During my second axle change in Washington (they ordered the first axle without EZLube and brake flanges the first time), someone managed to overheat the frame on the bottom. That being the worst place to make a weak point, of course it cracked in the heated zone.
When I noticed it, I drilled a 'stop-crack' hole and then took it to a friend in Florida where I happened to be. He effectively doubled the size of the frame at that point (notice all the nice angles he put on the repair part and he even made it so it would not be difficult to change the axle in the future -- See photo in previous post).
If you look in this Before photo, you can see the crack running alongside the bead (Photo is looking up at the bottom of frame).
Dexter actually recommends use of the weld-bolt bracket for attachment to tube frames like on the Scamp
. It allows subsequent replacement of the axle without further welding.
Attachment to Structural Tube Type Frame
a. Dexter Axle recommends the use of side mounting hangers
when mounting axles to tubular type frames. These hangers
provide a convenient means for bolting the axles in place. All
of the necessary components are included in the Side Mount
AP kits listed in Chart 1.