Wankel

Wankel (pronounced wahng-kuh)

A type of rotary internal combustion engine, first produced 1961, named after its inventor, German engineer, Felix (aka Fritz) Wankel (1902-1988).

The Wankel engine is a type of internal combustion rotary engine, one of many based on the a rotary principle, the Wankel using an eccentric drive to convert pressure into rotating motion.  The design was conceived by German engineer Felix Wankel, an eccentric, though clearly gifted, self-taught engineer who was an early convert to National-Socialism (linked with a right-wing political movement in 1921) who joined the NSDAP (the National Socialist German Workers Party which would become the Nazi Party) the following year.  It’s important not to make too much of that, the party in its early days an aggregation of factions which were, literally more nationalist and socialist in character than anything like the racist and ultimately genocidal thing into which the Nazis evolved under Adolf Hitler (1889-1945; Führer (leader) and German head of government 1933-1945 & head of state 1934-1945). 

But an enthusiastic Nazi Wankel certainly was although that didn’t protect him from falling victim to the internecine squabbles which would beset the party to the very end, expelled from the party in 1932 after feuding with his Gauleiter (the regional party boss) who, after Hitler came to power in 1933, succeeded in having Wankel jailed although, under less unpleasant conditions that those tossed into concentration camps.  Indeed, while in prison, he was able to continue working on his rotary engine, a patent for which had been granted to him in 1929.

Felix Wankel admires a shaft.

Wankel though had friends in the party, one of whom approached the Führer, stressing the importance of the amateur engineer’s contribution to German industry and that proved enough to secure his release.  He worked on a variety of projects during the 1930s, some on contract for BMW but mostly for the military including on seals, something which years later would absorb much of his energy at that of many others.  Despite his efforts for the Reich, his attempts to rejoin the party were rebuffed but his friends did gain him the honorary rank of Obersturmbannführer (Lieutenant Colonel) in the Schutzstaffel (The SS (Security Squad or Section), originally Hitler's personal security detail which evolved into a vast party security apparatus and later a parallel army almost a million strong) although his career in the "black mist" wasn't long, Wankel expelled within two years.  The records were lost in the confusion of war so the reasons aren’t known but while it’s tempting to wonder just how ghastly one has to be to be thought too evil for the SS, given the lack of any subsequent punitive action against him, it’s likely he just lost out in another of the squabbles that were so common in the Nazi system, the structures of which actually encouraged internal conflict.

It didn’t stop the Nazi state funding his research including what he was then calling his “rotary motion engine” although progress was slow and slow for a reason, the fundamental flaw in the design not resolved until the 1950s when another engineer, less visionary but more practical, rectified the fault.  Wankel's rotating cul-de-sac was far from unique in wartime Germany, the interest of the regime in technical innovation and the gullibility of party officials drew cranks, con-men and inventors inspired and otherwise.  Among the projects which received interest and sometimes cash from the state was a “non-combustible” material called durofol (which would catch fire), a scheme to create liquid fuel from the roots of fir trees (which consumed three times as much energy as it produced), the production of alcohol from bakery fumes (apparently that one was quickly rejected), a “death ray” championed by notorious drunkard Reichsleiter Robert Ley (1890–1945; head of the German Labour Front 1933-1945), which turned out to be impossible to build or even test, a plan to turn the atmosphere into a conductive element using ionization (which at least has a theoretical basis even if impossible) and the mysterious “Gerloff miracle pistol”, the records for which were lost.  Compared to some of these, Wankel’s engine (which didn’t work) probably appeared quite promising.

Gleitkufenboot (skid boat).

Wankel had other projects too, one of which he would, like his engine, later revisit.  This was the Zischboot (Hiss boat), intended as a small, high-speed torpedo-boat for the navy, a kind of hydrofoil that used clusters of skis.  In the 1970s, Wankel would display a prototype (now called the Gleitkufenboot (skid boat)), powered by an impressively powerful Mercedes-Benz four rotor Wankel engine.  Wankel claimed not only was it impossible to capsize the boat but that it was unsinkable, a notable feature said to be borrowed from certain sea creatures, air-intake "nostrils" with flaps controlled by sensors to ensure no water could penetrate when driving through waves.

Wankel survived the war and suffered not greatly in the denazification process the allied occupation authorities ran to weed out the worst of the worst, his work as an engineer suggesting someone unpolitical and being expelled both from the party and the SS probably helpful in mitigation.  In that he was lucky; had the investigators dug deeper they would have discovered Nazi-era Wankel held some fairly unsavory views and had expressed them more than once.  In the new Germany, those opinions he either no longer held or kept to himself, in 1951 obtaining a position with NSU as a technical consultant.  NSU were interested in his rotary motion engine.      

1957 NSU Prinz.

NSU (the name an abbreviation of "Neckarsulm", the city in which the factory was located) began in 1873 as a knitting machine manufacturer which in 1886 branched out into the production of bicycles and so successful did this prove that by 1892, the knitting machines were abandoned, the factory converted wholly to the building of bicycles.  The first NSU motorcycles appeared in 1901 and were both popular and profitable, encouraging the company in 1905 to enter the potentially even more lucrative market for cars.  Between then and the end of World War II (1939-1945), there were ups and downs but NSU survived and, in December 1946, resumed building bicycles and motorcycles, commercial vehicle production starting in 1949.  These efforts proved successful and the company, by now a significant beneficiary of Wirtschaftswunder (the post-war German "economic miracle"), was by the mid-1950s the world’s largest maker of motorcycles and profitable enough for car production to resume in 1957.     

1958 NSU Prinz Sport.

The car was modest enough, tiny and powered by a 600 cm³ (37 cubic inch) air-cooled twin cylinder powerplant which was essentially two motorcycle engines joined by a common crankcase.  As was fashionable in small European cars of the era, the engine was at the rear, something which would prove a cul-de-sac, most manufacturers outside the Warsaw Pact soon convinced to abandon the idea.  That disenchantment actually extended to Porsche which had the 911’s replacement in production by the mid-1970s, only to find out just about every soul left on the planet who still thought rear-engined cars a fine idea were Porsche 911 buyers who insisted nothing else would do.  The customer being always right, the 911 survives to this day and that a rear-engined machine can be as well-behaved as 911s now are will be no surprise to those familiar with modern electronics but Porsche, remarkably, had engineered a high degree of predictability into its behavior even before computers were robust and fast enough to do the job.  In 1958, NSU didn’t face the same issues of high-speed handling, the new Prinz (Prince) having but 20 bhp (15 kW).  It was wholly utilitarian but suited to the times and sold well, national success (and growing incomes) meaning within a year, the idea of a more profitable up-market version became attractive.  Although little more than an Italian-styled body atop the existing underpinnings and never a huge seller, the Prinz Sport remained in production for a decade and its lightweight and slippery shape made possible an impressive top speed of 75 mph (120 km/h).  By 1968 over twenty-thousand had been built and it was the Prinz Sport NSU used as the basis for the world’s first Wankel-engined car.

