Re: New Build (raw engine)
I did something similar to that mount, only I popped in a couple 1/4 20 nutserts into the frame instead of using the water bottle mounts. Pretty solid, but then again I used 1/8 steel stock and bolted to the frame about 1"-2" above the motor mount.
I like those nutserts. They work for a lot of things and are pretty cheap. My frame may snap in half from drilling holes, but I don't think so. I've got several hundred miles on this one with no sign of fatigue.