Cyclo BROMPTON

Most electric bikes have a hub motor in the front or rear wheel that provides power between 0 and 15mph with a single gear ratio.

The Cyclone system powers the bike through the chainwheel and so it uses the gears to tackle a range of terrain: good hill-climbing and a decent top speed

 

Looks like a BROMPTON,
folds like a BROMPTON,
goes like a ROCKET!

cyclo BROMPTON

A key feature in Cylone™ systems is the Freewheel Chainset: It doesn't push the rider's feet round under power, and avoids injury through feet slipping from the pedals

The crank is unusual as it is threaded onto the chainset using a freewheel. Using the 44T chainring, or a 4-arm or 5-arm spider a chainset is built up with sufficient space to accomodate 2 chains (1/2" Brompton rear and 3/32" 7-speed drive chain)

Cyclone
cyclo BROMPTON

The motor cradle is designed for light weight and strength to support the high motor torque.

A chain tensioner (not shown) also has 3 positions. 2 frame clamps (with plastic tube to prevent paint damage and provide grip) hold the cradle to the bicycle frame.

In some cases a torque arm is required from the motor to the frame to prevent rotation of the cradle under full power.

cyclo BROMPTON