Showing posts sorted by date for query Kammback. Sort by relevance Show all posts
Showing posts sorted by date for query Kammback. Sort by relevance Show all posts

Monday, October 5, 2026

Breadvan

Breadvan (pronounced bred-vann)

(1) A delivery vehicle adapted for carrying loaves of bread or other bakery items for delivery to retail outlets, hotels, cafés etc.

(2) As the Ferrari 250 GT SWB (short wheelbase) “Breadvan”, a one-off vehicle produced in 1962.

(3) As a descriptor of the “breadvan” style applied to the rear of vehicles to seek aerodynamic advantages in competition, variously applied, mostly during the 1960s & 1970s.

1840s: A compound word, the construct being bread + van.  Bread was from the Middle English bred & breed (kind of food made from flour or the meal of some grain, kneaded into a dough, fermented, and baked), from the Old English brēad (fragment, bit, morsel, crumb), from the Proto-West Germanic braud, from the Proto-Germanic braudą (cooked food, leavened bread), from the primitive Indo-European berw- & brew- (to boil, to see).  Etymologists note also the Proto-Germanic braudaz & brauþaz (broken piece, fragment), from the primitive Indo-European bera- (to split, beat, hew, struggle) and suggest bread may have been a conflation of both influences.  It was cognate with the Old Norse brauð (bread), the Old Frisian brad (bread), the Middle Dutch brot (bread), the German Brot (bread), the Scots breid (bread), the Saterland Frisian Brad (bread), the West Frisian brea (bread), the Dutch brood (bread), the Danish & Norwegian brød (bread), the Swedish bröd (bread), the Icelandic brauð (bread), the Albanian brydh (I make crumbly, friable, soft) and the Latin frustum (crumb).  It displaced the non-native Middle English payn (bread), from the Old French pain (bread), having in the twelfth century replaced the usual Old English word for "bread" (hlaf).  Van was short for caravan, from the Middle French caravane, from the French caravane, from the Old French carvane & carevane, (or the Medieval Latin caravana), from the Persian کاروان‎ (kârvân), from the Middle Persian (kārawān) (group of desert travelers), from the Old Persian, ultimately from the primitive Indo-European ker- (army).  Most famously, the word was used to designate a group of people who were travelling by camel or horse on the variety of routes referred to as the Silk Road and it reached the West after being picked up during the Crusades, from the Persian forms via the Arabic qairawan and connected ultimately to the Sanskrit karabhah (camel).  Breadvan (also as bread-van) is a noun; the noun plural is breadvans.

Breadvans various

Progress: Horse-drawn breadvan (left) and Austin (left) & Morris (right), breadvans, Melbourne, Australia, 1959 (right).  The Morris Commercial J-type was produced between 1949 and 1961 and between 1957 and 1960s there was also a “badge-engineered” (and mechanically identical) Austin version.  The BMC (British Motor Corporation) conglomerate (that ultimately would be absorbed into the doomed British Leyland (1968-1986) became notorious for “badge-engineering” (one model produced under six different brands) their passenger cars but their light commercial vehicles often were produced as both an Austin and Morris, the original rationale being to provide products to sometimes separate dealer networks.

The breadvans were first horse-drawn and came into use in the in the 1840s.  These vans were used to transport freshly baked bread from bakeries to homes and businesses in cities and towns in the UK, Europe, North America and Australasia.  The breadvan was adopted as an efficiency measure, being a significant improvement on the traditional system of delivery which was usually a “baker’s boy” carrying baskets of bread on foot to customers.  The horse-drawn breadvans allowed bakers increase production and expand their customer base.  The construction of the vehicles was not particularly specialized but they did need to be (1) waterproof to protect the goods from the elements and (2) secure enough that the bread was not accessible by opportunistic birds, dogs or thieves.  Enzo Ferrari (1898-1988) became famous for the cars carrying his name (though never much associated with breadvans) but his imperious attitude to customers and employees alike led to a number of them storming out of Maranello and creating their own machines.  Some, like Lamborghini endured through many ups & downs, others like Bizzarrini survived for a while and ATS (Automobili Turismo Sport) produced a dozen exquisite creations before succumbing to commercial reality.  Another curious product of a dispute with il Commendatore was the Ferrari 250 GT SWB “Breadvan”.

Ferrari 250 GT SWB “Breadvan” in profile (left) and leading a 250 GT SWB, the car on which it was based.

