the fuel) to below the level needed to support a fire, typically by replacing oxygen with an inert gas like nitrogen), and water for passenger amenities, thereby meaning an aircraft could be operated on the on the ground without burning any jet-fuel, the fuel-cell providing power for air conditioning and electrical systems.

1944 Messerschmitt Me 163 Komet  (1944-1945).

The only rocket-powered fighter ever used in combat, the Messerschmitt Me 163 Komet had a small RAT in the nose to provide electrical power.  The early prototypes of the somewhat more successful (and much more influential) Messerschmitt Me 262 jet fighter also had a propeller in the nose for the first test flights but it wasn't a a RAT; it was attached to a piston engine which was there as an emergency backup because of the chronic unreliability of the early jet engines.  It proved a wise precaution, the jets failing on more than one occasion.

1974 Suzuki's air-cooled GT380 Sebring with Ram Air System (left) and 1975 Suzuki GT750 with water-cooling (right).

The other “Ram Air” was Suzuki’s RAS (Ram Air System), fitted to the GT380 Sebring (1972-1980) and GT550 Indy (1972-1977) as well as (off and on) several version of the smaller two-cylinder models.  It wasn’t used on the water-cooled GT750 Le Mans (1972-1977) because the radiator acted to impede the airflow to the engine.

The GT380, GT550 and GT750 were two-stroke triples noted for an unusual 3-into-4 exhaust system which the central header-pipe was bifurcated, thus permitting four tail-pipes.  There was no justification in engineering for this (indeed it added cost and weight) and it existed purely for visual effect, allowing an emulation of the look on the four-cylinder Hondas and Kawasakis.  Ironically, despite the additional metal, the asymmetric 3-into-3 system on the Kawasaki triples (1969-1976) is better remembered although the charismatic (if sometimes lethal) qualities of the machines may be a factor in that; exhaust systems do exert a powerful fascination for motor-cyclists.  The RAS was nothing more than a cast aluminum shroud fixed atop the cylinder head to direct air-flow, enhancing upper cylinder cooling.  The “ram air” idea had been used in the 1960s by car manufacturers to “force feed” cool air directly into induction systems and when tested it did in certain circumstances increase power but whether Suzuki's RAS delivered more efficient cooling isn’t clear.  When the twin-cylinder GT250 Hustler (1971-1981 and thus pre-dating the pornography magazine Hustler, first published in 1974) was revised in 1976, the RAS was deleted and replaced by conventional fins without apparent ill-effect but the RAS was light, cheap to produce, maintenance-free and looked sexy so some advantages were certainly there.  Interestingly, the companion GT185 (1973-1978) retained the RAS for the model’s entire production.

Big and small-block Chevrolet V8s: the Rat and the Mouse

Small and big-block Chevrolet V8s compared, the small-block (mouse) to the left in each image, the big-block (rat) to the right.

Mouse and rat are informal terms used respectively to refer to the classic small (1955-2003) and big-block Chevrolet V8s (1958-2021).  The small-block was first named after a rodent although the origin is contested; either it was (1) an allusion to “mighty mouse” a popular cartoon character of the 1950s, the idea being the relatively small engine being able to out-perform many bigger units from other manufacturers or (2) an allusion to the big, heavy Chrysler Hemi V8s (the first generation (Firepower) 331 cubic inch (5.4 litre), 354 (5.8) & 392 (6.4) versions) being known as “the elephant”, the idea based on the widely held belief elephants are scared of mice (which may actually be true although the reason appears not to be the long repeated myth it’s because they fear the little rodents might climb up their trunk).  Zoologically, "bee" might have been a better choice; elephants definitely are scared of bees.  The mouse (small-block) and rat (big-block) distinction is simple to understand: the big block is externally larger although, counterintuitively, the internal displacement of some mouse motors was greater than some rats.  

