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Old 04-13-2014, 12:28 AM
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massdrive massdrive is offline
Motorized Bicycle Elite Member
Join Date: Oct 2013
Location: Las Vegas
Posts: 455
Default coaster brake revisisted

So this is my 3rd attempt to fab a coater brake arm to go around a sprocket on an adaptor. The 1st attempt failed badly. The second attempt was a total redesign and worked perfect. The problem was it was only a prototype to prove the new design and I just hose clamped it to the frame. Unfortunately I lost the in process pics I took. So the finished installation pics will have to do.

I started out with a short length of 1" x 1/8" box tubing and started cutting and welding. 1st I slit the tubing lengthwise and than milled the pieces to 3/16" thick and then welded the 2 half's together. I slit and bent to form the bends and radius. Tacked it together and fit it before finish welding. I made a aluminum mounting bracket and welded to the frame. Ta da... a new old school functional coaster brake arm.
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If you have to force it there must be a better way
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