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Old 02-17-2014, 04:33 PM
young grease monkey young grease monkey is offline
Motorized Bicycle Elite Member
Join Date: Sep 2011
Location: Chicago
Posts: 362
Default Re: A useful metal-working technique

that's a nice idea for sure, i cringe at a lot of the motor mounts people come up with because they don't have much support area at all. another thing you could do is cast some jb-weld on the inside of the bend so it perfectly conforms to the tube. For the engine mount I'm building, I ordered tubing from Mcmaster-Carr with the same ID as the OD on my down tube and seat tube. Then I cut it down the middle, cleaned it up and welded one half to my mount plate with some brackets and whatnot, and used automotive muffler u-bolts to clamp the other half-pipe on. I also drove a piece of seat stem deep into the seat tube for extra support. It's gonna be bullet-proof!
some people say that a motorbike defeats the purpose of a bike. i tell them to get a flintstone's car.
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