1970 Chevrolet Chevelle SS 396 (with 402 cid V8).

Whether that seeming anomaly (actually common throughout the industry during the big-block era) amused or disturbed the decision-makers at Chevrolet isn't known but in 1970 when the small block 400 (6.6) was introduced, simultaneously the big-block 396 (6.5) was enlarged to 402 (6.6) but the corporation then muddied the waters by continuing to call the 402 a "Turbo-Jet 396" when fitted to the intermediate class Chevelle, the rationale presumably that "SS 396" had such strong "brand recognition".  Available since 1965, by 1969 the SS 396 Chevelle was finally out-selling the Pontiac GTO (which in 1964 had seeded the muscle car movement) so the attachment was understandable.  Further to confuse people, the 400 was advertised as the "Turbo-Fire 400" while if fitted to the full-size line, the 402 was called the "Turbo-Jet 400".  Presumably, the assumption was anyone understanding the 400 & 402 ecosystems would buy the one they wanted while those not in the know would neither notice nor care.  Nor was the deviation in displacement between what was on the badge and what lay beneath the hood (bonnet) exclusive to Chevrolet, there being a long list of things not quite what was on the label although the true specifications usually were listed in the documentation and even the advertising.  The variations occurred for a number of reasons but rarely was there an attempt to deceive, even if sometimes things were left unstated or relegated to the small print.

The “428 Cobra Matter”

That’s not to say there were no disputes about the difference between what was “in the tin” compared with what was “on the tin”.  In June 1969, a certain Mr Karl Francis “Fritz” Schiffmayer (1935-2010) of Lake Zurich, Illinois, wrote to Ford’s customer relations department complaining about the “427 Ford Cobra” he had purchased (as a new car) from a Chicago “Ford Dealer”.  What disappointed Mr Shiffmayer was the performance which didn’t match the widely publicized numbers achieved by many testers and, perhaps more to the point, he found his “$8500 Super Ford could barely keep up with” various $5000 Chevrolets.  For a Ford driver, few things could be more depressing.  Upon investigation, he discovered that despite “‘427’ signs all over the engine and the front fenders”, his car was not “a ‘427’ as advertised and labelled but a ‘428’”.  Both V8s were around seven litres but were in many ways not comparable.

Mr Shiffmayer's letter to Ford, 23 June 1969.

Notionally, Mr Shiffmayer got more than he paid for (ie 428 v 427 is nominally an extra cubic inch) and had he bought a dozen (12) bread rolls from the bakery and been supplied a “baker’s dozen” (13) there’d have been no grounds for complaint because bread rolls are a “fungible” (ie functionally identical) so getting 13 is always better than getting 12 at the same price.  However, the 427 and 428 engines, although from the same FE (Ford-Edsel) family and externally similar (until closely inspected), were very different internally with the former notably more oversquare (ie big-bore) and fitted with cross-bolted main bearings; additionally, the 427s used in the Cobras featured “side-oiling”, a more extensive system of lubrication which afforded priority deliver of oil to the bottom-end, making the engine more robust and better suited to the extreme demands of competition.  By contrast, the a Cobra’s 428 was a modified version of the “Police Interceptor 428”, a high-output edition of a powerplant usually found in Ford’s full-sized line including luxury cars and station wagons where it’s smoothness and effortless low-speed torque was appreciated.  The “Police Interceptor” specification was literally that: the engine used by law enforcement in highway patrol vehicles and for street use, it offered a useful lift in performance but it was not suitable for racetracks.  Later, Ford would “mix & match” the 427 & 428 to create the 428 Cobra Jet, the 427’s heads, intake manifold and some other “bolt-on” bits & pieces creating a combination of power and torque close to ideal for ¼ mile (402 m) runs down drag strips although even then Ford cheated, under-rating the output so the cars would be placed in a different category.  That year, in drag racing, the 428 Cobra Jet Mustangs dominated their class which prompted the sanctioning body to change the rules, imposing their own nominal output ratings rather than accepting those of the manufacturer.  Still, even the Cobra Jet 428 remained suitable only for street and strip because ¼ mile runs were done in a straight line and, without the cross-bolting and enhanced lubrication, it wouldn’t have matched the 427’s ability to endure the extreme lateral forces encountered on high-speed circuits.

AC Shelby Cobra CSX3209 after 427 transplant.

That “427 Cobras” with 428 engines even existed was a product of circumstances rather than planning.  Although now million dollar collectables, it’s sometimes forgotten the 427 Cobra was a commercial failure and that meant production numbers never reached the levels required for homologation to be granted for competition in the category for which it was intended so as well as not selling as well as the small block predecessors on which the model’s reputation was built, nor did the seven litre version ever match its success on the track.  When it came time to build the second batch of 100 427 Cobras, the engine was in short supply because the intricacies in construction, coupled with the wider bore being at the limit the block would accommodate (at the foundry, with a slight shifting of the casting cores, a 427 block would have to be scrapped), it was expensive to produce and inconvenient for Ford to schedule in the small batches the sales supported.  The cheap, mass-produced 428 Police Interceptor was both readily available and half the cost so it was an attractive alternative for Shelby and that it bolted straight without needing any changes made it more desirable still; thus 428-powered “427s”.  For the final run of 48, Shelby procured from Ford genuine 427 side-oilers so the 100 428s were a minority of the big-blocks used and many have since been converted (“rectified” some prefer to say) with the substitution of a 427.  Interestingly, four of the 428s were fitted with automatic transmissions which actually made them more-suitable for street use but nobody seems subsequently have done this as a modification.

