Originally Posted by nix510
There actually aren't any frame tubes at all below the motor.I know this because I happen to own this particular frame.All of the bracing is in the backbone tubes and around the TZ750 steering neck.I do not race the bike,but under very fast road conditions the frame is very stiff,especially compared to an " in the day" stock or even moderately braced frame as I have owned and ridden both forms of wobbly goblin.
This is a very interesting build story that I will go into later at length when time permits.A friend just sent me the link to the photo in the forum and I just recently joined the community.
In the mean time, could you post up a few picture of the bike in it's current state. Looking forward to reading about the beasty.