Swing Crank 4 hole

Swing Crank 4 hole

Use a Swing Crank when one of your knees doesn’t bend as much as it should. This adaptation will let you generate as much power as possible without the foot and knee being lifted so high.

• For use on upright bicycles and tricycles
• No need to raise your saddle or alter your riding position
• Uses your existing crank and pedal (suitable for all adult pedals with standard 9/16″ threads)
• A Swing Crank will let you set the knee bend that is comfortable for you
• A Swing Crank will let your leg straighten at the bottom of the stroke (unlike a shorter crank)
• Includes a Crank Shortener which may also be used on its own

Can be used on three wheeled recumbents, and two wheel recumbents with caution.

Adjustable for different degrees of disability

A standard Swing Crank and Crank Shortener each have three pedal holes. These allow you to adjust the effect to suit your particular needs. You can even reduce the effect in stages as you recover from a leg injury:

4-hole Long Swing Crank

The Swing Crank and the Crank Shortener each have 4 pedal holes, allowing the 4 basic setups with 164mm, 200mm 240mm and 286mm pedal circle diameters.  (These lengths assume your cranks are 170mm long. Increase them by 10mm for 175mm cranks and reduce them by 10mm for 165mm cranks.)