Originally Posted by Ua the Destroyer
1100 & 1150 motor mounts for the front subframe are the same so it will fit an 1100.
The bike in the first 2 post where built by HPN and BMW to race and win Paris Dakar if you google 900RR & HPN there is plenty of information out there. The HP2 Enduro came about from these bikes. I have studied alot of photos before I drew up my frame. Have a look at the links for some information
I am using parts off a YZ donor bike but the frame is way to small for the BMW engine as for steering head angels look at KTM 950 990 Super Enduro to get some ideas the YZ has about an extra 1 Deg steering head angle.
I will measure the distance from the front axle to the pivot point for you.
Rough but close measurement 108cm