Originally Posted by
70sSanO
My understanding is that hydroformed aluminum shapes for aluminum frames was the breakthrough over round tubing.
John
I think this is true. Auto manufacturers use this method to create shapes that are stronger in one plane, more compliant in others. Specialized says they use this process for many aluminum frames. I do know my Spec. Chisel is a very forgiving ride, doesn’t ride at all like old school big round tubed aluminum. .