Ok, I have heard that getting a lightweight flywheel will let the rpm's drop faster in between gears as well as reach higher rpm quicker.

I was wondering if the same goes with lightweight rims, Does getting lightweight rims let the rpm drop quicker in between gears also? And how about getting a lightweight driveshaft, or knife edging a crank?

I know these all reduce rotational mass, but do they ALL let the rpm's drop quicker in between gears or is it just the flywheel?

Im specifically looking into the knife edged crank but info on all of the things posted are a plus.

Thanks a lot.

Only the parts connected to the crankshaft with the clutch disengaged will affect RPM's between shifts. Crank, rods, pistons, cams, cam gears, flywheel, pressure plate, etc. Wheels, driveshaft, axles, etc will have no effect on RPM's between gears, but could help with acceleration, however, I doubt you would notice much of a difference unless you made a lot of changes at once.

GVR4592 said:

Only the parts connected to the crankshaft with the clutch disengaged will affect RPM's between shifts. Crank, rods, pistons, cams, cam gears, flywheel, pressure plate, etc. Wheels, driveshaft, axles, etc will have no effect on RPM's between gears, but could help with acceleration, however, I doubt you would notice much of a difference unless you made a lot of changes at once.

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Yeah, thats what I thought.... I figured the momentum of the car it's self will keep the driveshaft and wheels going without any rpm drop....

I think im leaning towards lightweight rims, lightweight driveshaft and knife edge crank.......You mentioned axles in there, do you know of any lightweight ones??

Thanks