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Discussion in 'Stretch Cruiser & Chopper Motorized Bicycles' started by Scorpion1, May 3, 2017.
I'd get a better sprocket adapter if I were you, even weak engines will rip the spokes out if you use a pineapple adapter, with the 212 your wheel won't last long.
Does the crank and your foot clear the engine? Did you have any challenges with this bike during the build? I am seriously considering building one of these.
That bike is unsafe to ride with the frame cut like that. The reinforcement you did is nowhere near adequate. I would have instead constructed a jackshaft so that the chain would clear the frame.
A Jackshaft would not have made a difference, there is simply not enough room there either way.
I can guarantee that I could have gotten a jackshaft to work. But either way, the bike is unsafe and should not be ridden in it's current condition.
You need some gusseting in there. You put the 212 on a micrappy so you need gussets regardless. Then ya took out a tube and still no gussets. I see a frame crack in your immediate future....
Oops I thought you cut a forward frame tube. Well the rear section fix you did in your cut is going to fail within 20mi. To fix that you'll need to cut the seat stay farther up both directions so that you can make a custom tube that goes around, and sleeve it both sides. Another thing you can do it get some 1" box tubing and sleeve it with the parts of the stay, then weld a connecting piece to the sides of the box pieces. Your frame isn't totally f*cked but it is definitely not good to ride.
And never drill directly into the frame like for your motor mount. That is another weak spot on your downtube. A crack there would cause a serious accident.
We're just trying to keep you from killing yourself.