DETAILS OF THE ESPRIT V8 RACE CAR
The car is a spaceframe based silhouette special, it's appearance is that of a Lotus Esprit, however, under the bodywork there lies a single seater racing car.
This car has been built to replace the car I ran from 1995 until 2013, I have spent 6 years designing and building the car, this page tells you all about the 'New Car, which will hopefully be as good as the 'Old Car' which sadly I had to scrap but you can read about by clicking on the 'Old Car' link.
The car is a built to Special Saloon car regulations, which don't restrict much so you can create very exciting fast cars that resemble a production saloon or sports car.
The side silhouette, the wheelbase and the windscreen all have to be the same dimensions as the car on which it is based and you must sit completely to one side of the cars centreline.
After that there are a few compulsory safety requirements, but thats it, after that you can pretty much do what you like !
My car is based on a Lotus Esprit S3 ...... but is more Lola and Chevrolet than Lotus ...... read on !
The car is based around a steel spaceframe, this is a tubular steel frame, onto which all suspension, engine, gearbox and body work is attached.
I designed the spaceframe around myself, giving me an improved and safer seating position than in the 'Old Car', it was also designed to have much improved stiffness, be light and have good structural load paths. The Spaceframe was built with a lot of help from PPC Cages, I made the front and rear modules and floor and PPC made the ROPS and welded it all together. It was then powder coated.
The bodywork is made from a number of materials, carbon fibre / fibreglass or plywood. The roof, rear bodywork and front bonnet are carbon fibre, the front bodywork, half doors are fibreglass and the side panels are plywood, the front spoiler is a mix of plywood and fibreglass.
The use of carbon fibre allows me to make lighter parts, however it is much more time consuming and costly, I hope to eventually remake some of the other parts in carbon to save additional weight.
The car is fitted with uprights / hubs / wheels off a Lola T8800 Indycar.
The suspension geometry has been designed and optimised using my Esprit Suspension Modeller software to achieve good camber and roll centre control.
The car has a rising rate suspension front and rear which aims to maintain the optimum wheel frequency throughout it's travel.
Front and rear blade type adjustable anti roll bars are fitted, the front blade is adjustable from the cockpit.
Both Slicks and Wet weather racing tyres are required. 9"x21.5"x15" tyres are used on the front, whilst 13"x24.5"x15" tyres are fitted on the rear.
The car has a full set of reconditioned set of Brembo Indycar calipers, 320mm dia AP racing discs front and rear, with pads made specially to suite.
The engine is a very interesting 5.5 litre Chevrolet Gen 3 LS6 race engine from out of a Pontiac Sports Daytona Prototype.The engine has very light internals and produces 575 bhp.....and 513 lbf.ft of torque...The engine is described separately.... see link above.
Now the engine is fitted with a Kinsler downdraught inlet manifold which should give better throttle response.
The Gearbox fitted is a Hewland DG300, a gearbox first used in Formula 1 and F5000 in the 60's and then later becoming the box to run at Le Mans. The gearbox is a 'dog ring' box with interchangeable gear ratios, it has 5 forward gears + reverse. Also fitted is a Salisbury limited slip differential. I purchased the box new from PDS Racing who set it up to suite my car.
ESPRIT V8 RACE
LINKS TO OTHER PAGES
The floor and bulkheads are aluminium, the rear bulkhead is covered in a heat barrier to help keep the cockpit temperatures down and also provide additional fire protection (just in case).
The bulkhead was designed with the lower half removable so the fuel tanks can be removed and for access to the front of the engine, to get at water / oil pipes, the alternator and crank sensor.
Additional downforce is provided at the front by a splitter and at the rear using a carbon fibre 2 element aerofoil.
Simon McBeath performed an aero analysis on the car and made a number of recommendations .most of which I have built into the car.
WORK IN PROGRESS .......... THIS PAGE WILL BE UPDATED ONCE THE CAR IS FINISHED AND I HAVE SOME GOOD PICTURES