Ferrari’s 250 GTO became available to customers in 1962 and one with his name on the list was Count Giovanni Volpi di Misurata (b 1938), principal of the Scuderia Serenissima (Scuderia SSS Republica di Venezia) operation but when Enzo Ferrari found out Volpi was one of the financial backers of the ATS project, he scratched the count’s name from the order book.  Through one of the back channel deals still a feature of Italian commerce, Volpi did obtain a GTO but he decided he’d like to make a point to il Commendatore so opted to make something even better for his team’s assault on the 1962 Le Mans 24 hour endurance classic.  In the Scuderia Serenissima stable was what was reputed to be the world’s fastest Ferrari GT SWB (serial number 2819 GT) and it was decided to update this to a specification beyond even that of the GTO, a task entrusted to Giotto Bizzarrini (1926-2023) who, with remarkable alacrity, performed the task in the workshops of noted coachbuilder Piero Drogo (1926–1973).  The changes wrought were radical indeed.  To obtain the ideal centre of gravity, the 3.0 litre (180 cubic inch) V12 engine was shifted 4¾ inches (120 mm) rearward, sitting entirely behind the front axle and mounted lower, something permitted by the installation of a dry sump lubrication system.  Emulating the factory GTO, six downdraft, twin choke Weber carburetors sat atop the inlet manifold, the tuned engine generating a healthy 300 HP (horsepower).  Given the re-engineering, on paper, the car was at least a match for the GTO except it lacked the factory machine’s five-speed gearbox, running instead the standard four-speed.  

Ferrari 250 GT SWB “Breadvan”.  It's not known if anyone has ever calculated the rear compartment's capacity but it would have held a few loaves and they'd likely have been delivered more quickly than most.

What really caught the eye however was Bizzarrini’s striking bodywork, the sharp nose so low a Perspex cover had to be fabricated to shield the cluster of a dozen velocity stacks of the Webers protruding above the hood (bonnet) line.  Most extraordinary however was the roofline that extended from the top of the windscreen to the rear where it was sharply cut-off to create what remains perhaps the most extreme Kammtail ever executed.  The count was impressed, the creation matching the GTO for power while being 100 kg (220 lb) lighter and aerodynamically more efficient.  Accordingly he included it in the three-car Ferrari team he assembled for Le Mans along with the GTO and a 250 TR/61; it's appearance caused a sensation, the French dubbing it la camionnette (little truck) but it was the English nickname “Breadvan” that really caught on.  To a degree the count proved his point.  Under pressure from Ferrari the organizers forced the Breadvan to run in the prototype class against pure racing cars rather than the GTOs in the granturismo category but in the race, it outpaced the whole GT field until, after four hours, a broken driveshaft forced its retirement.  Subsequently, it was entered that season in a further four events, scoring two GT class victories and a class track record before being retired.  Count Volpi sold the car in 1965 for US$2,800 (it was then just another no longer competitive, "clapped-out" race car) but it has survived to be a popular entrant on the historic racing circuit.

2021 Ferrari Breadvan homage by Niels van Roij Design.

Dutch designer Niels van Roij (b 1984) runs a specialist design house and in 2019 was commissioned to built a one-off “Ferrari Breadvan homage”.  Two years in the making, the project was based on a 550 Maranello (tipo F133, 1996-2002), the model chosen because it was the company’s last front-engined, V12 built with the classic open-gate manual transmission.  With the increase in the money supply (most of which went to the upper few percent of the population), the market for bespoke creations (thought effectively extinct since the demise in the 1960s of most of the coach-building business) has grown and for those not content with the long and expensive option lists now offered by some manufacturers, true exclusivity can be obtained by commissioning a one-off creation.  Typically, the things cost at least US$2 million.  

Breadvans, crashed and fixed.

Breadvans ancient and (slightly more) modern can crash or otherwise be damaged and while some will be written off (typically if replacement is economically more viable than repair), if the vehicle is sufficiently valuable, it will be repaired.  The Ferrari Breadvan hasn’t been sold in a public exchange since the mid-1960s although it has shifted between collections on a number of occasions but always via private treaties.  A current market valuation is thus speculative but as a unique Ferrari 250 SWB of historical significance, it will be a big number and current estimates are between US$25-30 million, a reasonable increase from the US$2,800 realized in 1965.  So, the dented Ferrari Breadvan gets fixed and England’s RS Panels, based in Attleborough Fields Industrial Estate, Nuneaton was entrusted with the task after one “prang”.  Specialists in the aluminum and steel panels forming the usually curvaceous but occasionally brutalist lines of classic-era Ferraris, Maseratis, Jaguars, Aston Martins and such, as many owners discovered after RS returned their repaired or restored cars, they found the fit and finish was of a higher standard than when they left the factory, all those years ago.  Ferraris especially were notorious for looking gorgeous but if one looked too closely at the welds and joins not usually seen, the impression could be a little dented.  After emerging from RS Panels, it’s likely the Breadvan is in its finest ever condition.

