I am looking to create a couple good durability test for BMX frames. In addition to weld/joint testing I'd like to develop a couple test to stress frames to failure. However, prior to that I'd like to hear from all readers that have experienced a frame breakage.

This is not intended to stir a frame debate. Manufacturer vs. Manufacturer or Made in USA vs China. Not an Aluminum vs. 4130.

At this point, this is only for Aluminum.

I'd like to know
1.) Was it a "snap" or a fatigue break?
2.) Was it a weld or a tube failure?
3.) Where was the break?
4.) What were you doing when the break occurred? Case a jump? Crash? Etc... ( I need to understand the direction of the force)