Debut: April 2017



.: Simon Godfree's Tyrrell P34 6 Wheeler in Progress - COMPLETED & Displayed June 2017





Modelling Time:

30 hrs
so far....

PE/Resin Detail:

Seatbelts from Hasegawa Lotus 79 detail kit.


"Great old kit revived with PE detail set included.
Battery enclosure unfortunate hangover from original... "

Tyrrell P34

From Wikipedia, the free encyclopedia
Tyrrell P34
Tyrrell P34 1977.jpg
Category Formula One
Constructor Tyrrell Racing Organisation
Designer(s) Derek Gardner
Predecessor 007
Successor 008
Technical specifications
Chassis Aluminium monocoque
Suspension (front) Double wishbone, coil springs over dampers, anti-roll bar
Suspension (rear) Double wishbone, radius arms, coil springs over dampers, anti-roll bar
Axle track
  • Front: 1,234 mm (48.6 in)
  • Rear: 1,473 mm (58.0 in)
Wheelbase 2,453 mm (96.6 in)
Engine Ford-Cosworth DFV, 2,993 cc (182.6 cu in), 90° V8NAmid-enginelongitudinally mounted
Transmission Hewland FG400
Sequential manual transmissionZF differential
  • 1976: 595 kg (1,312 lb)
  • 1977: 620 kg (1,370 lb)
Fuel Elf
Tyres Goodyear
Competition history
Notable entrants Elf Team Tyrrell
Notable drivers
Debut 1976 Spanish Grand Prix
Races Wins Poles F.Laps
30 1 1 3
Teams' Championships 0
Constructors' Championships 0
Drivers' Championships 0
n.b. Unless otherwise stated, all data refer to
Formula One World Championship Grands Prix only.

The Tyrrell P34 (Project 34), commonly known as the "six-wheeler", was a Formula One (F1) race car designed by Derek GardnerTyrrell's chief designer. The car used four specially manufactured 10-inch-diameter (254 mm) wheels and tyres at the front, with two ordinary-sized wheels at the back. Along with the Brabham BT46B "fancar" developed in 1978, the six-wheeled Tyrrell was one of the most radical entries ever to succeed in F1 competition, and has been called the most recognizable design in the history of world motorsports.[1]

The P34 was introduced in September 1974, and began racing in the 1976 season. It proved successful, and led other teams to begin design of six-wheeled platforms of their own. Changes to the design made for the 1977 season made it uncompetitive and the concept was abandoned for Tyrrell's 1978 season. The other six-wheeled designs ended development, and F1 rules later stipulated that cars must have four wheels in total. The existing frames have since seen some success in various "classics" race events, but today are museum pieces.


For the mid-1970s, F1 stipulated that the maximum width of the front wing was 1.5 m. Considering the needed room for the driver's feet, the steering mechanism, suspension and the normal front tyre size, this meant the front tyres projected above and out to the sides of the wing. P34's basic concept was to use a tyre that would be small enough to fit entirely behind the wing. This would have two effects; one would be to lower overall drag and thus improve speed on straights, and the other was to clean up overall aerodynamics so the rear wing would receive cleaner airflow.[2]

However, given the space limitations such a tyre would have to be quite small, eventually settling on a 10 inches (250 mm) diameter. This had too small a contact patch to offer reasonable cornering performance, which led to the use of four wheels instead of two. Adding more wheels also had the advantage of offering more total brake area. The downside was increased complexity of the steering system and a physically larger suspension system. The steering complexity was solved by connecting only the front pair of wheels to the steering wheel, and connecting the rear set to the front with a bell crank. Initially considered to be a problem area, Joel Rosinsky later declared that "The steering is so gentle and absolutely free of reaction that you might have thought it was power-assisted!"[2]

The new design was unveiled at the Heathrow Hotel in late September 1975. The car was initially kept under a tarp with hoops over the wheels that make it look conventional, leading to astonishment when the tarp was pulled off. Some in the audience were convinced the design was a publicity stunt. The car first took to the track at Silverstone on 8 October 1975, and after more tests, Tyrrell decided to build two more examples with a slightly longer wheelbase to race in the 1976 season.[2]

Race history

Ken Tyrrell inspecting the P34
The Tyrrell P34 being driven by Jody Scheckter at the 1976 German Grand Prix.
1977-spec. Tyrrell P34B at the Silverstone Classic event in 2008.

The stretched versions first ran in the Spanish GP in 1976, and proved to be very competitive. Both Jody Scheckter and Patrick Depailler were able to produce solid results with the car, but while Depailler praised the car continually, Scheckter was unimpressed. The P34's golden moment came in the Swedish Grand Prix. Scheckter and Depailler finished first and second, and to date Scheckter is the only driver ever to win a race in a six-wheeled car. He left the team at the end of the season, insisting that the six-wheeler was "a piece of junk!"[3]

For 1977, Scheckter was replaced by Ronnie Peterson, and the P34 was redesigned around cleaner aerodynamics, and some redesign on Peterson's car for his height. The P34B was wider and heavier than before, and, although Peterson was able to string some promising results from the P34B, as was Depailler, it was clear the car was not as good as before. Tyrrell blamed the problems on the increased weight, now 190 pounds (86 kg) over the 1,268 pounds (575 kg) F1 minimum. This placed more strain on the brakes and made it struggle through the corners.[2] Others have blamed Goodyear's failure to properly develop the small front tyres. Late in the season an attempt to address the handling was made by increasing the track of the front suspension, but this moved the tyres out from their original hidden position, essentially eliminating the whole advantage to the concept.[2]

In November 1977, Tyrrell introduced his car for the 1978 season, and it had a conventional layout. He commented "In the meantime, we have closed the book on our six-wheeled project, and I am sure the cars will become something of a collector's piece". Tyrrell kept the frame that Scheckter won on, and sold the rest.[2]


More recently the P34 has been a popular sight at historic racing events, proving competitive once more. This was made possible when the Avon tyre company agreed to manufacture bespoke 10-inch tyres for Simon Bull, the owner of chassis No. 6. In 1999 and 2000 the resurrected P34 competed at a number of British and European circuits as an entrant in the FIA Thoroughbred Grand Prix series. Driven by Martin Stretton, the car won the TGP series outright in 2000, the sister car repeating that success in 2008 in the hands of Mauro Pane; this example is today part of a private collection in Italy. Stretton also achieved numerous pole positions and class wins at the Grand Prix Historique de Monaco. The P34 has also been seen a number of times at the Goodwood Festival of Speed.



Thanks Wikipedia!

Box art:


Click on each image for a closer look


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