1965 Ford GT40 Mark I (left) 1966 Ford J Car (centre) & 1967 Ford GT40 Mark IV (right).

As well as the ATS, Lamborghinis and Bizzarrinis, Enzo Ferrari’s attitude to those who disagreed with him also begat the Ford GT40, a well-known tale recounted (with a little license) in the 20th century Fox film Ford vs Ferrari (2019).  In 7.0 litre (427 cubic inch) form, the GT40 Mark II won at Le Mans in 1966 but Ford’s engineers were aware the thing was overweight and lacked the aerodynamic efficiency of the latest designs so embarked on a development program, choosing the project name “J Car”, an allusion to the “Appendix J” regulations (one of the few genuinely good ideas the FIA (Fédération Internationale de l'Automobile (the International Automobile Federation) came up with before it became world sport's dopiest regulatory body) with which it conformed.  The aluminum honeycomb chassis was commendably light and, noting the speed advantage gained by the Ferrari Breadvan in 1962, a similar rear section was fabricated with tests confirming the reduction in drag.  Unfortunately, the additional speed it enabled exposed the limitation of the breadvanesque lines: above a certain speed the large flat surface acted like an aircraft’s wing and the ensuing lift provoked lethal instability, one fatal crash proving the lightweight chassis also was fragile.  The “J Car” was thus abandoned and a more conventional approach was taken for both the chassis and body of the GT40 Mark IV and it proved successful, in 1967 gaining the second of Ford’s four successive victories at Le Mans (1966-1969).

The modern Ferrari "breadvans"

Ferrari 250 GT SWB “Breadvan” (left) and 2013 Ferrari FF (right).

Rather than the 250 Breadvan, it was probably market research that inspired the Ferrari FF (2011-2016), the Italian factory's first take on the shooting brake concept although in the 1950s there had been some built with opening rear hatches a la the fixed-roof versions of the Jaguar E-Type (1961-1974).  Over the decades, there had been more than a dozen "variations on the theme of a Ferrari station wagon" by a number of coachbuilders, all in their own way distinctive but none improved the lines of the donor car on which they were based, unlike the Jaguar XJS shooting brakes which looked so good it was remarkable one never appeared in the factory's catalogue.  According to the factory, "FF" stood for "Ferrari Four" a reference to the AWD (all wheel drive) configuration although it may also have been intended to remind potential buyers the thing could seat four and the promotional material included pictures of ski-racks and even a roof-mounted “ski-box”, able to hold ski-gear for four.  Clearly, the combination of AWD traction and the carrying capacity was a hint this was a car for those who liked to drive to the ski-fields.  The Ferrari FF "shooting brake" (the factory seems not to have used the term although most journalists seems to thought it best except the better informed who referenced the 250 "Breadvan") was very much in the same vein, its capaciousness closer to that of a “big coupé” rather than any size of station wagon although the factory did circulate photographs of the rear-compartment comfortably (if snugly) packed with a set of golf-clubs and a half dozen-odd travel bags; with folding rear seats, Ferrari claimed a trunk (boot) capacity of 450-800 litres (16-28 cubic feet).

1966 Jensen FF Series 1 (left) and 2017 Ferrari GTC4Lusso (right).

Despite the name, there was apparently no intention to link the car with the Jensen FF (1966-1971) a pioneering machine which featured both all wheel drive (AWD although then still called 4WD (four wheel drive)) and anti-lock brakes (an early, mechanical implementation derived from use in aviation which was most effective).  Anti-lock braking is essentially a form of “pressure modulation” and the modern abbreviation "ABS" doesn’t reference the often quoted  “Anti-Lock Braking System”; the correct source is Anti-Bloc System, the name adopted in 1966 when Daimler-Benz and the Heidelberg electronics company Teldix (later absorbed by Bosch) began a co-development of a hybrid analogue-electronic system.  The system used on the Jensen FF was an early, mechanical implementation derived from use in aviation which have proved effective for aircraft landing on icy runways).

Marketing opportunity for niche players: A Lindsay Lohan breadvan, Reykjavik, Iceland.

The Jensen FF really wasn’t a shooting brake although the huge and distinctive rear window was also a hatch so it did offer some of the advantages.  Despite the high price, the Jensen FF sold remarkably well but its market potential was limited because all Ferguson’s development work had been done in England using RHD (right-hand-drive) vehicles and the system was so specific it wasn’t possible to make a left-hand-drive (LHD) FF without re-engineering the whole mechanism, the apparatus so bulky the passenger's front seat was narrower than that of the driver so much did things intrude.  Consequently, only 320 were built, apparently at a financial loss.  Ferrari did better with their FF, over 2000 sold between 2011–2016 and although the packaging may have been remarkably efficient, with a 6.3 litre (382 cubic inch) V12 it was never going to be economical, listed by the 2013 US Department of Energy as the least fuel-efficient car in the midsize class, sharing that dubious honor with the bigger, heavier (though not as rapid) Bentley Mulsanne.  For owners, the 335 km/h (208 mph) top speed was presumably sufficient compensation.  When production ended, the FF was replaced by the conceptually similiar GTC4Lusso (2016-2020) and, unusually, in 2017 the factory announced the GTC4Lusso T, the appended "T" a reference to it being powered by a twin-turbocharged V8 rather than its older sibling's V12; the V8 was RWD (rear wheel drive) but did retain the 4WS (four-wheel steering) system.  The last of the pair left the factory late in 2020 and were not replaced so there have been no Ferrari Breadvans since.

Homemade breadvans

Ford Anglia, Rallye Monte-Carlo, 1962 (left) & Ford Anglia "breadvans" built for New Zealand Allcomer racing during the 1960s.

