Ardie RBU350: history, specs, pictures

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Ardie RBU350
Also called RBU 350
Production 1937
single cylinder, four-stroke
Bore / Stroke 72.0mm x 85.0mm
Horsepower 9.79 HP (7.3 KW) @ 4500RPM
Fuel System carburetor
Transmission Final Drive: chain
Suspension Rear: none
Brakes Front: expanding brake (drum brake)
Rear: expanding brake (drum brake)
Front Tire 3.25-19
Rear Tire 3.25-19
Weight 297.62 pounds (135.0 Kg) (dry),
Manuals Service Manual

The Ardie RBU350 was a single cylinder, four-stroke standard produced by Ardie in 1937. Claimed horsepower was 9.79 HP (7.3 KW) @ 4500 RPM.


The engine was a air cooled single cylinder, four-stroke. A 72.0mm bore x 85.0mm stroke result in a displacement of just 343.0 cubic centimeters.


It came with a 3.25-19 front tire and a 3.25-19 rear tire. Stopping was achieved via expanding brake (drum brake) in the front and a expanding brake (drum brake) in the rear. The bike weighed just 297.62 pounds (135.0 Kg).