OK, here is my first donor bike, a 2000 Yamaha YZ 400f, Yea...one down, one to go. I think, on some advice from an off-road race vehicle builder here, at least at first, I'm going to use a steel frame utilizing the bike frames as much as possible. This was my first plan anyway, and as they say...Keep It Simple Stupid! When I get drawing I tend to keep going to end up with the ultimate, but when it's time to build, sometimes it's better to start simple, especially with a totally new design, almost. The photo looks weird because it's actually two put together, I forgot to take one of the whole thing. It will have the top down tube cutoff about even with the tape measure in the front of the bike and just above the swingarm mount in the rear. The rear shock will lean back and mount to the seat back, and the seat base will be above the swingarm mount. The bottom tubes will be lengthened until the footwell is just behind the front tire travel. I may end up shortening the front suspension forks to get it lower. I don't need a foot of suspension travel.
