1955 Simplex


| 12/9/2015 9:38:00 AM


1955 Simplex Automatic Power Cycle

1955 Simplex

Country: United States
Engine: Air-cooled, single cylinder, 2-stroke
Ignition: Flywheel magneto, twin spark plugs
Bore x stroke: 2in x 2.534in
Displacement: 129cc
Valves: Rotary inlet valve in crankshaft
Fuel system: Tillotson carburetor
Transmission: Variable speed, with centrifugal-operated vee pulleys
Suspension: Front leading link fork, rigid rear
Brakes: Rear drum
Weight: 135lb
Top speed: 45mph

1955 Simplex Automatic Power Cycle

The Simplex was a very basic lightweight motorcycle with many features dating back to the early machines of the 1910s and 1920s, such as the belt drive. This bike would be a logical upgrade from a Whizzer-powered bicycle — economical, easy to operate and relatively inexpensive. The Salisbury-type clutch gave infinitely variable automatic gear ratios that greatly improved the performance.

1955 Simplex Automatic Power Cycle



1955 Simplex Automatic Power Cycle



The sound and the fury: celebrate the machines that changed the world!

Motorcycle Classics JulAug 16Motorcycle Classics is America's premier magazine for collectors and enthusiasts, dreamers and restorers, newcomers and life long motorheads who love the sound and the beauty of classic bikes. Every issue  delivers exciting and evocative articles and photographs of the most brilliant, unusual and popular motorcycles ever made!

Save Even More Money with our RALLY-RATE plan!

Pay now with a credit card and take advantage of our RALLY-RATE automatic renewal savings plan. You save an additional $4.95 and get 6 issues of Motorcycle Classics for only $24.95 (USA only).

Or, Bill Me Later and I'll pay just $29.95 for a one year subscription!




Facebook Pinterest Instagram YouTube Twitter

Free Product Information Classifieds