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Old 10-08-2009, 07:16 PM
pedro5189 pedro5189 is offline
Motorized Bicycle Senior Member
Join Date: Jan 2008
Location: England
Posts: 81
Default Bending a 4130 chromoly frame with heat question


I have a 24" wheeled jump frame that is 4130 chromoly, my plan is to modify it some what to fit a standard 135mm mountain bike rear hub in because as it stands it has a BMX width of 110mm. I have decided the best way to do this is to bend out the rear triangles at the point that they have been shaped for the tyre clearance as I believe this is the best way to keep the frames strength.

My question is, will it be ok to heat the tubing to red hot at the place I want to bend it?

Will the tubing loose much strength?

Will I need to quench it or just allow it a slow cool down?

Any other suggestions?

Thank you in advance
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