Cyclemaster
Автор: ArferNower
Загружено: 2025-09-19
Просмотров: 26
A Cyclemaster was a British-produced motorized bicycle rear wheel attachment with a small 25.7cc or 32cc two-stroke engine, made by EMI and sold in the 1950s to motorize standard pedal cycles. The "wheel motor" was popular for its simple design and was a cheap source of powered transport in post-war austerity.
How it worked
Wheel-mounted engine:
The Cyclemaster was a complete rear wheel containing a compact, single-cylinder, two-stroke engine.
Dismountable design:
It replaced a standard bicycle's rear wheel, allowing users to motorize their existing pedal cycle.
Clutch and clutch operation:
The engine had a disc inlet valve and drove a countershaft carrying a clutch via a chain. You would then pedal away to start the engine, dump the clutch, and apply throttle to engage the engine.
Features and popular models
Engine capacities: The original 25.7cc engine was later upgraded to a 32cc version.
Fuel: The engine required a petrol and oil pre-mix.
Roundsman: In 1953, a complete machine called the Roundsman was offered, built as a delivery bicycle with a large carrier.
EMI ownership: The motor, based on a Dutch design, was produced by EMI at Hayes in Middlesex.
Why it was popular
Cost-effective: It was an affordable way to get powered transport in the frugal 1950s.
Ingenious design: The wheel-mounted, compact engine was an ingenious design that provided power without altering the main bicycle frame.
Fuel efficiency: Some users reported excellent fuel consumption, with one account of 200 MPG on a tandem with a sidecar.
Music
Morningtown Ride by Stan Butcher
(Ed Stewarts Junior Choice Radio theme tune)
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