

4/6/2006
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Phil WOOD "CHP" Pedals
Vince Connelly provided additional photos...S

The Phil disc brake.
A Phil brake as used on the front of a custom McLean (USA) racing tricycle
"The brake operates a lot like an
automobile clutch. A splined driver threads on to the hub. That in turn drives a splined
friction disc. The body on the brake is a backing plate and a pressure plate. The cable
actuating arms rotate cams that in turn cause four radially spaced lever arms to move the
pressure plate against friction disc and backing plate. Rodney Moseman |