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All information on this page was provided by Russell L Shreve.
Russell Shreve wrote: This is the Lotus 11B with the first HyperPak dyno test engine. It is the first race car to successfully use the engine as a stressed member of the chassis. Colin Chapman asked me how I made it work, because he had tried it in an early design of his that was a disaster. He used my answer to design the Ford-Indy-Lotus. I would like to find the Lotus-Valiant. Maybe someone out there knows where it is, but has no idea of its history.
Lotus-Valiant chassis rear left quarter view ith body off. The load path is from the rear suspension points. through the central structure around the transmission, through an aluminum plate between the transmission and engine, through the engine to the front suspension. The differential is a Valiant rear axle I modified to a DeDion arrangement. Gear ratios were changed by exchanging the three differential assemblies, each with a different ratio. After unbolting the half-shafts, the differential assembly detached from the frame by removing three bolts.
EX-1:
The dyno development engine for the HyperPak. Note the Mylar Valiant sticker.
Lotus-Valiant at early race before paint. If you wondered where the carburetor went, now you know. This system worked perfectly even at 186 mph!
Body Construction Aluminum fabrication with light weight, aerodynamic shape Type Lotus Mark Eleven Frame Space structure of welded steel tubing and riveted on stressed sheet aluminum; engine used as stressed member to give chassis torsional rigidity. Length 135 inches Width 62 inches Height 27" (at cowl), 33" (at windscreen) Wheelbase 86 inches Tread 7 inches Engine Source Valiant HyperPak Type 6-cylinder in-line overhead-valve Bore 3.41 inches Stroke 3.125 inches Capacity 170 cubic inches (2.79 liters) Horsepower 182 Fuel System Side-mounted 7 gallon aluminum fuel tank, engine mounted mechanical fuel pump Transmission Warner T-10 4-speed synchromesh Differential Source Modified Valiant Mounting Sprung Ratios 3.23, 3.55, 3.91:1 Front Suspension Type Independent Standard production parts Knuckles, hubs, steering arms, upper control arms Steering Rack and pinion Fabricated parts Anti-roll bar, lower control arms, coil-shock springing Rear Suspension Type DeDion: 4-link parallel geometry with right hand lower link triangulated, coil-shock springing Wheels and Tires Goodyear racing tires Front 4.5 - 5.0, Rear 5.5 - 5.9 Wheels 15" Dunlop steel rim and wire spoke with center knock-off mounting; 4.5" width front, 5.5 rear Brakes Type Girling 9.125" disk with alloy calipers Front mounting Wheels Rear mounting Inboard, at differential Cooling Radiator Custom made, high density core, cross flow, separate header tank Weight Overall 1406 lb with full tank of gas (7 gallons) Distribution 45/55 Weight:Horsepower ratio 8.6 lb/hp Engine 533 lb Final drive 73 lb Transmission (w/propshaft, etc) 104 lb Front suspension 47 lb Rear suspension 31 lb Steering 25 lb Wheels and tires, incl spare 152 lb Brakes 60 lb Electrical 38 lb including battery, wiring, instruments, controls Cooling 23 lb Chassis 24 lb including exhaust, fuel system, clutch Frame 106 lb steel, 40 lb aluminum Body 64 lb - includes 6 lb seats and trim Liquids 87 lb (fuel, water, water)
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