The rotary engine, light, powerful and with few moving parts had interested NSU which saw the potential for motorcycles but they also quickly identified the fundamental flaw in the design which Wankel had never resolved: both rotor and rotor housing rotated, each on different axes, creating an assembly almost impossible to keep in balance as well as necessitating an additional housing.  While Wankel proceeded along his path, publicized by NSU in 1954, another NSU engineer, Hanns Dieter Paschke (1920-1999), unbeknown to Wankel, was developing his own version (KKM 57), displayed in 1957 as the DKM 54 at the NSU Research & Development Department in Versuchsabteilung.  Before long, the concept would be refined in that the single housing became static and only the rotor rotated, Wankel’s original vision intriguing but perhaps, even now, impossible to build as a practical working device and NSU devoted some years to making their version exactly that.  In 1964, it was released to the public.

1967 NSU Spider.

In 1964, the Western world was not so laden with rules and restrictions (for good and bad) and it was possible to sell for use on the public highways what were essentially prototypes in development and that the NSU Spider certainly was.  It was also a seen by NSU as an advertisement on wheels, a showcase not only for their upcoming models but also to encourage other manufacturers to buy licenses to produce their own Wankels, an option that would be exercised by many, including Alfa Romeo, Curtiss-Wright, General Motors, Daimler-Benz, Rolls-Royce and Mazda.  For whatever reason, BMW, Felix Wankel's Nazi-era employer, declined.  Citroën, an outfit with a reputation for the quirky, were enthusiastic enough to set up with NSU a Swiss co-venture to pursue the technology.  More than most, the French would come to rue the day they ever heard Wankel’s name.

Skoda (rear) engine bays, the conventional (piston) engine (left) vs the single-rotor Wankel (right).

Although the project never progressed beyond the prototype stage, the Czech manufacturer Skoda was apparently the first to have running vehicles with a rotary engine installed (a complete engine said to have been running as early as 1961) but in 1964, the NSU Spider was the first to go on sale.  It used a single-rotor, water-cooled engine and was easily distinguishable from the Prinz Sport because it was a soft top cabriolet, apart from which it was substantially the same car with only detail differences in styling and specification except it was offered only in red or white.  One other change was definitely apparent however, power had jumped to a heady 50 bhp (37 kW) at a surprisingly low 5,500 rpm, enough to propel the Spider to close to 100 mph (160 km/h) for anyone on the autobahn prepared to push the little machine to the limit.  Never expected to be a big seller, fewer than 2500 were built between 1964-1967, its purpose more to whet the public appetite for what NSU intended to be their entry into the burgeoning middle-class mass market.  Additionally, though not at the time discussed, the Spider’s engine, while at a stage of development beyond being a prototype, was not ready for release to a public using it in a wide variety of ways in different climates in different countries.  The Spider’s customers unwittingly were also NSU’s development test team, something which later in the century would become a handy business model for many software companies.

Given the specifications of the Wankel NSU would produce in the future, it may that the Spider’s single rotor powerplant wasn’t an ideal a test bed for the customers to debug but problems in design and the choice of materials were identified and, where possible, within the limits of metallurgy and the realities of economics the lessons learned were applied.  Nor was the Spider’s specification static, the experiences of the customers applied to improve not only longevity but also power, the later cars enjoying a slight increase in capacity, output now 54 bhp (40 kW) at 6,000 rpm, 4 bhp perhaps not impressing all but it was close to 10% more and although the factory didn’t claim any increase in attainable speed, the most recent Spider owners presumably got there a little more quickly.

1967 NSU Ro 80 (1967-1977).

If the spider had generated interest, the NSU Ro 80, released in 1967, was a sensation.  Even without the novelty of the rotary engine (without which all concede it would doubtless have been a success), it would have made quite an impact.  The body, which does not look out of place even in the twenty-first century, was a modernist masterpiece, trendsetting in a way the 1955 Citroën DS (often called the déesse (literally "goddess")) was just too extreme to be yet more aerodynamically efficient, the Ro 80’s drag coefficient (CD) of .354 just a fraction better than the French car’s .359.  Beneath the skin, the futurist vision continued, the efficient front-wheel-drive packaging in the vanguard of adoption by larger vehicles, four wheel disk brakes (inboard at the front), a semi-automatic transmission, power-assisted rack and pinion steering and all independent suspension.  Reviews upon release were sometimes ecstatic, the only criticism from some who found the interior austere but it was era in which only the most expensive German cars were fitted-out with much beyond the starkly functional; NSU’s designers looked to Le Corbusier and Gropius, not the Jaguar Mark X.

The Ro 80 won the 1968 European Car of the Year award and buyers seemed as impressed as the many journalists who voted NSU.  Out on the autobahns, the twin-rotor engine was a smooth, quiet and a delight to use, the slippery shape meaning the 113 bhp (85 KW) it generated from a comparatively small 995 cm³ (61 cubic inch) displacement allowed it to match the speed of cars with even three times the capacity, the turbine-like feel encouraging a disregard for the 6500 rpm redline which it seemed to exceed without complaint.  The honeymoon didn’t last.  Critics began to notice it was good to match larger six cylinder cars in performance but it came at the cost of a thirst many V8 owners didn’t suffer.  Nor was the Ro 80, so at home cruising at 100 mph (160 km/h) on the autobahn, quite as happy in the stop-start urban conditions where the modern German motorist was now spending much time, some finding the previously admired semi-automatic transmission clumsy to use, the experience jerky.  The Wankel engine didn't deliver much much low-speed torque and drivers had to adjust their technique; those used to the more effortless performance of the 2-3 litre engines most often found in this class of car found negotiating their commute through a succession of red traffic-lights harder work than before.    

