I have centrifugal clutches on two engines, both also have the standard clutch that comes on the engine, and yes I can pedal start either of them if I choose. I too had to add the wider crank because both the centrifugal clutch and the pull starter will hit the pedals with out the wider crank. In rural areas the pedal start is fine for me but here in the city where I make a heck of alot of stops on every ride, the centrifugal is a wonderful addition. I'll add both items to my 3rd build if I can get pedal clearance. The latest bike is an OCC Chopper and it presents plenty of challenges. Haven't started it yet but have been reading what others experienced.