I'm working on a BMX bike. I'm building it out of my wife's old Mt bike. It is a Nishiki Colorado. It has a CRMO frame.
Here is my problem, the Mt bike frame has axle cutouts that face down, and the chain is adjusted by the derailler. ON a BMX bike, the cutouts are horizontal and you adjust the chain by moving the axle forward or back. I haven't put a chain on it yet, but if it ain't just right, then it will throw the chain. I was going to make a chain tensioner, but I just got the idea of changing the wheel mounting plates to horizontal.
The bike has a CRMO frame, but the axle mounts are cast. The are slipped into the end of the tubing and then brazed. Would they be cast CRMO or steel? The only thing that I have to weld with is a HH 125 or a torch. I'd probably use a torch as I think that it would give a better looking weld.
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