Nothing is perfect and such was the appreciation of the Ro 80’s virtues these drawbacks may have been overlooked or at least endured but what couldn’t be forgiven was that the Wankel engines were frequently, numerously, rapidly and expensively failing and, being within the warranty period, it was NSU which bore the cost to repair or replace.  That was bad enough but the car was quickly gaining a reputation for unreliability and sales were falling, exacerbating the financial strain NSU was suffering from all the warranty claims.  Nor was the once profitable motorcycle business there to subsidise the four-wheel venture, production having ended in 1968 to allow the company to focus on the Ro 80.  The problems hadn’t been wholly unexpected, just underestimated; NSU’s engineers had warned the board the engine wasn’t yet ready for production and needed at least months more durability testing and development but, perhaps remembering the relatively smooth introduction of the Spider, and certainly seeking cash-flow, approval was given for a debut in 1967.

It wasn’t difficult to work out where the problems lay which was mostly in the high wear of the apex seals and consequent damage to the rotor housing.  Essentially, the seal failure destroyed the engine, necessitating a replacement and it was not uncommon for replacement engines also to fail and require replacement, again under warranty.  For a small company with limited resources, it was unsustainable and NSU was soon unviable, the takeover by Volkswagen in 1969 said to be a "merger with Audi" only an attempt to glue a veneer of corporate respectability on what was the takeover of a distressed competitor.  It was unfortunate.  In just about every way except the flawed engine, the Ro 80 was years ahead of its time and deserved to succeed.

1967 Mazda Cosmo.

The issue was the engine at that stage of its development given the metallurgy of the time rather than NSU because Mazda, which had in 1961 purchased a licence to produce the Wankel, were suffering the same problems in the Cosmo sports car, introduced also in 1967.  The Cosmo however, was a low-volume model and Mazda had other, profitable ranges on sale and so could absorb the cost of fixing failed Cosmos.  Mazda did seem to learn from the NSU experience however.  When they put the Wankel into volume production, the vehicles initially were offered either as a rotary or with a conventional piston engine, an approach which seemed promising but such was the fragility of the Wankel, even that had to be abandoned.  Mazda, after putting Wankels even into small trucks and busses, realised that for consumer vehicles, it was a niche product and restricted it to specialist sports cars.  The problems didn’t go away, but, for a while, they became manageable.

Mazda RX-7 (the Porsche 924-928 inspired second generation (1985-1992) model) in Lindsay Lohan's music video clip First (2005).

The Cosmo's spiritual replacement was the RX7, a two door coupé (there was a short run of roadsters in the second generation) built over three generations between 1978-2002.  With over 800,000 produced, it's probably still the machine most identify with the Wankel engine and was the car which came closest to gaining the mainstream acceptance which had eluded earlier models such as the RX-2 (Capella), RX-3 (Savanna) & RX-4 (Luce), probably because reliability had significantly improved and those buying relatively expensive sports cars were more tolerant of the higher fuel bill and in fairness, much of the competition offering similar performance returned fuel consumption which was little different.  It was replaced by the RX-8 which proved (thus far), the swansong for the Mazda rotary on the streets.     

1972 NSU Prinz 1200 TT.

Remarkably, Audi-NSU, although axing the outdated rear-engined Prinz range, maintained the troublesome Ro 80 in production and despite its thirst it survived even the first oil crisis which killed off so many others.  Although most of the old NSU manufacturing capacity had long been given over to the Audi production line, it wasn’t until 1977 the last Ro 80 was built, the decade’s total production of 37,000-odd a disappointment for a car expected to ship more than that every year.

Despite NSU’s takeover in 1969 in the wake of the problem, even in the early 1970s, many major manufacturers were still convinced the Wankel's many advantages would render the piston engine obsolete and embarked on large, and expensive, development programs.  In this they were encouraged by the legendary optimism and confidence of engineers who so often think any engineering problem can be solved with enough time and money.  However the problems, seal wear, emissions and high fuel consumption proved insoluble and the projects which hadn’t been abandoned didn’t survive the first oil crisis.  Apart from the odd small-volume independent, only Mazda persisted. 

Notable Wankel Moments

1974 Mazda Rotary Parkway 26 Minibus (1974-1976).

The Mazda Cosmo was shown only weeks after the NSU Spider. Twice the capacity of the NSU, it was much more ambitious and though also troubled, its low volume meant the rectification was manageable.  Only Mazda has produced Wankel engines in large quantities and they've offered the power-plant in sports cars, racing cars, sedans, coupés, station wagons, pick-up trucks & buses, the last two perhaps a curious place to put an engine not noted for its prodigious torque.  Others, with varying degrees of success, have put them in automobiles, motorcycles, racing cars, aircraft, go-karts, jet skis, snowmobiles, chain saws, and auxiliary power units.

1976 Mazda RX-5.

Even Mazda, which has at least partially solved most of the problems, currently don't have a Wankel in production; the last, used in the RX-8, unable to meet the latest EU pollution standards.  Despite this, Mazda claim to be committed to the Wankel and the factory say development is continuing, in 2016 showing the RX-Vision, hinting it could be on sale as early as 2020.  The COVID-19 pandemic put that at least on hold and concerns about CO₂ emissions may mean the Wankel's historic automotive moment, which lingered for so long, may finally have passed so whether Mazda really solved the problem of toxicity may never be known. 

1975 HJ Mazda Roadpacer (HJ & HX, 1975-1977).

Even Holden fans, as one-eyed as any, don’t have fond memories of the HJ Premier.  Usually, all they’ll say is its face-lifted replacement, the HX, was worse.  Its engines strangled by the crude plumbing used in the era to reduce emissions, driving an HX wasn’t a rewarding experience so there might have been hope Mazda’s curious decision to use the HJ (and later the HX) Premier as their top-of-the range executive car, complete with a smooth two-rotor Wankel, might have transformed the thing.  That it did but the peaky, high-revving rotary was wholly unsuited to a relatively large, heavy car.  Despite producing less power and torque than even the anemic 202 cubic inch (3.3 litre) Holden straight-six it replaced, so hard did it have to work to shift the weight that fuel consumption was worse than when Holden fitted their hardly economical 308 cubic inch (5.0 litre) V8 for the home market.  Available only in Japan and sold officially between 1975-1977, fewer than eight-hundred were built, the company able to off-load the last of the HXs only in early 1980.  The only thing to which Mazda attached its name not mentioned in their corporate history, it's the skeleton in the Mazda closet but does have one place in history, the footnote of being the only car built by General Motors (GM) ever sold with a Wankel engine.

Mercedes-Benz C-111 (1968-1970 (Wankel versions)).

