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Old 06-25-2013, 01:01 AM
Mattjb Mattjb is offline
Motorized Bicycle Member
Join Date: Mar 2013
Location: San dimas
Posts: 25
Default Re: Motor mount; Clamp vs Welding

Majority of bike frames are thin (16g-18g) maybe less. Any undercut caused by welding not only makes a thin piece of metal thinner but also creates a point in the metal. I forgot technical term. Think of it this way, unfold a paper clip and in the center create a notch or indentation, now grab both sides of said paper clip and bend back and forth. It'll break where the notch was. Same thing will happen on your frame. Can it be welded? Sure. I'd go with a clamping method of some kind though unless ya have a heavy walled (thick tubing) frame. Just my 2cents
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