Posts Tagged ‘Tyrrell 002 Ford’

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Jackie Stewart being largely ignored by most of the ‘snappers’ at Zandvoort during the Dutch Grand Prix weekend in 1971…

Rainer Schlegelmilch’s shot seems to be a portrait of his colleagues, Diana Burnett is the lady, the distinctive figure of Bernard Cahier is the chap in the blue cap and Goodyear jacket. It’s dry which makes it practice, the wet race was won by Ickx’ Ferrari with JYS 4th in Tyrrell 003 Ford.

I was first smitten by single-seaters upon spotting Jochen Rindt’s sensational ‘Gold Leaf’ Lotus 72 in the Automobile Year 18 ‘centrefold’ below.

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Rindt on his way to a joyless first GP win for the Lotus 72 Ford during the 1970 Dutch GP at Zandvoort, his close friend Piers Courage perished in a grisly, fiery accident during the race in a De Tomaso 505 Ford (Automobile Year)

The book came from the Camberwell Grammar School library, I was an inmate for 6 years and borrowed these annuals, they bought the latest each year, hundreds of times over the years. If truth be known I surgically removed many of the full page color shots from the books which somehow found their way onto my bedroom wall, I was skilful with a razor blade long before I could shave!

So, I was a devotee of Colin Chapman’s Lotus 56/72 side radiator, chisel nose aero approach rather than Derek Gardner’s chunky ‘sportscar nose’ alternative he pioneered in F1 with Tyrrell in ’71. That the alternative approaches worked equally well was proved by the results of practitioners of the ‘two schools’ of aerodynamic thought throughout the ‘70’s, visually though it was ‘no contest’!

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Derek Gardner and Ken Tyrrell outside the Ockham, Surrey factory in August 1971. Tyrrell Ford could be ‘002 or 3’, ‘bluff nose’ first raced at the 4 July ’71 French GP  (Klemantaski)

Gardner’s Tyrrell period was relatively short but wonderfully sweet…

Seven years is a pretty long stint with one team I guess. His first series of cars was the 1970-72 ‘001-004’, the second series the 1972-3 ‘005-6’. Both designs won Grands’ Prix and World Titles. His ’74-5 ‘007’ and stunning ’76-7 ‘P34’ six-wheeler won Grands Prix only, no titles. I doubt there are too many of the F1 design greats who can claim such a record.

I’ve written a few Tyrrell articles, which are worth a look if you haven’t done so; one is on innovation; https://primotipo.com/2014/09/16/tyrrell-019-ford-1990-and-tyrrell-innovation/ , the other on aerodynamics; https://primotipo.com/tag/tyrrell-007-ford/

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The car pictured above is Jackie Stewart’s ‘004’, the last of Gardner’s first series of designs.

It’s being prepared for the 1972 Monaco Grand Prix, ‘004’s race debut, the GP classic won by Jean-Pierre Beltoise’ BRM P160B, famously his first and last GP win was also BRM’s last. JPB’s delicacy in the wet was aided by some schmick Firestone wets but it was a great drive by any measure. Jackie was 4th in ‘004’, he was not feeling 100% shortly thereafter was diagnosed with a stomach ulcer. Francois Cevert non-classified further back in ‘002’.

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JYS practices ‘004’ at Monaco in 1972, the race was somewhat wetter! (unattributed)

The first Tyrrell, ‘001’ made its race debut in Stewart’s hands at Oulton Park in the ‘International Gold Cup’ on 22 August 1970…

 The car was famously designed and to an extent constructed, in secret in Gardner’s home garage in Parklands Avenue, Leamington! The ‘bath tub’ monocoque chassis was built to his design by Maurice Gomm’s Gomm Metal Developments, later chassis were built at Tyrrell’s famous woodyard, the base of his timber business in Ockham, Surrey.

Other notable sub-contractors involved were Jack Knight Engineering who did much of the machining, Aeroplane and Motor who provided the centre lock magnesium alloy wheels, Laystall the stub axles, not to forget Cosworth Engineering, Hewland’s and others.

‘001’s championship debut was at Mont Tremblant, the Canadian GP on 20 September where Jackie plonked it on pole and was leading strongly before a stub axle broke on lap 32.

The car was therefore ‘match fit’ at the start of its dominant 1971 season having done vast amounts of Goodyear testing, Dunlop, Tyrrell’s hitherto tyre supplier having withdrawn from F1. Over the South African summer at Kyalami over 400 tyres were tested by the team.

