Dap,

Sorry to hear that you have no splines in your rotor. There has to be splines. It cannot rely upon just the clamping force of the compensator.

[Linked Image]

ALL Harley type rotors have splines, even my '76 Shovelhead has them.

Because of your loose crank compensator nut, and the fact that you did NOT have significant wear on the sprocket and splined hub, the wear on the outside of your rotor is still very evident.

IF your comp did not wear like JV's did, the rotor scuffing wear has to be from it being loose on the crankshaft spline. Running like this would eventually chew up the soft metal rotor splines and you would then just have a round hole. I would check the crank for wear in the splines and also scuffing on the stator may have happened if the rotor was very loose and could wobble. The clearances between the magnets in the rotor and the stator are quite close. I doubt there would be any operational damage to the stator, but cleaning it up should be done if scuffed. Also, is there any major metal dust in the magnets?

If there is some wear on the cranks splines, it will be just where the rotor thickness is, about 2mm to 3mm wide. The good thing is that when you go to the Centa conversion, the new hub adapter and rotor will be a full spline coupling and just a couple mm will not be any issue at all. But if your splines are worn a bit, fitting in new stock rotor could be a problem getting the splines to hold like new.

I don't know if you have intentions of sticking with the Harley style compensator or updating to the Centa with maybe Phil's pucks, but now would be the time to do upgrade to the Centa. I know it's a LOT of money, but no more greasing and out of sight out of mind mentality with the Centa unit. Just drive now and be happy! smile

Dan