Shelby American's reply to Mr Shiffmayer, 21 July 1969.

As it was, As it was, Mr Shiffmayer decided to persevere and kept Shelby Cobra CSX3209 until he died, in the 1970s replacing the 428 with a specially built “tunnel port” (a trick with the pushrods to optimize the fluid dynamics of the fuel-air flow) 427.  Whether he was impressed with the reply (Ford referred his letter to Shelby American) he received in response to his complaint isn’t known but it’s an interesting document for a number of reasons:

(1) “…during the five year existence of the Cobra, three engines were used, the 289, the 427 and the 428.”  Actually, the first 75 used the 260.

(2) “Only a very few of the 959 Cobras built contained the 427 engine.”  Actually of the 998 built (in fairness this wasn’t in 1969 the agreed “final count” but it’s hard to understand how 959 was calculated) more than 150 had the 427 and whether this constitutes “very few” is debatable but it’s also not relevant to the complaint.

(3) “The 427 is a nomenclature such as the GT-500 is for the Shelby car.  It does not relate to the cubic displacement of the engine.  We are sorry that this misunderstanding occurred.”  Actually, when the Cobra 427 was released, “427” was a direct reference to displacement.  The “GT500” label was never likely to cause a “misunderstanding” because (1) there was no Ford 500 cid engine and (2) the GT500 was always advertised as being equipped with the 428.

Indisputably as labeled: 1966 Shelby 427 S/C Cobra (CSX 3040).  In 2018, it sold at auction for US$2,947,500.

So, the letter from Shelby really wasn’t a great deal of help (it was dated the day after man set foot on the moon so perhaps the writer's attention was divided).  Were such a case now to go to court several matters would need to be considered:

Was it notorious (ie widely known; common knowledge) in the circles of potential purchasers of such a car that some were powered by 427s and some by 428s and the differences between the two were well documented?  According to some sources, it was only after the “428 Cobra matter” began to attract comment that sales literature was updated to reflect the changed specification while others maintain publication was concurrent with production.

Was the fact the car had only “427” badges an indication of which engine was fitted or just a “model name” al la the Shelby GT500 (which used a 428) & GT350 (which used either a 289 or 302 (and later a 351))?  That originally (in 1965) “427” was a reference to the 427 engine seem incontestable but the question would be whether this changed to a mere “model name” when the 428 was adopted.  It would seem the evidential onus of proof of that would rest with Shelby American.

When making the decision to purchase, did the buyer rely on representations from an authority (in this case a “Ford dealer”) which might reasonably have been expected to (1) possess and (2) communicate all relevant facts?  In that matter, the court would need to consider whether, in the circumstances, there is any substantive difference between a “Ford dealer” and a “Shelby franchised dealer”.  This would be decided by (1) any competing claims from the parties and (2) what documents were supplied prior to or at the point of purchase.

Is it relevant that in 1966-1967 when Ford offered both the 427 & 428 in the Galaxie, that car was sold as the “7 Litre” (they really did use the French spelling) irrespective of which seven litre (427 or 428) V8 was fitted?  Given that, should the Cobra have been thus labelled and was the continued use of the 427 badge a misrepresentation in 428-powered cars?

Was the dealer aware of the buyer’s background?  Mr Shiffmayer was (1) an engineer with a degree in mechanical engineering from the University of Wisconsin and (2) he was not only an owner of a 289 Shelby Cobra but also raced it with notable success.  If the dealer was aware of those facts that doesn’t absolve them of a responsibility fully to disclose all relevant information but a court could consider it a mitigating factor.  If the dealer was aware those facts, what would then have to be considered is whether it would have been reasonable for it to be assumed the buyer either knew of the mechanical details or could reasonably have been expected to know.

Evidence: Shelby American "Shelby Cobra 427" spec sheet listing the 428 as the engine, thereby suggesting "427" was a model name rather than a reference to a specific engine.  The significance of this document rests on whether it appeared before or after Shelby American began selling 428 powered Cobras.