In the US, at a time with a million dollars was still a lot of money, Ford spent probably at least a million on the GT40’s abortive breadvan but in New Zealand, it doubtful the amateur racers in the popular “Allcomers” category (a close cousin of the admirable Formula Libre) spent even UD$100 in the development of their “breadvans”.  In the Allcomer category, the “breadvans” (again a nod to the Count Volpi’s 1962 Ferrari) were Ford Anglias with a rear section modified to gain some aerodynamic advantage.  The English Ford Anglia 105E (1959–1968) had an unusual reverse-angle rear-window (borrowed from some of the corporation's US Lincolns & Mercurys), a design chosen to optimize headroom for back-seat passengers and that it did but it also induced additional drag which, while of no great consequence at the speeds attained in rallying or on public roads, did compromise the top speed, something of great concern to those who found the light, agile machines otherwise well-suited to racing.  In the spirit of improvisation for which New Zealand Allcomer racing was renowned, “breadvans” soon proliferated, fabricated variously from fibreglass, aluminum or steel (and reputedly even paper-mache although that may be apocryphal and based on the use of the technique to create molds for a fibreglass structure) and the approach was successful, Anglias competitive in some forms of racing well into the 1970s by which time some had, improbably, been re-powered with V8 engines, an Allcomer solution for just about any problem.

La camionnette: Citroën Baguette Vans

1972 Citroën SM with Michelin's RR “plastic” wheels.

The Citroën SM (1970-1975) was not the success the manufacturer had anticipated in the heady days of the mid 1960s when the design parameters were finalized.  Then, oil was cheap, seemingly limitless and rules about exhaust emissions and safety so minor as to be barely an impediment to the imagination of engineers but, in a very short time much would change, notably US legislators beginning to impose passenger vehicle emission standards in an attempt to reduce the smog that had become a blight upon many cities and the publication in 1965 of Unsafe at Any Speed by crusading lawyer Ralph Nader (b 1934).  Nader’s book was an incitement of the design of US-built cars but what it triggered was an on-rush of legislation that would be imposed on any car sold in that lucrative market and while re-engineering was viable for some imports selling in volume, for niche products, the accountants couldn’t make the economics work; the SM was one of many victims, the last sold in the US leaving the showroom in 1973.  That meant its demise there couldn’t be blamed on the first oil shock (1973-1974) that wrought such a change on the global industry and one of the ironies of the era is that among vehicles sold in the US in its price range and offering such performance (especially were top-speed used as a yardstick), the SM was the one with the lowest fuel consumption, achieved by the use of a relatively small (a V6 of 2.7 or 3.0 litres (163 or 181 cubic inch)) and what were at the time industry-leading aerodynamics.

1974 Citroën HY (1947–1981) breadvan.

Things were however different in Europe where gas (petrol) was more expensive and an engine of that displacement was thought “large”; greatly SM sales were affected although the writing was on the wall even before OAPEC (Organization of Arab Petroleum Exporting Countries) on 17 October, 1973 imposed their first oil embargo, the car’s reputation for unreliability and costly maintenance spreading rapidly although that was a product more of infrastructure than design.  While by the standards of the time a complex machine, experience has shown well-maintained SMs are commendably robust but the problem was the Maserati-sourced V6 engine was unusual in using a 90o configuration (it was essentially a cut-down V8) meaning aspects of the tuning were novel to most mechanics and the hydraulic systems were in some ways different to those used on the DS (1955-1975), the car on which most mechanics had gained their experience of such things.  As it was, sales in Europe dropped precipitously after 1971 (the first year of full-production) and the SM’s future likely anyway would have been bleak had it not been doomed by the rising price of gas and the loss of the lucrative US market.

1988 Citroën 2CV (1948-1990) camionnette.

The SM had been one of the cases of “mission creep” that were a characteristic of the industry in the optimistic and prosperous 1960s.  The origin design brief issued in 1960 had been for a “high-performance DS”, a car that although the lines were upon release in 1955 stunningly modernist (“like a spaceship” a phrase frequently used in press reports), was always hampered by having to use an ancient and rather agricultural four-cylinder power-plant, the funds to develop the planned flat-6 the car deserved never made available.  Even in 1970, the Maserati V6 wasn’t ideal for such a machine but Citroën in 1968 had acquired the Italian concern with the express purpose of gaining an engine powerful enough for a grand-touring car (then a challenging assignment for something with FWD (front-wheel-drive)) and although the V6 delivered the desired power, the compromises inherent in the 90o layout meant the ultimate smoothness and refinement expected in such cars was never quite achieved.  Still, it was in so many ways unique that many were prepared to overlook the odd foible and the press response generally was enthusiastic, as was that of the public with sales in the first two seasons approaching expectations.  However, the reputation for unreliability and costly repairs quickly quelled demand and the unfortunate “external circumstances” of 1973-1974 ensured the project would be terminated earlier than planned with fewer than 13,000 having been built.  Had the SM been the company’s only disastrous venture in the troubled 1970s, Citroën may have been able to avoid bankruptcy but the mistakes had been many and in 1974 administrators were called in, the company sold to the more stable Peugeot (with a still murky involvement by the French state).

