cooper at Indy 500

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Author: ArchitectPage

THE 1963 Cooper did not differ greatly from last year's model. It is narrower and lower and has been "cleaned up", but most of the well-tried Cooper features are retained.

The multi-tubular frame has two upper detachable J!1embers for engine removal.

The frame tubes are used as water-pipes from the engine to the radiator in the nose, the small header tank being mounted behind the driver's seat. The seat is recessed into a central light-alloy fuel tank and two side tanks form the outer panel of the body in effect. In addition to the undershield there are only two body panels - the nose piece combined with the scuttle, which carries the screen, and the bonnet over the rear engine. 

Traditional Cooper suspension, with plain tubular wishbones, telescopic dampers and helical springs, is installed with angles of 5 deg. in front and 11 deg at the rear to prevent excessive nose dipping under braking and tail dropping during acceleration. Anti-roll torsion bars are fitted front and rear, both coupled to the lower wishbones, though the rear one is mounted above the suspension. The rack-and-pinion steering gear is ahead of the front wheel centres. Disc brakes are out-board mounted and the half-shafts still embody the typical large diameter splined inboard universal joints.

The engine is the latest Coventry Climax V8 with fuel injection and electronic ignition. It is in unit with the well-known Cooper six-speed gearbox, which was origmally developed from a Citroen component.  

The wheelbase is 7 ft. 7 ins.; track (front), 4 ft. 3! ins. (rear) 4 ft. 2 ins. The front tyres are 5.50 X 13 ins. and the rear 6.50 X 15 ins. on bolt-on light alloy wheels