Although the C-111 would have a second career in the late 1970s in a series of 5-cylinder diesel and V8 petrol engined cars used to set long-distance speed & endurance records, it's best remembered in its original incarnation as the lurid-colored ("safety-orange" according to the factory) three and four-rotor Wankel-engined gullwing coupés, sixteen of which were built.  The original was a pure test-bed and looked like a failed high-school project but the second and third versions were both finished to production-car standards with typically high-quality German workmanship.  Although from the school of functional brutalism rather than the lovely things they might have been had styling been out-sourced to the Italians, the gullwings attracted much attention and soon cheques were enclosed in letters mailed to Stuttgart asking for one.  The cheques were returned; apparently there had never been plans for production even had the Wankel venture proved a success.  The C-111 was fast, the four-rotor version said to reach over 300 km/h (190 mph), faster than any production vehicle then available.

Herr Wankel’s personal R107 (350 SL) fitted with 4 Mercedes-Benz Rotor Wankel (KE-413).

Less conspicuously than the C-111s in lurid safety orange were the roadsters which Mercedes-Benz used as Wankel test-beds.  The first used the W113 (1963-1971) platform, remembered now as the first “pagoda” and while it would never have been suitable as a production car, it apparently wasn’t as unbalanced as the sole W113 fitted with the 6.3 litre (386 cubic inch) M-100 V8 used in the big 600 Grossers and the 300 SEL 6.3 which the test drivers described as "exciting but unstable".  Still, the Wankel W113 proved quite a bit faster than the 280 SL and as a proof of concept was judged a success.  The W113 though had never been intended to use anything but a straight-six whereas the successor W107 (1971-1989) was designed from the start with an engine bay and transmission tunnel which would accommodate either a V8 or the Wankel with its high central power take-off.  The W113 had used a three rotor unit (M 50 F) but R107 had four (KE-413) and delivered considerably more power than the 3.5 litre (215 cubic inch) & 4.5 litre (275) V8s used in the production models and not until the adoption of 5.0 (305) & 5.5 (339) V8s in the 1980s would the performance be matched.

Four rotor Wankel engine (KE-413, left) and the unit installed in Herr Wankel’s 350 SL.

Yet however successful the proof of concept may have been, the early skepticism mentioned by the combustion chamber specialists was vindicated because as they pointed out the chamber was "...the central feature of the combustion engine.  The priority is to produce an optimum design so as to achieve the most favorable thermodynamic efficiency."  By that they meant "...as complete combustion of the fuel as possible” and not only was this not happening with the Wankel, their point was that fundamental aspects of the design meant it could not happen, something which manifested in high fuel consumption and difficulties in meeting the exhaust emission standards due to all the non-combusted hydrocarbons.  Modest in their demands in the early 1970s, the US regulators had already provided a decade-long roadmap which would make the rules so onerous there was then no realistic prospect the Wankel could ever be made to comply.  The engineers were confident they could produce a smooth, reliable and powerful Wankel, albeit a thirsty one, but knew they could never make it clean.  All of the factory’s W113 & R107 test-beds were scrapped when the project was cancelled but Felix Wankel’s personal R107 SL survives.  He obtained a four rotor unit from Mercedes-Benz, had it installed by technicians at his institute and in 1979, the trade journal Auto Motor und Sport published their road-test of the unique machine, reporting a 0-200 km/h (120 mph) time of 25.9 seconds and a top speed of 242 km/h (150 mph).

Citroën GS (GX) Birotor (1973-1975), Frankfurt Motor Show, August 1973.

Sometimes one gets lucky, sometimes not.  In the US, Ford introduced the new, small and economical Mustang II a few weeks before the first oil shock in 1973 and had a big hit (something sometimes forgotten by those who so decry the Mustang II and condemn it a failure).  In Australia, about the same time, Leyland announced the big new P76, a selling point its V8 engine.  The P76 wasn’t without faults and may anyway have failed but the timing didn’t help and it didn’t last long, shortly taking with it whatever remained of Leyland Australia.  In France, in October 1973, the very month in which events in the Middle East triggered the first oil shock, Citroën's thirsty GS Birotor went on sale.  Shown at the Frankfurt Motor Show in August, the reception had been generally positive, most complaints being about the aesthetic; all the Birotors appeared to be painted in shades of brown, a color which seemed to stalk the 1970s.

Mechanically though, even before going on sale, some with high hopes for the Wankel were disappointed, the Birotor not realising the promise of smaller, lighter packages.  Despite the compact size, the engine would fit in the GS’s engine bay only transversely so Citroën’s signature inboard disk brakes couldn't be used for the first time since the pre-war Traction Avant. That necessitated a different subframe, a wider track, and bigger wheel arches than the standard GS.  Combined with other detail differences, it bulked the rotary-powered GS up to 690 lb (290 kg) more than the standard GS, compelling the addition of anti-roll bars to reduce the increased propensity towards body roll.  Another mechanical aspect not much discussed at the time was the Wankel's high exhaust emissions.  In one of many possible illustrations of how the politics of the matter has changed, it was a time when the exhaust pollution rules imposed by the United States appalled Europeans because of the way they made the detoxed cars behave.  Not wishing to sacrifice power, in Europe, drivers for years enjoyed un-emasculated engines and accepted the higher emission of CO₂ and other pollutants as part of life.  Widespread interest in climate change, then the concern of a handful of specialists looking at what was called the "greenhouse effect", was a generation away.  Despite cubic money being spent, it was one aspect of the Wankel that was never fixed and was the final nail in the coffin of Mazda's RX8.    

Known also as the GZ, the Birotor replaced the noisy but robust and economical air-cooled flat four used in the GS on which it was based and cost about 70% more.  The Wankel engine was the first fruit of the NSU-Citroën joint venture and, being of small capacity, attracted lower taxes than a similar piston-engined car.  However, it suffered the problems endemic to the Wankel: ruinously high fuel consumption and chronic unreliability caused by wear of the rotor seals and the damage this caused to the housing walls.  Citroën had looked at the Ro 80's issues and had included an additional oil pump to improve seal lubrication but the problems persisted.  Internal documents later revealed that just as at NSU half a decade earlier, there were those within Citroën who understood, long before the release, that a disaster was impending but a combination of corporate inertia, an unwillingness to admit failure and a number of contractual obligations meant the Birotor went on sale.  Within months the extent of the problem was realized.  Although only a few hundred had found buyers, broken ones were being towed to dealers around the country and owners were irate.  Early in 1975, Citroën dropped the model, offering to buy back all the 847 made, running or not, customers given a full-refund.  Most agreed and Citroen scrapped every one they could, hoping everyone would forget they ever existed.  A remarkable third of owners declined the offer and many survived in private hands; among Citroën aficionados they’re a collector’s item though probably more displayed as a curiosity than driven.

