MPS Does it Again!

cwtoyota wrote:

When working with aluminum the area next to a weld is give or take abuot 50% as strong due to heat effect and stress risers. Butt...

When working with aluminum the area next to a weld is give or take abuot 50% as strong due to heat effect and stress risers.

Butt welding aluminum with 90 degree cut-joints is not strong. Just about every conversion I've seen is done in this way.

If you look at any stock bike you'll see they cut the tubing and components at big angles to increase the length of the weld and thus spread the stress out over a larger area. Most of those conversions just look sketchy to me.

This:

======||=======


is nowhere near as strong as this:

======//=======


Some places on the production bike frames even have a V cutline or diamond cut-line at the welds:

======>>======