Ossa E-71: history, specs, pictures

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Ossa E-71
Manufacturer
Production 1971
Class Trial
Engine
Air-cooled, Single Cylinder, 2-stroke
Bore / Stroke 59.9mm x 59.9mm
Compression ratio 11.5:1
Horsepower 23.07 HP (17.2 KW) @ 6800RPM
Transmission Gear box: 5 Speed
Final Drive: Chain
Brakes Front: Drum
Rear: Drum
Front Tire 4.00-18
Rear Tire 3.00-21
Wheelbase 53.5 inches (1359 mm)
Weight 96.0 kg (wet)
Manuals Service Manual


The Ossa E-71 was a Air-cooled, Single Cylinder, 2-stroke Trial motorcycle produced by Ossa in 1971. Claimed horsepower was 23.07 HP (17.2 KW) @ 6800 RPM.

Engine[edit | edit source]

A 59.9mm bore x 59.9mm stroke result in a displacement of just 250.0 cubic centimeters.

Drive[edit | edit source]

The bike has a 5 Speed transmission.

Chassis[edit | edit source]

It came with a 4.00-18 front tire and a 3.00-21 rear tire. Stopping was achieved via Drum in the front and a Drum in the rear. The wheelbase was 53.5 inches (1359 mm) long.