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Old 07-18-2011, 09:43 PM
Pycngryn Pycngryn is offline
Motorized Bicycle Newbie
Join Date: Jul 2011
Location: Park City,Utah
Posts: 7
Default Re: Thing to do / know before getting a Jack Shaft

My experience had been very troubled. After fixing "touching chain" issues with 3 spacer washers on the chainring posts and a washer on the Jack Shaft . 3 miles later the freewheel blows apart causing the chain to warp the small chainring, ruin the Jump Stop and the chain itself. The tool I ordered to remove the destroyed freewheel did not work and so I had to get new crank arms. 10 days and $140.00 later I am hoping to rebuild with extra plastic chain guards sandwiched on both sides of chain rings to prevent deraillments. Anybody else having these problems?
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