Hello Bob, in most cases, you should be able to pedal too....all depends on how you do it. One option is to connect the engine to the left, free-wheeling wheel....so pedaling and use of the engine are totally independent. The other option is to attach a sprocket to the axle so the pedal and engine drive the same axle, same right wheel. By use of a clutch or a freewheel, you can disengage the engine and just use the pedals.