1971 Citroën SM "Breadvan".

Between 1970 and 1975, the factory produced the SM only as a LHD (left-hand drive), two-door coupé but coach-builders saw the possibilities with four-door sedans and two-door cabriolets being constructed along with some even more exotic creations but all were very expensive and production of none of these variants reached double figures.  Most exclusive however were the two SM Présidentielles, four-door cabriolets built for le président’s parades during state occasions, the pair not retired from the Élysée Palace’s fleet until 2009.  Unusually among state limousines built since the 1940s, the Présidentielles used the SM’s five-speed manual transmission, first gear being a “crawler”, enabling the cars to percolate slowly along.  Improbable as the SM may have seemed as a rally car, the factory did enter a number of them in such events and for a couple of seasons there was some success, demonstrating also the strength of the novel “plastic wheels” (the Michelin RR (roues resin (resin wheel)) properly described as “constructed of synthetic resin reinforced with long-strand carbon fibre”) but the most eye-catching were a handful of SWB versions, some of which (it may have been as many as four) used the “breadvan” style kammback, a la the earlier Ferrari.  This further improved the aerodynamics which, combined with lower weight and engines tuned for additional power, delivered a reputed top speed of 285 km/h (177 mph, with rally-car gearing!), some 60 km/h (35 mph) more than the fastest of the production models.  It thus joined the short list of "unlikely rally cars" but it was effective and more might have been achieve had the company's financial problems not curtailed the venture.  More practically, the rear compartment allowed an additional two spare tyres to be carried, a useful asset in long-distant events conducted over rough roads.

Friday, September 27, 2024

Kammback

Kammback (pronounced cam-bak)

A motif in automotive styling (originally dictated by wind tunnel findings during research into aerodynamic properties) in which rear of the car slopes downwards before being abruptly cut off to terminate in a vertical or near-vertical surface.  The things are known also as the Kamm tail (K-tail).

1950s (the actual design first appearing in 1938): The construct was Kamm + back.  The surname Kamm (related to Kamp) was of Germanic or Jewish (Ashkenazic) origin and translates literally from the German as “comb”.  The German comb was from the Middle High German kamb, kambe, kam & kamme and the Yiddish kam (comb).  Genealogists conclude Kamm was probably an metonymic occupational surname for someone who either made or sold combs, a common tool used for grooming or for textile work such as carding or combing wool.  There’s also the possibility the name of some Kamm clans could have been of topographic origin because in German, Kamm can also mean “ridge” or “crest” of a hill, mountain or some other elevation; it could thus have referred to someone who lived near such a geographical feature.  Less likely is that some arose from nicknames based on physical features or personal characteristics with Kamm used to describe someone with hair resembling a comb or someone with a sharp or distinctive personality.  The surname emerged in the Middle Ages, a time when hereditary family names were becoming more common in German-speaking regions and in addition to the presence in Germany, exists at various scale in areas with a historic patter of German migration (notably the north-eastern US and South Australia.

Back was from the Middle English bak, from the Old English bæc, from the Proto-West Germanic bak, from the Proto-Germanic bakam & baką which may be related to the primitive Indo-European beg- (to bend).  In other European languages there was also the Middle Low German bak (back), from the Old Saxon bak, the West Frisian bekling (chair back), the Old High German bah and the Swedish and Norwegian bak; there are no documented connections outside the Germanic and in other modern Germanic languages the cognates mostly have been ousted in this sense by words akin to Modern English ridge such as Danish ryg and the German Rücken.  At one time, many Indo-European languages may have distinguished the horizontal back of an animal or geographic formation such as a mountain range from the upright back of a human while in some cases a modern word for "back" may come from a word related to “spine” such as the Italian schiena or Russian spina or “shoulder”, the examples including the Spanish espalda & Polish plecy.

Tail was from the Middle English tail, tayl & teil (hindmost part of an animal), from the Old English tægl & tægel (tail), from the Proto-Germanic taglaz & taglą (hair, fibre; hair of a tail) (source also of the Old High German zagal, the German Zagel (tail), the dialectal German Zagel (penis), the Old Norse tagl (horse's tail) and the Gothic tagl (hair), from the primitive Indo-European doklos, from a suffixed form of the roots dok & dek- (something long and thin (referring to such things as fringe, lock of hair, horsetail & to tear, fray, shred)), source also of the Old Irish dual (lock of hair) and the Sanskrit dasah (fringe, wick).  It was cognate with the Scots tail (tail), the Dutch teil (tail, haulm, blade), the Low German Tagel (twisted scourge, whip of thongs and ropes; end of a rope), the dialectal Danish tavl (hair of the tail), the Swedish tagel (hair of the tail, horsehair), the Norwegian tagl (tail), the Icelandic tagl (tail, horsetail, ponytail), and the Gothic tagl (hair). In some senses, development appears to have been by a generalization of the usual opposition between head and tail.  The Oxford English Dictionary (OED) suggest the primary sense, at least among the Germanic tongues, seems to have been "hairy tail," or just "tuft of hair," but already in Old English the word was applied to the hairless "tails" of worms, bees etc.  The alternative suggestion is that the notion common to all is that of the "long, slender shape."  It served as an adjective from the 1670s.  A long obsolete Old English word for tail was steort.  Kammback is a noun; the noun plural is kammbacks.  No lexicographer seems to have listed Kammbackesque, Kammbacklike or Kammbackish as standard adjectives but, given the extent of the deviances from Professor Kamm's original which are still labelled as “Kammbacks”, they might be useful forms.  Who wouldn't want to be able to use terms like the comparative “more Kammbackish” and the superlative “most Kammbackish”?

