drive shaft

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    A Different Mod....

    Hi guys. I've been building my motorized build from the ground up...so to speak. I slapped a 79cc Predator on a 21-speed. I removed the crank, using the bottom bracket to build a jackshaft ( 5/8" shaft 9"L 5/8" presicion bearings [OD 1- 3/8"] meshed int the original ballbearings). NO PEDALING...
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    Drive Shaft Completely Worn

    Still working out all the kinks on my new engine. It's been running fine for a few days but yesterday it wouldn't start or even turn over and the clutch didn't seem to engage. Opened it up today and found that the shaft that the drive sprocket is on was completely worn down and the woodruff...

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