A twelve-rotor motor intended for marine applications.

The low weight, compact profile, small number of moving parts and very high specific output of the Wankel has always attracted engineers.  The Wankel turned out to be well suited to applications where it could be maintained at a constant speed for long periods, the problem of unburnt fuel in the exhaust substantially resolved, improving emissions and fuel consumption.  Wankels lose efficiency dramatically when they are revved up and down as they are in the normal use of a passenger car but in boats and aircraft where engine speed tends to be constant for long periods, they can work well.  In airframes especially, where weight is so critical, the inherent advantage of the vastly superior power to weight ratio can be compelling.

1989 Norton 588.

One of the many companies to purchase a licence from NSU was English motorcycle manufacturer BSA (British Small Arms) and this became the property of Norton when it absorbed BSA in 1973.  Norton’s troubled history in the 1970s had little to do with the Wankel but after bankruptcy, it was revived on more than one occasion and during one of those escapades, it made almost a thousand Wankel motorcycles.  Other manufacturers dabbled with Wankels and Suzuki actually made some 6000 RE5s between 1974-1976 but the best of the breed were thought to be the Nortons, even though they were admitted to be early in the development cycle.  The Wankel was a more reliable thing by the time the Nortons were made but they suffered the underlying problem of all road-going applications: the advantages just weren’t enough to outweigh the drawbacks, added to which, piston engines continued to improve.  Norton allowed the project to die but did use the Wankel technology to develop a line of UAV (unmanned aerial vehicles, sometimes called drones) engines that proved successful; weighing only 22 lb (8.2 KG) yet producing 38 bhp (28 kw) they proved ideal for the task.

1972 Chevrolet Corvette XP-895 Prototype.

In 1972, spooked a bit by the news Ford would be offering the mid-engined De Tomaso Pantera through Lincoln-Mercury dealers, to steal a bit of the thunder, Chevrolet dusted-off and displayed a mid-engined Corvette prototype, production of which had been cancelled because of the cost.  It was shown again in 1973, this time with a four-rotor version of the Wankel GM had been developing in a number of configurations.  After the Wankel project was aborted, there were plans to use the body with a V8 to replace the existing Corvette, a release penciled in for 1980 but again, costs and concerns about sales potential aborted the idea.  It meant the already long-serving Corvette stayed in the line for fifteen years, not replaced until 1983 and not until well into the next century was a mid-engined version released.

Cruise

Cruise (pronounced krooz)

(1) To sail about on a pleasure trip (often as cruising).

(2) To sail about, as a warship patrolling a body of water.

(3) To travel about without a particular purpose or destination.

(4) To fly, drive, or sail at a constant speed that permits maximum operating efficiency for sustained travel.

(5) In aeronautics, the portion of aircraft travel at a constant airspeed and altitude between ascent and descent phases.

(6) To travel at a moderately fast, easily controllable speed.

(7) To travel about slowly, looking for customers or for something demanding attention.

(8) As cruise missile, an intermediate-range weapon.

(9) Among male homosexuals, actively to seek a casual sexual partner by moving about a particular area known to be frequented by those there for such purposes, an area known to be productive known as “cruisy” (“to troll” & “trolling” were once used as a synonyms but those terms have now been claimed by their use on the internet).

(10) In informal use in the US military, a period spent in the Marine Corps.

(11) In casual use in sporting competition, easily to win.

1645-1655:  From the Dutch kruisen (to cross, sail to and fro), from kruis or cruis (cross), from the Middle Dutch cruce, from the Latin crux.  Root was the primitive Indo-European sker (to turn, to bend); etymologists suggest it may be cognate with the Latin circus (circle) and curvus (curve).  In English, it began to be used as a noun in 1706 in the sense of “a voyage taken in courses” and by 1906 as “a voyage taken by tourists on a ship".  It was related to the French croiser (to cross, cruise), the Spanish cruzar and the German kreuzen.  The alternative spelling cruize is obsolete.  Cruise & cruising are nouns & verbs, cruised is a verb, cruiser is a noun and cruisy is an adjective; the noun plural is cruises.

Cruiser in the sense of "one who or that which cruises"(agent noun from the verb cruise) is from the 1670s, probably, borrowed from similar words in continental languages (such as the Dutch cruiser & French croiseur).  In older use, a cruiser was a warship built to patrol and protect commerce of the state to which it belongs and to chase hostile ships; cruisers were the classic gun boats used by the European colonial powers for patrolling their empires.  In this use they were often compared to the frigates of old in that they possessed good speed and were employed to protect the trade-routes, to glean intelligence, and to act as the “eyes of the fleet” and in casual use, during the eighteenth century, the term was often applied to the ships of privateers (pirates).  Cruiser was used to describe homosexuals “cruising for sex partners" (ie frequenting and lingering in places well-known for such things) from 1903, as a boxing weight (cruiserweight) class, from 1920.  The meaning "police patrol car" is a 1929 adoption of American English.

Royal Navy battlecruiser HMS Hood entering Valletta harbor, Malta 1937.

In admiralty use, cruisers are now the largest of the conventional warships still in service.  Navies used to use the term “cruiser” more as a description of the tasks for which the ships were used rather than specific nature of the construction, the early cruisers those ships which were used for long-range missions such as costal raiding or scouting and it was only in the late nineteenth century as the fleets grew and became more specialized that the classic model of the corvette / frigate / destroyer / cruiser / battleship evolved.  Even then there were distinctions such as light & heavy cruisers but the most interesting development in warship architecture was the battlecruiser, built essentially because the Dreadnought had created “a gap in the market”.  Battlecruisers were battleships with less armor, therefore gaining speed at the cost of greater vulnerability.  The theory was they would have the firepower to out-gun all but the battleships and those they could out-run with their greater speed.  The concept seemed sound and in December 1914, at the Battle of the Falkland Islands, two Royal Navy battlecruisers vindicated the theory when they chased and destroyed the German East Asia Squadron. However, in 1916, the performance of the battlecruisers in the Jutland engagement forced the Admiralty to re-consider.  Jutland was the closest thing to the great battle of the fleets which had been anticipated for decades but proved anti-climatic, both sides ultimately choosing to avoid the decisive encounter which offered the chance of victory or defeat.  What it did prove was that the naval theorists had been right; the battlecruiser could not fight the battleship and if their paths threatened to cross, the less-armored vessel should retreat and rely on greater speed to make good her escape.  There were technical deficiencies in the British ships, without which perhaps three of their battlecruisers wouldn’t have been lost, but what happened at Jutland made it clear to the admirals that uneven contests between the big capital ships were to be avoided.  The consequence was that the battlecruiser became unfashionable and after the round of disarmament in the 1920s, none were built until, unexpectedly, the Soviet Navy commissioned four in the 1980s.  They proved the last of the breed.

