I'm planning on bending a chromoly driveshaft loop.  In the rulebook section 2:4 states 7/8 inch x .065 inch welded steel tubing.  But I'm planning on 1" OD chromoly, so my question is do I still need to use .065" wall thickness or can I use .058" wall thickness? Y

Answer:

You will still need to use the .065 wall thickness for your driveshaft loop.