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Old 11-12-2014, 09:25 PM
Imthegrt1 Imthegrt1 is offline
Motorized Bicycle Member
Join Date: Nov 2014
Location: USA
Posts: 42
Default Re: bottom bracket jackshaft

Originally Posted by BarelyAWake View Post
Keeping in mind not all bottom brackets are the same - I used 499502HNR sealed bearings w/snap rings (5/8" ID x 1-3/8" OD, same as the shift kits) & after lightly honing down the threads in the BB they pressed right in. Add a 5/8" keyed shaft, "BMX" freewheel, threaded freewheel adapter, lock collars & 5/8" keyed sprockets of your choice;

pedal driven:
engine driven:

So were did you get the shaft and bearing from looks real good.
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