Origin of cruise missiles

US Pershing II cruise missiles in Neu-Ulm military base, Swabia, Bavaria in the then Federal Republic of Germany (The FRG, the old West Germany), 1984.

Carrying large warheads long distances, cruise missiles are guided weapons, used against ground targets; they fly at both subsonic and supersonic speed, remain in the atmosphere and, self-propelled for the most of their flight, travel for mostly at a constant speed.  In this they differ from ballistic missiles which fly in an arc, often reaching suborbital flight with a final trajectory much like a bullet because, once the fuel is expended, the path from that point is determined by the speed and direction of launch and the force of gravity pulling towards Earth.  Both cruise and ballistic missiles can carry nuclear warheads but cruise missiles are most often equipped with conventional warheads.  Theorists and researchers were exploring the possibility of military missiles as early as 1908, described then as the aerial torpedo, envisaged as remote-controlled weapons with which to shoot-down airships bombing London, perceived then as the most credible airborne delivery system.  .  Between the first and second world wars, the major powers all devoted resources to research but few projects reached even the prototype stage.

Annotated schematic of the V-1 (left) and a British Military Intelligence drawing (dated 16 June 1944, 3 days after the first V-1 attacks on London (right). 

First deployed in 1944 the German Vergeltungswaffen eins (“retaliatory weapon 1” or "reprisal weapon 1” and eventually known as the V-1) was the world’s first cruise missile.  One of the rare machines to use a pulse-jet, it emitted such a distinctive sound that those at whom it was aimed nicknamed it the “buzz-bomb” although it attracted other names including “flying bomb” and “doodlebug”.  In Germany, before Dr Joseph Goebbels (1897–1945; Reich Minister of Propaganda 1933-1945) decided it was the V-1, the official military code name was Fi 103 (The Fi stood for Fieseler, the original builder of the airframe and most famous for their classic Storch (Stork), short take-off & landing (STOL) aircraft) but there were also the code-names Maikäfer (maybug) & Kirschkern (cherry stone).  While the Allied defenses against the V-1 did improve over time, it was only the destruction of the launch sites and the occupation of territory within launch range that ceased the attacks.  Until then, the V-1 remained a highly effective terror weapon but, like the V-2 and so much of the German armaments effort, bureaucratic empire-building and political intrigue compromised the efficiency of the project.

Lindsay Lohan on a cruise in the Maldives, January 2019.

The V-1 used a gyroscope guidance system and was fitted with an unusual triple-layer fuse system, the primary device and a backup augmented by a fail-safe designed to ensure destruction of “duds” (weapons which fail to detonate) so they couldn’t be examined.  The accuracy of the thing was sufficient only for use against very large targets (such as the general area of a city which made sprawling London ideal) while the range of 250 km (155 miles) was significantly less than that of a medium bomber carrying the same payload. The main advantages were speed (although not sufficient to outrun the fastest of the low-altitude propeller-driven interceptors), expendability and economy of operation.  Indeed, it was probably the war’s outstanding delivery system in terms of cost per ton of explosive, able to carry a warhead of 850 kg (1,870 lb) to London at a tiny fraction of the cost of using manned aircraft for the same task with the priceless additional benefit of not risking the loss of aircrew.  The production cost of a V-1 was also only a small fraction of that of the supersonic V-2 ballistic missile which carried a warhead only of a similar-size although once launched, it was effectively invulnerable.  Unlike the V-2, the initial deployments of the V-1 required large, fixed launch ramps which were relatively easy to detect and susceptible to bombardment.  Later experiments produced much smaller launch facilities which provided for a greater rate of sustained fire.  Bomber-launched variants of the V-1 saw limited operational service near the end of the war, with the pioneering V-1's design reverse-engineered by the Americans as the Republic-Ford JB-2 cruise missile.

Luftwaffe Mistel Aircraft ( Focke-Wulf Fw 190 (upper) & Junkers Ju 88 (lower), Merseburg, Germany, 1945.

The "cruise missile" project which was the best example of the improvisation which characterized much of the ad-hoc weapon development of war time was the Mistel (mistletoe) or Beethoven-Gerät (Beethoven Device) composite aircraft program which the Germans developed in 1943.  It was a rudimentary air-launched cruise missile, made by a piloted fighter aircraft being mounted atop an unpiloted bomber-sized aircraft, packed with explosives and the larger aircraft would be released to glide towards the target.  Calling it the mistletoe reveals a sense of humor mot usually associated with the Luftwaffe but it was known rather more evocatively as the Vati und Sohn (Daddy and Son) or the Huckepack (Piggyback).  Although built in the hundreds, by the time it was available for deployment, the scope for attacking large targets with manned aircraft had reduced and the need was for precision delivery, something for which the Mistel was ill-suited and success was limited.

Thoroughbred

Thoroughbred (pronounced thur-oh-bred, thur-uh-bred, thuhr-uh-bred)

(1) Of pure or unmixed breed, stock, or lineage, as a horse or other animal; bred from the purest and best blood; a pedigree animal; purebred.

(2) By analogy, a person having good breeding or education.

One of a breed of horses, to which all racehorses belong, originally developed in England by crossing three Arabian stallions with European mares (always initial upper case)

(3) By analogy, a machine built to exacting standards with mostly bespoke parts rather than something assembled from parts or components from other manufacturers.

1701: The construct wass thorough +‎ bred.  Through is traced to circa 1300, from Middle English thoruȝ & þoruȝ, an adjectival use of the Old English þuruh (from end to end, from side to side, a stressed variant of the adverb þurh), a byform of Old English þurh, from which English gained through.  The word developed a syllabic form in cases where the word was fully stressed: when it was used as an adverb, adjective, or noun, and less commonly when used as a preposition.  Bred is the past tense of breed.  Breed is from the Middle English breden, from the Old English brēdan (bring (young) to birth, procreate (also "cherish, keep warm), from the West Germanic brodjan (source also of the Old High German bruoten, & German brüten (to brood, hatch)) & the Proto-Germanic brōdijaną (to brood), from brod- (fetus, hatchling), from the primitive Indo-European bhreu (warm; to boil, bubble, effervesce, burn).  It was cognate with the Scots brede & breid, the Saterland Frisian briede, the West Frisian briede, the Dutch broeden, the German Low German bröden & the German brüten.  The etymological notion is incubation, warming to hatch.  The intransitive sense "come into being" is from circa 1200; that of "beget or bear offspring" from the mid-thirteenth century.  As applied to livestock, the meaning "procure by the mating of parents and rear for use" was standardised by the mid-fourteenth century.  The sense of "grow up, be reared" (in a family; clan etc.) is from the late 1300s, extended to mean "form by education" a few decades later.  Thoroughbreed (also as thorough-breed) is a now rarely used alternative form.  Thoroughbred & thoroughbredness are nouns; the noun plural is thoroughbreds.

