Welcome to the new and improved Proflex / K2 Tech Forum!
Great information all. Thanks for the drawings and the removal idea Simon. Obviously, I am not a metallurgist, but tell me why aluminum would be better than stainless steel? Wouldn't stainless steel be more durable and fatigue resistant. IMO, I had the seat post all the way through the tube with just a bit of seat post showing at the bottom until last month. Last month my friend re-fit me to the bike and I raised the post up a bit so the bottom of the seatpost was just a 1/4 to 1/2 inch from the bottom of the tube. I also have close to 9000 miles on this frame. Thunderchild
Great fix Simon - appreciate all you do - OP(good karma stroke for simon)
A couple of more questions. 1. Anyone care to comment if it would be an improvement to increase the height of the thicker section of the seat tube above the frame?
Shovelon, I have a used a K2 alloy seat post since I built up the Oz. On another note, I started to build up my old 5000 frame to ride until the Oz is all better and found the already discussed cracks on the back of the seat tube by the water bottle mount. The search for a local aluminum welder begins. Simon, didn't you post a few pictures about welding a 5000 seat tube? I searched but couldn't find it. Anyone know the title or where it is? ThanksThunderchild