Some notable Kammbacks

The Kammback (also known as the Kamm tail) was named after German engineer & aerodynamicist Professor Wunibald Kamm (1893–1966) who during the 1930s pioneered the shape, his work assisted greatly by some chicanery within the Nazi military-industrial complex which enabled the FKFA (Forschungsinstituts für Kraftfahrwesen und Fahrzeugmotoren Stuttgart (Research Institute of Automotive Engineering and Vehicle Engines Stuttgart) institute he established in 1930s to secure funding to construct a full-sized wind tunnel equipped with a two-part steel treadmill in the floor and an 8.8 metre (350 inch) diameter axial fan, able to drive air at up to 400 km/h (250 mph).  What the two concentric floor turntables allowed was that as well as enabling turbulence to be studied from the side on the running steel belt, slip angles were also possible.   At the time, it was the most modern structure of its kind on the planet, the very existence of which was owed to the priority afforded by the Nazis to re-armament, especially the development of modern airframes, most of the money eventually coming from the Reichs-Luftfahrt-Ministerium (RLM, the State Air Ministry).

A classic Kammback on a 1970 Fiat 850 Coupé (1965-1973), one of the last of the generation of post-war mainstream rear-engined cars built in Western Europe.

While Professor’s Kamm’s work on automobile shapes continued, increasingly the facility became focused on military contracts, contributing to an extraordinary range of novel aircraft designs, some revolutionary and most of which would never reach production.  All of this ceased in July 1944 when the facility was severely damaged in air-raids by Royal Air Force (RAF) Bomber Command, a costly campaign in which one mission incurred a loss-ration of 20% and it wasn’t until the late 1940s that reconstruction began after it was acquired by Daimler-Benz AG which enlarged and modernized the machinery, the early fruits including the 300 SL (the W194, first gullwing coupé) which won the 1952 Le Mans 24 hour race and the W196R “streamliner” Grand Prix race cars which created such a sensation in 1954.  Although he wasn’t part of “Operation Paperclip” (the US project which secured (by various means including the military “smuggling” them into the country despite many being wanted by those investigating war crimes and crimes against humanity) Professor Kann was acknowledged as one of the world’s leading authorities on turbulence and between 1947-1953 was part of the team working at Wright-Patterson Air Force Base in Dayton, Ohio.  Some of what was undertaken then remains classified but it can be assumed it was all related to military projects and what would later become the space program.

The Kammback which really wasn't: 1976 Chevrolet Vega Kammback.

One often misunderstood aspect of the Kamm tail is that the aerodynamic benefits are realized only if the flat, vertical surface created was no more than about 50% of the total area of the vehicle (as viewed directly from the back).  That’s why even designs which don’t conform to the requirements are often casually referred to as “Kammbacks” and in the US, Chevrolet were cynically opportunistic when the Vega range (1970-1977) included what was nothing more than a two-door station wagon (estate), it was named “Vega Kammback”.  Actually, even the existence of the thing in the US was unusual because at that stage, General Motors (GM) really “didn’t like” small station wagons but many critics did agree the Kammback was the best looking of the Vega’s body-styles.

2023 Ford Mustang coupe (left) and convertible (right).  Three of the Mean Girls (2004) ensemble (Karen Smith (Amanda Seyfried (b 1985)), Gretchen Wieners (Lacey Chabert (b 1982)) & Cady Heron (Lindsay Lohan (b 1986)) in 2023 filmed a commercial for Pepsi Corporation, one of the props a 2023 Ford Mustang convertible.  So ubiquitous has the Kammback become that its now unnoticed (except in its absence), one quirk being that when convertibles are created from such a base, many of the aerodynamic advantages are lost, one reason why (all else being equal which is rarely the case) a convertible will tend to have slightly inferior performance and slightly higher fuel consumption.

The knowledge gained from aero-engine development during World War I (1914-1918) meant even the mainstream engines of the 1920s were developing much more power so the speeds of cars were rising.  Some intrepid types also took advantage of the number of huge, powerful aero-engines being sold cheaply as “war surplus”, installing them is powerboats and racing cars, resulting in some fast machines and not a few fatalities.  However, it became clear the law of diminishing returns applied as speeds rose because while an increase of 100 horsepower might make possible an increase in top speed from 100 to 120 mph, another 100 hp might yield only another 10 mph; wind resistance increasing too much for the power to overcome.  Thus the interest in aerodynamics, then usually called “streamlining” something which, coincidently, produced some memorable art deco designs buy the engineers were interested in higher speeds and lower fuel consumption for a given quantum of energy input (fuel consumption).

