Phil,
The rotors are always balanced separately. They are replacement part so they cannot be balanced "with" other parts.
Swedewheeler, I've never seen a rotor welded to the splined hub like yours. And yes, I would say that the welding was not a good thing for the magnets.
This whole Harley style compensator setup the way MMC designed it is so bad, it's almost laughable. Like Phil said, grease in a spinning housing is not good. Harley's use the comp inside their primary chain drive and is lubed by primary oil flinging about. But in the more recent years with larger cubes and hp, the comps have worn out exceedingly fast. Harley went through about 4 generations in about three years. Baker Transmissions has even come out with their own comp to sell as Harley's is still a crap shoot if it lasts or not. The newer Harley primary covers have a web cast into the outer housing cover that directs a flow of oil into the center of the comp to better oil it. Harley's last version when used in a previous model year has a plastic glue in web that directs the oil just as the new cast in webs do.
My old '76 Harley Shovelhead 1200cc motor only puts out about 55 hp and that comp will last forever. So put 2L of displacement into the comp and all bets are off.
Something similar to the Centa or Krazy Horse coupling style is going to be the end all to the comp issue. I still say my Lovejoy idea that still allows for "some" wind up would work well without any moving parts other than an input shaft bolted to the outboard diameter and the output shaft to the inner bolts of the coupling.
Dap, I think it's time to invest in the new Centa with Phil's pucks and be happy to not have to shove grease into the housing anymore.
Good luck with your comp.
