DetonatorTuning
Active Member
kerf,
there is potential in your proposal.
please define "your primary gear box" more closely. do you mean the 5:1 scooter tranny ?
you could only pull that off as a right hand drive because the tranny reverses the rotation. then you wouldn't have room for the pedal drive.
it would be totally do-able to; frame mount the 460 for standard left drive (which would be much narrower), hit a jackshaft for reduction advantage ,because the O.D. of standard V belt pulleys is not small enough to support a single step straight off the engine output shaft, THEN combine to a Whizzer sheave.
tensioning the final loop could be handled a number of ways, none particularly difficult. if done properly you could have the jackshaft outer plate be 1/4" and 1 piece with the engine mount, then use a square 4 bolt pattern to hold the inner bearing support plate and mount the pulley either between the plates or behind them like i've done on this one.
pedal clearance shouldn't be any more difficult than the 4strokes.
give me the "effective" Dia. of the Whizzer sheave or even the actual full O.D. and i will figure up the needed primary reduction.
got a frame in mind ? i can email you some sketches if you like.
thanks,
steve
there is potential in your proposal.
please define "your primary gear box" more closely. do you mean the 5:1 scooter tranny ?
you could only pull that off as a right hand drive because the tranny reverses the rotation. then you wouldn't have room for the pedal drive.
it would be totally do-able to; frame mount the 460 for standard left drive (which would be much narrower), hit a jackshaft for reduction advantage ,because the O.D. of standard V belt pulleys is not small enough to support a single step straight off the engine output shaft, THEN combine to a Whizzer sheave.
tensioning the final loop could be handled a number of ways, none particularly difficult. if done properly you could have the jackshaft outer plate be 1/4" and 1 piece with the engine mount, then use a square 4 bolt pattern to hold the inner bearing support plate and mount the pulley either between the plates or behind them like i've done on this one.
pedal clearance shouldn't be any more difficult than the 4strokes.
give me the "effective" Dia. of the Whizzer sheave or even the actual full O.D. and i will figure up the needed primary reduction.
got a frame in mind ? i can email you some sketches if you like.
thanks,
steve
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