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AJS

AJS E95 (AJS Porcupine)

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AJS E95 Porcupine review

AJS motorcycles


Introduced in 1952, the AJS E95 (AJS Porcupine) motorcycle was a much-redesigned version of the E90 horizontal twin, knows as the Porcupine due to the spiky finning on the cylinder head. The original design was drawn pre-war when supercharging was legal, but when racing resumed post war, supercharging was banned and the Porcupine was uncompetitive. Only four of these machines were built. First revision the engine was carried in a double-cradle frame interrupted beneath the engine, and the machine appeared in the tourist trophy races, as did the three-valve single-cylinder 350cc 7R3. The following year, the E95 appeared with two separate cylinder heads instead of one common to both cylinders. The angle of the inlet points was reduced from 43 to 25 degrees to the perpendicular and the frame was also modified, gaining two side cradles supporting the engine. The end of works entries the final, 1954, mk 2 version was merely cleaned up aerodynamically, though it was not given a fairing. The front fork and steering head were shortened and the fuel tank was carried down over the flanks of the engine, so that a mechanical gas pump could be fitted, driven from the magneto shaft.

AJS E95 motorcycles.


Low and compact, the ultimate version of the e95 was typical of the aerodynamic theories of the fifties. It was raced in the sixties by mike duff and tuned by tom aster. More specs and user manual of AJS E95 Porcupine you can see in next overview.

AJS E95 specifications

Engine: 497cc (68x68.5mm) air-cooled twin-cylinder four-stroke;
Engine: 54 hp @ 7500 rpm
Valves: Twin overhead camshafts driven by pinions
Fuel system: Carburetor
Transmission: 4-speed; Dry clutch;
Chain final drive suspension: Telescopic forks (front);
Swinging forks with twin damper units
Brakes: Drum (front rear) wheels: 19 inch weight: 335 lb

AJS E95 motorcycles.
Tags:
retro racing

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