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Tyrrell and Stewart during the Oulton Park International Cup weekend in August 1970 upon ‘001’s debut. In a meeting of contrasts JYS qualified poorly after the fuel metering unit failed, then had a stuck throttle during the race which was fixed, the Scot broke the lap record twice later in the race, the cars competitiveness clear from the start. John Surtees won the event on aggregate, he won the second heat in his Surtees TS9 Ford and Henri Pescarolo the first heat (his only F1 win?) in a March 711 Ford

 

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More shots of ‘001’ during the Oulton August weekend. The cars distinctive bodywork was Gardner’s work and was tested at 1/10th scale in the wind tunnel of the University of Surrey in Guildford (Getty)

Powered by the good ‘ole 3 litre Ford Cosworth DFV V8 and using the equally ubiquitous Hewland FG400 5 speed transaxle, the bolides were ‘kit cars’ of the period derided by Enzo Ferrari but  remarkably quick bits of kit!

Look back to the photo of ‘004’ chassis at Monaco above.

The monocoque was made of 16 gauge NS4 aluminium alloy and like ‘002’ and ‘003’ was 4 inches longer in the length of the tub and 1 1/2 inches longer in the wheelbase than the prototype ‘001’.

You can see the wide based lower one piece wishbone is mounted both to the tub and at its outer end the tubular suspension carrying frame which was first made up on a jig and then slipped over the top of the monocoque to which it was externally riveted. The upper suspension arm is a top link and locating link mounted to a bracket on the tub. Shocks are alloy bodied, double adjustable Koni’s- again period typical. The simple steering column is clear, the rack made by Tyrrells.

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Tyrrell 002-4 cutaway drawing, all chassis the same design, this car is ‘003’. Specs as per text (Tony Hatton)

The vastly strong 360 degree roll bar encircled the the rear bulkhead and was both spigoted and bolted through into the monocoque. The DFV, stressed of course, was then bolted through this hoop. The forward radius rod pickups you can just see attached to the bar structure.

The rear was also a close to perfect expression of period paradigm; single top link, twin parallel lower links to better control toe than the inverted lower wishbone used for the decade before, two radius rods for fore and aft location and again coil spring/Koni dampers.

Brakes are Girling calipers, ventilated rotors front and solid rears of 10 1/2 inch diameter with Goodyear tyres used from the start of 1971.

‘004’ was completed at the end of the ’71 season as a spare car for Stewart, it was relatively lightly raced by the works, click on this link for a full, interesting article on the car which is still alive, well and historic raced; http://www.britishracecar.com/JohnDimmer-Tyrrell-004.htm

Gardner’s ‘005-006’ cars were low polar moment, very quick, nervous devices from which the aces for which they were designed, Stewart and Francois Cevert extracted ‘every ounce’ of performance in later 1972 and in 1973.

Here is my short article about these cars; https://primotipo.com/2014/08/25/jackie-stewart-monaco-gp-1973-tyrrell-006-ford/

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Ken Tyrrell supervising the packing away of ‘003’ at the end of a Goodwood test session on 16 January 1972 prior to shipping the car to Argentina for the start of that season.

There Jackie drove it to his first win of a season in which Emerson Fittipaldi prevailed in the gorgeous, chisel nosed ‘John Player Special’ Lotus 72 which I think is about where we came in…

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The ever thoughtful Derek Gardner in blue shirt watches ‘Emmo’ head out for some more practice prior to the ’72 Italian GP, Monza. The Brazilian won the race and title in his Lotus 72D Ford. Francois Cevert is behind DG, his car Tyrrell 002, DNF with engine failure (unattributed)

 

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’71 Dutch GP collage (Schlegelmilch)

Etcetera…

(T Matthews)

Some Tyrrell innovation over the 1971 Monaco GP weekend.

‘002’ was fitted with this ‘floating twin-disc’ brake assembly during practice. The thin discs float on the heavy splines of the hub to find their own centres relative to the pads in the caliper, which is mounted at the rear of the assembly. The pads are operated by a double piston assembly on the inner side of the caliper. Note the wheel locating pegs and single tapered wheel nut.

Photo and Reference Credits…

Rainer Schlegelmilch, Victor Blackman, Getty Images, Klemantaski Archive, Tony Hatton, Tony Matthews

Doug Nye ‘The History of The GP Car’, The GP Encyclopaedia

oldracingcars.com Checkout Allen Brown’s pieces on ‘001’ https://www.oldracingcars.com/tyrrell/001/ and ‘002-004’, inclusive of chassis by chassis records https://www.oldracingcars.com/tyrrell/002-004/

Tailpiece: Opening Dutch GP shot, uncropped, low res…

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(Schlegelmilch)

 

Finito…

 

 

 

 

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The ever innovative Derek Gardner with an ‘aero-tweak’ being tested on Francois Cevert’s Tyrrell 002 Ford during Italian GP practice at Monza on 10 September 1972…

This huge sleeve over the exhausts is cowled from the oil coolers back, the idea being to harness the exhaust gas energy to entrain air through the sleeve and enhance airflow and hence better cooling thru the oil rads.

Francois hadn’t done too many laps when the ‘prophylactics’ parted company with the car at very high speed, bouncing their way into lightweight schrapnel around the famous autodrome, fortunately ‘002’ was well clear of any following cars at the time!

