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Pre-Motorized Bicycle Information. Before you mount that engine to your bicycle frame, you'll want to know if the bike is ready for the engine! Ask our experts here for advice on what motorized bicycle engines perform well on what bicycles.

Darn it!!!!! Please Help!!


Discussion at Motorized Bicycle Engine Kit Forum in the Pre-Motorized Bicycle Information. forum. No camera yet but I can borrow one. Thanks for the tips about washers and spacers. Pedal Pusher...
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Old 03-26-2009, 05:15 PM
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Default Re: Darn it!!!!! Please Help!!

No camera yet but I can borrow one. Thanks for the tips about washers and spacers.
Pedal Pusher
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Old 04-05-2009, 02:26 PM
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Default Re: Darn it!!!!! Please Help!!

no need for the chain to rub the wheel when a thin spacer will give you the extra clearance.
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Old 04-05-2009, 07:42 PM
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Default Re: Darn it!!!!! Please Help!!

I always used at least two fender washers to move the wheel over a bit. But that was a while back I have no idea how the newer kits might fit.
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Old 04-06-2009, 06:56 AM
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Default Re: Darn it!!!!! Please Help!!

Thanks Toytime for help about the spacers. I think I will need to use them to move the sprocket more to the outside to make it wider for it to be in alighment with the engine sprocket. Where would the spacers go? Outside the rag doughnut between the sprocket? Then too, I need to move more axle thread through the hub to have more thread on the sprocket side for the room taken up by the sprocket, retention arm, washer, locknut,. Without spacers now there isn't enough thread showing to install the mounting locknut for that side. So how do you move the axle through the hub? I have gotten it out of adjustment twice and carried it to the bike shop. It only takes a few seconds to adjust it, but I just don't seem to have the touch those guys do.
Thanks again.
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Old 04-06-2009, 08:07 AM
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Default Re: Darn it!!!!! Please Help!!

The two inner nuts keep the axle centred. Think of the axle as a threaded rod. If you loosen the nut on the right side, the axle can shift to the left and you tighten the left side nut. For every turn of the nut on right side, the left side nut will be tightened an equal amount.
As for spacers on the "rag", I would think an ideal spacer for this would be one large spacer with holes drilled for all the bolts. A third "rag" would do even if you have to make one out of plastic, rubber or metal.
I could be wrong but I don't think you would want to just go with washers as spacers because in my mind, the washers would sink into the rubber. Washers work well to spread the chain stay open though.

Last edited by toytime : 04-06-2009 at 08:22 AM.
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