Does that Power Commander allow you to eliminate the rev-limiter function of the ECU?
Is it programmable to do that, or just over-rideable? Or neither?
we didn't get that far in ace, the rpm spike put an end to the run before we even really began
I've been trying to keep out of this thread, but your swing arm
is going to do some serious harm to your body. It is just too thin to have any bending strength even it were solid steel. If you leave the shocks mounted at the ends of the swing arm. The worst force you have on them is twisting when you are in a turn. but even that will cause metal fatigue and you would have a good chance of the arms breaking at the pivot.
If you had left the stock shock on in the original mid mounted position, the arms most likely would have broken right behind the shocks. You need some vertical stiffeners on them to beef them up. That's why most modern swing arms are rectangular tubing at exceed 2" high or more. With the length you have extended you swing arm, you have added an incredible amount bending and twisting force to those small tubes.
I don't know how you are planning to mount a monoshock. But I would recommend you mount it like the Vincents and old Yamaha Scramblers of the 70s with a triangulated section that makes the swing arm look like a hard tail. That design would give you a massive increase in bending and twisting strength.
Don't wanna try to tell you how to built your bike, but don't wanna see you hurt yourself unnecessarily.
Bare
I appreciate the concern Bare, I am a member of quite a few other forums and I am one of the first to jump on something I don't feel is safe or right.
The longer shocks mounted at the axle vs the stockers halfway down the arm took most of the vertical/bending forces out of play, I was concerned about the chance of the swingarm twisting so asked a supplier to put it through a structural analysis and it came up well within limits. (the rails on the swingarm are currently 36mm round bar)
The monoshock is a totally separate beast, and I'm going through a few different configurations.
The triangulated setup you are talking about was my first choice, but chain clearance is proving an issue, the swingarm rails would have to have 2 bends to get around the chain, and I would much prefer to keep the whole thing as straight as possible.
The current preferred option is borrowed from the atv world and will use a 0.160 wall 32mm DOM tube as the main axle arm, and then a full length underslung triangulation in 24mm DOM that will be boxed to the main arm, this will make the highest stress point in the swing arm (the lower shock mount) 80mm tall and the minimum height at the pivot tube and axle plates 56mm. The pivot tube will also be gusseted to the arms as will the lower shock mount.
None of this will go through until I have the calcs back, and who knows, maybe I will have to bin the whole idea. But I'm a glass half full kinda guy