Originally Posted by
Metzinger
K2? Both sides of the push-unit would need to fail for anything significant to happen. Then the bike would squat down in the rear. The sharp aluminum would be pointing rearward.
To me that sounds a lot more benign than, say, a front fork or stem failure. But more malevolent than a flat tire.
Yes, it's a K2 Razorback frame. That's what I figured, looking at it. The part that's cracked takes a small amount of the load. I imagine the screw could fall out if it cracked through, but I'd notice something by the time it works its way out.
Originally Posted by
4evrplan
Welding is the easy part. The real problem is that the heat soak from welding weakens the metal around the weld area, so it really should be heat treated after welding to re-temper the frame (although a lot of companies simply over-build the frame rather than heat-treating, because it's cheaper). I have no idea what that costs.
Well, it was designed as a lightweight XC racing frame, so I'm not sure how over-built it is. Are you saying that not heat treating after a little weld could cause other nearby parts of the frame to fail? I don't like the sound of that. However, it's such a tiny area I wonder just how much time has to be spent. What kind of welding would be required?