Among the thoroughbreds:  Lindsay Lohan visiting Flemington Racecourse for the Spring Carnival, Melbourne, Australia, November 2019.  Melbourne Cup Day (left) and Derby Day (right).

The noun breed "race, lineage, stock from the same parentage" (originally of animals) dates from the 1550s, derived from the verb but wasn’t applied to people until the 1590s; the scientific use to define a “"kind or species" began to be used in the 1580s.  The noun half-breed (person of mixed race) is attested from 1760 and was used first as an adjective in 1762; now though offensive it appears to have been replaced by “mixed-race”  but even this is not recommend for use unless being applied self-referentially.  The verb cross-breed appeared in 1670, used in relation to dogs, livestock and plants and, surprisingly, appears not to have been a noun until 1774.  Underbred (of inferior breeding, vulgar) from the 1640s was an adjective which didn’t survive; it was applied to animals "not pure bred" after 1890.

Thoroughbred the adjective dates from 1701 in the sense of persons "thoroughly accomplished" and wasn’t used for horses until the concept was created in 1796; the noun is first recorded 1842 but it’s hard to believe if wasn’t earlier in use in the horse-racing business; the noun is first recorded in 1842.  Use to refer to racehorses soon became definitive and all other applications are now analogous.

Needs a trained eye.  Thoroughbred (Indy King by Mr Prospector out of Queena) on the left, Standardbred to the right.

Sometimes casually used to refer to any purebred horse, it’s correct to use the word only with the Thoroughbred breed.  If used with a lower-case "t", it technically may be applied to just about any object when appropriate but never with other horse breeds.  It can cause confusion or worse. 

The Thoroughbred was bred in seventeenth and eighteenth-century England when several dozen native mares were crossbred with three imported Oriental stallions, Byerley Turk, Darley Arabian and Godolphin Arabian; all Thoroughbreds can trace their pedigrees to these three.  Between the 1730s and the late nineteenth-century, the breed spread throughout the world, first arriving in Australia in 1802.  Bred mainly for (gallop but not trotting or pacing) racing, they are also used for show jumping, combined training, dressage, polo, and fox hunting.  Thoroughbreds born in the Northern Hemisphere are officially considered a year older on the 1 January each year; those from the Southern Hemisphere having their birthday on 1 August.  These artificial dates enable the synchronization of northern and southern competitions for horses within their age groups.  Thoroughbreds are bred for speed, and depending on their intended career, for endurance over distances less than a mile (1600m) or as long as four (6400m).  They have a reputation for being highly-strung, sometimes deserved, sometimes not.

A horse cannot be registered as a Thoroughbred unless conceived by natural means; any form of artificial insemination is banned.  The industry maintains there are all sorts of reasons for this but it’s really a restraint of trade designed to limit supply and maintain high prices.  One charming second career for a Thoroughbred stallion which has proven too slow to race is that of a teaser.  A teaser’s job is to be placed close to a mare, usually behind a fence, to see if she’s in the mood to mate.  If she proves receptive, the teaser is led (unwillingly one supposes) away and replaced with a fast stallion.  Nature is then allowed to take its course.

The Maserati 5000 GT (Typo 103, 1959-1966)

1957 Maserati 450S.

It’s never taken much to induce advertising agencies to describe a car as a “thoroughbred”.  Some have been more convincing than others but few have been as deserving of the appellation as the Maserati 5000 GT (Typo 103).  With coachwork fabricated by eight different Italian coach-building houses, all of the thirty-four built used a slightly tamed 4.9 litre (300 cubic inch) variant of the 4.5 litre (273 cubic inch) V8 last seen in the Maserati 450S with which the factory’s racing team contested the World Sports Car Championship.  It really was end of the era stuff, a shift to unitary construction soon dooming most of the specialist coachbuilders while increasingly interventionist governments were in the throes of passing a myriad of laws which would outlaw barely disguised racing cars being used on the road.

1959 Maserati 5000 GT (Shah of Iran) by Touring.

In keeping with the pedigree of its illustrious engine, the 5000 GT enjoyed a blueblood connection in its very origin.  Before the Ayatollahs ran Iran, it was ruled by the Shah (king) and he got a lot more fun out of life than his clerical successors, noted especially as a connoisseur and of fast, exotic and expensive cars, his collection including multiple models from Lamborghini, Mercedes-Benz, Rolls-Royce, Ferrari and Maserati among others.  In 1958 he’d driven Maserati’s then popular 3500 GT but thought it lacking in power and, because hundreds a year were sold to the (rich) public, a bit common.  Accordingly, after receiving material advertising both the 3500 GT and the remaining 450S race cars the factory wished to dispose of after withdrawing from racing, the shah decided he wanted a combination of the two, the race engine in the road car.  To have it created, essentially he sent Maserati a blank cheque and asked them to call when it was ready.

1962 Maserati 5000 GT by Allemano.

It wasn’t as simple as it sounded for the 450S V8 was not some adaption from a production car but a genuine racing engine designed for use nowhere but the circuits and only in the hands of skilled racing drivers. Robust and powerful it certainly was but it was also raucous, inclined to roughness at low speeds and not all that well behaved except when at racing speed when it was more raucous still, if a little smoother.  Taming such a beast for the road was a challenge but, with the shah’s buckets of money and some Italian ingenuity, remarkably, a relatively quiet and tractable engine (compared with that of a race car) was concocted.  The bore-stroke relationship was changed, the camshaft profiles softened and the porting was altered, which, combined with a lower compression ratio, improved torque and delivered the still ferocious power over a more usable range.

