Question about " flywheel lapping "

[JBRoc01blaster]

So I was reading an old thread that was talkin about flywheel lapping and I was thinking about possibly doin it myself. Before I go doing somethin for no reason, I first wanted to know the reasons for, and or the benefits of lapping your flywheel. I know its not like lapping your head to increase compression or to make it perfectly flat to prevent possible air leaks. So is the purpose of lapping your flywheel to simply reduce weight, or is this done only when the inside edges/surface is uneven ? ANY thoughts or answers would be much appreciated, the more the better !

 

[Awk08]

the keyway on the crankshaft is only to set the timing, the real force that holds the flywheel in place is the interference fit of the tapers between the flywheel and shaft, and the nut torqued to spec
lapping them to a perfect taper fit insures the flywheel wont slip and shear the key

 

[Blaaster]

If your flywheel has never spun, there should be no reason why you need to lap it.

If the mating surfaces are in good condition and the flywheel was hard to remove there is no need to lap.

 

[JBRoc01blaster]

Gotcha ... I just googled it and read just about the same thing you just said haha ( shoulda hopped on Google before I asked that ) Thanks for the help once again bro ! By the way I finally fixed my reed problem ... I took my vforce 3's out, ordered a stock cage and some vito's carbon flex reeds and now I don't get stuck in the middle of the woods anymore haha. It kinda sucks cause I liked the vforce 3's more but I wanna send my flywheel to Ken to get lightened, and im gonna buy a dremel and all the goodies needed to port and polish my cylinder so I figured I'd save a little money and not buy more vf3's. You think I could Moto Tassinari to warranty them for me ? The clip that the reed cage snaps into seems to be warn out so it doesn't hold the inner cage in securely like its suppose to anymore