2014 Shelby American Cobra 427 50th Anniversary Edition in aluminium (left) and 1964 Shelby Daytona Coupe (right).

The AC Shelby Cobra (1962-1967) was small, light and powerful which made it an instant success on the race tracks but, ruggedly handsome though it was, its aerodynamics limited the top speed and on the some fast, open European circuits it gave away as much as 50 km/h (30 mph) to less powerful but more streamlined machines.  More power wasn’t the solution but a new Kammback body was and the Daytona duly won its class in the 1965 World Sports Car Championship.  All used the 289 cubic in (4.7 litre) Ford Windsor V8 although one briefly was fitted with a 390 (6.5) FE V8 and the planned 427 (7.0) version (CSX3027, the so-called “Daytona Super Coupe”) was never completed until sold by Shelby some 17 years later in a “rummage sale”.  The Kammback Daytona was the work of US designer Pete Brock (b 1936) and in a macabre coincidence, his namesake, the Australian racing driver Peter Brock (1945–2006) was killed while competing (in retirement) in a replica Daytona Coupe during the now defunct Targa West (2005-2021) in Western Australia.

Before the Kammback, the state of the aerodynamic art was the airship-like "streamliner" which, although it probably didn't cross the engineers' minds, owed something to the train of a bride's gown.  1939 Lincoln Zephyr V12 Coupe (left) and 1937 Mercedes-Benz 540K (W29) Special Roadster (originally delivered to Mohammad Zahir Shah (1914–2007; the last King of Afghanistan 1933-1973) (right).

What soon became clear was that the shape of the dirigible (better known as the “airship” or “blimp”) was close to ideal and needed to be tweaked only by honing it into a “teardrop shape” with a rounded nose, extending to a long, tapered tail, a shape which in the 1930s caught the imagination of designers who rendered some memorable designs although the most famous were impractical and inefficient in terms of packaging, thus suitable only for the then small market niche which sought speed.  It was to try to gain the benefits of streamlining in a shape more suitable for mass production that Professor Kamm and others took their slide-rules to the wind tunnel began to experiment.  The solution which emerged was to terminate the lovely, long flowing roofline with an abrupt end at a surface which was either vertical or close to it, an unexpected benefit being an improvement in high-speed stability, obviating the need for (a usually central) stabilizing fin (a la an aircraft’s tail).  By 1938, BMW had produced a car with a Kammback and although World War II (1938-1945) interrupted development by the late 1940s the shape had begun to appear in showrooms and in little more than ten years it was common in specially bodied racing cars.  That didn’t mean the allure of the teardrop went away because the aerodynamicists (who now had both access to bigger wind tunnels in which higher speeds could be tested and the novelty of computers which could process previously unimaginable quantities of data) could still prove ultimate slipperiness could be attained only with the teardrop.

Pre-Kammback & non-Kammback.  Porsche 917LH (Langheck (long tail)) at Arnage, Le Mans 24 hour, 1969 (left) and 2020 McLaren Speedtail (right).  Such things are now possible.

It was this which convinced Porsche to use such a tail on their revolutionary 917 in 1969 and having encountered no stability issues on their test track, sent the car to the circuits where it proved as fast as expected.  Unfortunately, the size of the Porsche test facility limited the 917 to 290 km/h (180 mph) and when on the long straights of some European circuits when speeds exceeded 320 km/h, it was clear the thing was lethally unstable.  Although the drivers killed at the wheel of the early 917s didn’t die at such velocities, it was understood it would be only a matter of time so the rear bodywork was redesigned.  When in 2018 McLaren returned to the teardrop for the “Speedtail” (a car which sacrificed just about anything not mandated by law in the quest for top speed), it was able to achieve a safe (it’s a relative term) 400 km/h (250 mph) because advances in aerodynamics, computing, materials & hydraulics had made such things possible although the packaging inefficiencies remained, something not significant for the target market.

Wednesday, July 17, 2024

Cloisonné

Cloisonné (pronounced kloi-zuh-ney or klwa-zaw-ney (French))

(1) A decorative technique for metalwork, especially brass, whereby colored enamel is baked between raised ridges of the metal; among those for whom "price-taggery" is the measure of things, it was sometimes disparaged as a cheaper alternative to jeweled encrustation or filigree.

(2) Pertaining to, forming, or resembling cloisonné or the pattern of cloisonné.

(3) As applied to metalwork, objects decorated by this technique collectively.

1863: From the French cloisonné (divided into compartments, partitioned (especially in reference to surface decoration)), from the twelfth century Old French cloison (partition), from cloisonner (enclosure; to divide into compartments) from the Provençal clausiō, from the Vulgar Latin clausiōn, stem of clausiō (closed), noun of action from past participle stem of claudere (to close; shut).  The alternative spelling cloisonne is now more common in English.  Cloisonné is a noun; the noun plural is cloisonnés.  The noun cloisonnism describes a school of postimpressionist painting and the verb cloisonner (to partition, to compartmentalize) is French.

