Started building my motorized bike today but ran into a problem

Rusty_Nail

Active Member
Oct 11, 2019
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Hey everyone, as I am new to this hobby i have run into a problem. Its on a cranbrook and when i try to turn the pedals the back wheel acts like it cant rotate. The drive chain is not connected to the motor yet nor is the clutch installed. Like its locked up or something. What can I do to fix this? Is it a common problem on Cranbrooks?
 

MEASURE TWICE

Well-Known Member
Jul 13, 2010
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I don't know if you have coaster brakes, but if so, then there has to be the bar from the hub clamped to one side of the back stay. If missing replace it. With it missing it acts like back pedal as in coaster braking.
 
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Rusty_Nail

Active Member
Oct 11, 2019
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Ok guys thanks again for the advice. I am getting a CBC sprocket. I noticed the hole in the cnc sprocket is a bigger diameter. Would it be possible to get it around the coaster brake arm without removing it? I’ve heard on the cranbrooks that once you remove the coaster brake arm you have to readjust the hub but I’m trying to avoid having to do that. I hear it’s tricky.