Originally Posted by fatdaddy
I've used a seat post shoved down the tube to repair a broken seat tube, Ya shove in a snug peice of post then weld it up. It makes a very secure repair.
My point was to not have to repair a broken frame.
Mount the engine right and you will never have to.
If that involves a piece of seat post tube shoved down to the mount point so be it.
Just make sure the back motor mount is one with frame and go from there.