A most interesting thread this one, i am currently gathering parts to build a 7/11 Kat . Just added some more nice parts to the heap today Looking around on the net the amount and placing of some of the bracing seems universal. Other chassis areas more regional, fashion perhaps johnr question for you sir, in your photo the underseat tray you have made how deep is that and is it hidden from side view with the seat in place. Katmangler your frame side brace is that just a flat plate or boxed like johnr`s ? Pedda do we have link to that race bike ? Thanks