Lindsay Lohan wearing vintage art deco bracelet in triangulated black & white, May 2007.

There were several steps in the cloisonné enamel process and they have been little changed since the process was first used in Egypt prior to 1800 BC when gold ornaments were inlaid with small pieces of turquoise, lapis lazuli, carnelian and garnet, the inlays held in position by ribs soldered to the gold base.  Although there’s no surviving evidence in archaeological digs, the speculation of Egyptologists is that goldsmiths and glass workers collaborated to forge or fabricate their creations using artificial gems.  Pieces of colored glass were substituted for the stones and some appear to have been cemented in place.  The modern sequence is usually:

(1) Design and Preparation: The artisan will create a two dimensional sketch which develops into a detailed design; this can be on paper or a digital rendering which is then transferred onto a metal object, made usually of bronze, copper or gold.

(2) Wire Application (Cloisons): Thin metal wires (usually of copper or gold) are shaped to suit the design; these are soldered or glued to the metal surface, forming compartments (cloisons).  It’s these wires which lend a three dimensional form to the design, acting as the barriers which will contain the various enamel colors.

(3) Enamel Filling: Enamel (powdered glass which is mixed with water to form a paste) is applied within the cloison compartments.  While there are designs which used only the one shade of enamel, historically the style is associated with contrasting colors, some vivid, some dark.

(4) Firing: Once the compartments have been filled, the object is fired in a high-temperature kiln.  This causes the enamel to melt, fusing it with the metal; depending on the design, multiple firings may be required to build up the enamel layers and achieve the desired thickness and finish.

(5) Polishing: After the final firing, the surface of the object is polished, this both smoothing the enamel to its final shape and enhancing the color.  As part of this process, some enamel may be removed so the metal wires are granted greater prominence better to define the shapes.

French Second Empire gilt cloisonné enamel carriage clock, circa 1870.

The intricate metalwork and detailed cloisonné engravings associated with the clocks of the First French Empire have always attracted collectors and there’s a view in the industry they’re superior in just about every way to those of the Second Empire.  They certainly tend to be more expensive.  There are those who prefer the later clocks, especially the more restrained.  For the discerning, a sub-genre of Second Empire horology was the carriage (or travelling) clock, small, sturdy and created in shapes suitable to packing in regular-sized boxes.  The earliest were purely functional with little embellishment but their diminutive form appealed to designers seeking to create exquisite miniatures.  From the mid-century on, an increasing number were produced for household use and it’s doubtful many were much used by those on the move.

The cloisonné "N.A.R.T." badge.

The Ferrari 275 GTB/4 NART Spider was a roadster commissioned by Ferrari's North American concessionaire, Italian-born Luigi Chinetti (1901–1994) who ran the N.A.R.T, (North American Racing Team) and wanted to offer something in the spirit of the charismatic 250 California Spiders (1957-1963).  Built by Ferrari's coachbuilder Scaglietti, the N.A.R.T. Spider was certainly a worthy successor but, being very much a traditional sports car with few of the luxury fittings to which buyers had quickly become accustomed, demand was subdued, most preferring its less raucous companion, the 330 GTS which pampered occupants with niceties like power steering, electric windows and air conditioning.  The NART's high price didn't help and of the planned run of 25, only ten were built.  Thus mostly unwanted when new, as a used car the performance of the 275 NART has been stellar, chassis #10709 selling at auction in 2013 for US$27.5 million.  Informally always known as the "NART Spider" despite the factory not using the designation, the only hint of its unusual gestation was a cloisonné badge with the N.A.R.T.'s logo, installed on the Kammback tail.


1967 Ferrari 275 GTB/4 NART Spider.

The NART's existence also created a footnote in the history of Ferrari nomenclature.  Although the ten made have always been regarded as official factory models, Enzo Ferrari (1898-1988) was noticeably restrained in his enthusiasm for the venture and instead of being named 275 GTS/4 as would have been the current practice, it was listed in the records of both Scaglietti and the factory as the 275 GTB/4 NART spider.  That may have been because there had already been a 275 GTS (1964-1966) although it had been replaced by the 330 GTS by the time the NART cars were built or it may simply have been Il Commendatore didn't like his plans being changed.  Because of the high prices the things attract when from time to time they are offered at auction, the sales are always well publicized and the modern practice seems sometimes to label them as "NART 275 GTB/4S", "NART 275 GTB/4s" or "NART 275 GTB/4*S".  Given the well-known history and status of the NARTs, the appended "S" seems superfluous however written.  Being are rare, pre-modern Ferrari, there is of course a pecking order of desirability among the ten and the ones most lusted for are the two built with aluminium coachwork, one of which came second in class (with two female drivers, (Denise McCluggage (1927–2015) & Marianne "Pinkie" Rollo (b 1933)) in the 1967 Sebring 12 Hours.  That machine had originally been finished in Giallo Solare (Sun Yellow) but was repainted in burgundy when used in the film The Thomas Crown Affair (1968) because the darker shade worked better for the cinematographer.