1959 Maserati 5000 GT by Allemano.

Italian house Carrozzeria Touring designed one of their signature superleggera (their clever technique of lightweight construction) frames, onto which they attached a hand-made skin of aluminum to create a strikingly modernist two-seater coupé, its lines and interior appointments influenced by Persian Baroque architecture.  Delivered to the shah (Mohammad Reza Pahlavi, 1919-1980) in 1959, it was almost a secret but when a second, commissioned by a South African customer,  was displayed at the 1959 Turin Motor show, it generated such interest that Maserati were soon fielding enquiries from rich commoners wanting what royalty had.  Priced stratospherically however, there weren’t enough rich folk on the planet to make it a viable option for their production lines so it entered the catalogue as a bespoke item, Maserati modifying the 3500 chassis which, frankly had been a bit over-taxed by the big V8 and tweaking the engine still further, slightly increasing the capacity but in a way that rendered it more docile, yet still a howler when stirred.  The chassis appeared in the list and buyers could choose their own coachbuilder and eventually eight produced their own interpretations, the most numerous being by Carrozzeria Allemano which, over the years, finished twenty-two, the Allemano cars thought also the most alluring.

1963 Maserati 5000 GT by Fura.

It was capable in some of the configurations in which it was supplied of 170mph (275 km/h), the fastest road car of its day, almost matching the 183 mph (295 km/h) achieved years earlier by the Mercedes-Benz 300 SLR “Uhlenhaut” coupé, which was little more than a Formula One car with a bigger engine and number plates.  The 5000 GT was quite something and even if the early versions weren't exactly suited to urban use, they were never anything less than exciting.  All the 34 built still exist, most percolating between private collections, high-end auction houses and the odd appearance at an appropriately exclusive Concours d'Elegance.

The Gordon-Keeble GK-1 (1964-1967)

1965 Gordon-Keeble GK-1.

Although elegant and capable, the Gordon-Keeble was no thoroughbred.  Using a square-tube space-frame purchased as part of the assets of a bankrupt company, it was clothed not in hand-formed aluminum but with the much cheaper fibreglass.  Using various bits and pieces taken from the parts-bins of many manufacturers, it was powered by a 327 cubic inch (5.3 litre) Chevrolet V8, essentially the same motor found in everything from Corvettes to pick-up trucks and while it may have lacked a pedigree, the purchase and the running costs were appreciably less than Maserati 5000 GT, one able to buy one for a fraction of the cost and, if the worst came to the worst, replace the engine and gearbox for less than the cost of an Italian cylinder head.

1965 Gordon-Keeble GK-1.

All but one of the one-hundred Gordon-Keeble GK-1s were built in England between 1964- 1967 by engineers once associated with the Peerless company, one of quite a few briefly to flourish during the 1950s producing low-volume runs of swoopy-looking fibreglass bodies atop custom frames, using a variety of power-plants.  It was a simpler time.  The genesis of the GK-1 was a request in 1959 from a US Air Force (USAF) pilot then stationed in England to fit a Peerless with a 283 cubic inch (4.6 litre) Chevrolet Corvette V8.  The concept, essentially the same as that Carol Shelby (1923-2012) famously and historically would pursue by mating the AC Ace with the Ford V8 to create the Cobra (1962-1967), so impressed the engineers they took a V8 Peerless to Carrozzeria Bertone in Turin, Italy where a steel body designed by Giorgetto Giugiaro was built, appearing on Bertone’s stand at the 1960 Geneva Motor Show where it was well received.

1964 Gordon-Keeble GK-1.

After long delays related to securing contractual relationships with external component suppliers, the show car was finished to a point close to the standard required for regular production and, after testing which convinced the engineers it was a commercially viable proposition, sent to Detroit as a proof-of-concept for General Motors to evaluate.  Suitably impressed, Chevrolet agreed to supply the Corvette engines and gearboxes for the first production run.  Visually, the GK-1 differed little from the prototype, but structurally and mechanically, there were changes.  Most obvious was the switch of the body construction from steel to fibreglass, the engineers’ preference for aluminum prohibitively expensive and the Corvette engine was the newer 327 cubic inch (5.3 litre) unit introduced in 1962.  Mechanically, the GK1 was ready and reliable and, with its space-frame, De Dion rear axle, four wheel disk brakes, twin fuel tanks and a host of internal fittings hinting at a connection with aviation, the specification was tempting.  Released in 1964, the critical response was overwhelmingly positive (although nobody had a good word for the steering) and demand seemed initially strong.

1965 Gordon-Keeble GK-1.

However, the back-shed curse, which afflicting many small-scale British manufacturers in the era, struck.  Under-capitalized, the company was unable to successfully to link its cash flow with the demands of external suppliers upon which production depended and, whatever the engineering prowess available, the accounting skills required successfully to operate as a trading organization were lacking; a retail price under Stg£3,000 was unrealistically low and inadequate to support the actual cost of production and development.  By 1965, with ninety GK1s having been sold, the company was perilously close to insolvent and was sold but the new owners proved no more adept than the old.  After struggling to complete another nine cars (one more was added to the total in 1971, assembled the previous year from the residual spare parts when the factory was liquidated), operations finally closed, hopes of a US-based revival proving abortive.

Clan Gordon emblem.

One quirky footnote in the Gordon-Keeble story was the creature on the marque’s badge: a tortoise.  That may seem a curious choice for a vehicle designed for high-speed but the beast ended up on the badge because of a boardroom dispute.  Bertone’s prototype at the 1960 Geneva Motor Show had featured a badge with a stag's head, the emblem of the Scottish Clan Gordon to which belonged one of the founders of Gordon-Keeble.  Because the clan’s motto was Bydand (abiding or remaining) which, in modern parlance translates as something like “durable, immortal, steadfast & everlasting”, it was thought appropriate for the GK-1, which did live up to the motto better than most, some ninety-two of the one-hundred said either to be in running condition or undergoing restoration.

Gordon-Keeble corporate logo.

However, because of the long delays before production began, it was necessary to seek bridging finance and this brought the inevitable managerial disputes and as a result, Mr Gordon left, contractually obliged to allow the project to continue using his name but he withdrew the right to use the clan emblem.  With everything else going on, that wasn’t given much thought until late 1963 when, with a debut finally close, a photo-shoot was arranged so brochures and other promotional material could be prepared.  At just the moment the absence was noticed, a tortoise happened to be wandering in the garden chosen as the backdrop and the meandering Testudinidae, unaware of the minor role it was about to play in UK corporate history, was picked up and placed on the hood (bonnet), everyone amused at the juxtaposition of one of nature’s slowest creations adorning one of mankind’s fastest.  The tortoise was returned to the flower-beds and adopted as the emblem, appearing on the escutcheon of every Gordon-Keeble.