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Not that difficult to do, but it ruins a restoration.You don't use the P11 timing case cover. You use a Commando timing case cover. I don't have a tach, and at the time didn't care at all about restoring the bike to it's original configuration. My motivation at the time was to make the motor quicker and getting the rotating assembly balanced and lightened a little, installing flat top commando pistons, getting the head ported, putting a Combat SS cam in it, and making some manifolds to get a pair of MIkuni carburetors on did the trick. I believe the only modification needed on the timing side crank case is a solid piece of aluminum rod has to be welded into the case where the wiring for the points comes out of the cover, and a hole has to be drilled into the case through that solid piece of rod at an angle that matches up with the hole for the points wire in the timing cover. The crank case has to be surfaced where the rod is welded in. Also had to change the timing gear and timing chain setup to Commando parts where necessary. Not actually sure what I did there other than remove the timing chain pieces for the magneto. The main cases were also bored a little larger for cam lobe clearance. I put new bushes in it and shimmed it, but can't remember if anything special was done at the bush ends. Other things may have been done on the timing side case, but nothing that was real obvious to me without having another set of cases to look at.Anyway, it was a great idea 30 years ago. I wish I'd never done it now. It makes the bike difficult to sell for what it is actually worth as a reliable quick rider. I could revert back to the original setup. I still have all the parts to do it, but don't feel like breaking the cases and dealing with it. Maybe when I can't ride anymore I'll turn it back into a high pipe putt putt and sell it.
Not that difficult to do, but it ruins a restoration.
You don't use the P11 timing case cover. You use a Commando timing case cover. I don't have a tach, and at the time didn't care at all about restoring the bike to it's original configuration. My motivation at the time was to make the motor quicker and getting the rotating assembly balanced and lightened a little, installing flat top commando pistons, getting the head ported, putting a Combat SS cam in it, and making some manifolds to get a pair of MIkuni carburetors on did the trick. I believe the only modification needed on the timing side crank case is a solid piece of aluminum rod has to be welded into the case where the wiring for the points comes out of the cover, and a hole has to be drilled into the case through that solid piece of rod at an angle that matches up with the hole for the points wire in the timing cover. The crank case has to be surfaced where the rod is welded in. Also had to change the timing gear and timing chain setup to Commando parts where necessary. Not actually sure what I did there other than remove the timing chain pieces for the magneto. The main cases were also bored a little larger for cam lobe clearance. I put new bushes in it and shimmed it, but can't remember if anything special was done at the bush ends. Other things may have been done on the timing side case, but nothing that was real obvious to me without having another set of cases to look at.
Anyway, it was a great idea 30 years ago. I wish I'd never done it now. It makes the bike difficult to sell for what it is actually worth as a reliable quick rider. I could revert back to the original setup. I still have all the parts to do it, but don't feel like breaking the cases and dealing with it. Maybe when I can't ride anymore I'll turn it back into a high pipe putt putt and sell it.
