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Old 10-22-2010, 11:56 AM
videomandw videomandw is offline
Motorized Bicycle Member
Join Date: Jun 2010
Location: indiana
Posts: 25
Default Pinion Gear Keeps Coming Off


i've been having a problem with the small pinion gear that drives the larger clutch gear on my chinese two stroke. it has sheared the little key that fits between the pinion and crankshaft end three times. i've ordered new gears and new keys but it keeps doing it. i suspect it is because the slot on the end of the crank has been widened a little whenever the keys sheared. in other words, the keys fit into the crank slot kind of sloppy.

i just put another pinion gear and key on today.l i am not expecting it to hold very long. does anyone know of a fix for this? what are my options? am i going to have to install a whole new crank because of the sloppy fit slot? if i have to install a crank, how involved is that? what are the steps i have to take?

thank you in advance for any advice. if anyone has had their pinion gear come off several times, please let me know and what you did to remedy it.

valparaiso, in
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