The shot below shows a standard ‘006’ rear end to give an idea of how the car appeared sans ducts.

Ken Tyrrell and Jackie Stewart discuss the sublime weather before Francois is sent on his way. These cars evolved a lot throughout 1972/3, the Tyrrells arguably (Lotus 72 pace duly noted!) the quickest cars of the era from the time ‘001’ first raced at Oulton Park later in 1970 until Stewart’s retirement and Cevert’s death at Watkins Glen at the end of 1973.

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Date and place unknown, 1973 Tyrrell 006 Ford, Cevert up (unattributed)

Monza 1972 wasn’t a good race for the ‘Boys in Blue’ at all though, JYS popped a clutch on the line and was lucky not to get ‘whacked up the clacker’ at a million miles an hour and Francois’ engine ‘popped’ on lap 14. Emerson Fittipaldi took the race and the ’72 title in his Lotus 72D Ford.

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FC looking very ‘chillaxed’ prior to the ’73 British GP at Silverstone, Tyrrell 006 Ford (unattributed)

You might find this story about Cevert’s early career of interest if you haven’t already seen it;

https://primotipo.com/2014/11/07/francois-cevert-formative-years/

I wrote an article a while back about Team Tyrrell and innovation…

Have a read of it if you haven’t, its amazing just how ‘edgy’ Ken’s boys were over the years given their resources relative to bigger, better funded teams;

https://primotipo.com/2014/09/16/tyrrell-019-ford-1990-and-tyrrell-innovation/

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Roll on into mid-1973 and Derek was considering his overall design and aero alternatives for his 1974 car…

Here Francois is testing ‘005’ during British GP practice at Silverstone in mid July, JYS did a few laps in the same car carrying #42. It looks remarkably cohesive for a car designed originally with a totally different bluff nose aerodynamic concept!

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Compare and contrast the ‘normal’ bluff nose Tyrrell ‘006’ Cevert races here in front of James Hunt’s March 731 Ford at the British GP, Silverstone in 1973, with the ‘005’ chisel nose he tested in practice above. Hunt was a splendid 4th, Cevert 5th, Revson took his first GP win in a McLaren M23 Ford (unattributed)

It was a good year until the US GP, JYS took his third title in the ‘low polar moment of inertia’, short wheelbase, twitchy but very quick in both Stewart and Cevert’s hands, Tyrrell 005/006 cars.

Click on this link for a short story about those cars;

https://primotipo.com/2014/08/25/jackie-stewart-monaco-gp-1973-tyrrell-006-ford/

Gardner had a pretty handy additional test pilot in Chris Amon who was contracted the drive the spare Tyrrell 005 in the end of season North American GP’s at Mosport and Watkins Glen.

Chris was always rated as a test-driver by all he raced with from Ferrari’s Mauro Forghieri ‘down’.

Amon raced ‘005’ in side radiator/chisel nose spec in Canada. He didn’t race it at Watkins Glen after Francois’ fatal accident on the Saturday resulted in Ken Tyrrell withdrawing the teams cars for the race, which would have been the retiring Stewart’s 100th GP.

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Chris Amon 10th in Tyrrell 005 Ford in the Canadian GP, Chris has ‘modified’ the cars nose during the race. JYS was 5th in 006, Cevert DNF after a collision with Scheckter, Peter Revson won the race in a McLaren M23 Ford (unattributed)

Derek Gardner tested the ‘chisel nose, side radiator’ aerodynamic approach pioneered by the Lotus 56 at Indianapolis in 1968.

After the history making changes at the 1973 seasons end Derek Gardner threw out the conceptual approach he had decided upon for 1974.

The proposed car was to be a ‘highly strung thoroughbred’ from which maestro’s Stewart and Cevert could extract every ounce of performance. His change was to a much more forgiving chassis attuned to the developmental needs of ‘cub drivers’ Jody Scheckter and Patrick Depailler for 1974, his ‘007’ design was the very effective result.

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(unattributed)

Tyrrell 007 Ford cutaway above. The design comprised an aluminium monocoque chassis, Ford Cosworth 3 litre DFV V8, Hewland FG400 5 speed transaxle, disc brakes inboard front and rear, wishbone front suspension with coil spring dampers, rear suspension by single upper link, lower parallel links, radius rods and coil spring/damper units anf adjustable roll bars.

Checkout Allen Brown’s oldracingcars piece on ‘007’ inclusive of chassis by chassis history; https://www.oldracingcars.com/tyrrell/007/

Tailpiece: The ’74 Tyrrell 007 Ford in Depailler’s hands, Swedish GP in which he was 2nd and Scheckter’s 1st, winning the South African’s  first GP. Evolution of Derek Gardner’s aero thinking clear from ’73-’74, mind you he went back to a bluff nose for his outrageous P34 6 wheeler for 1976…

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(unattributed)

Credits…

Rainer Schlegelmilch, Doug Nye ‘History of The GP Car’

Finito…