Secret_weapon

Hi

What is the difference between 64 pitch pinions and 48?
What is better?and where is it better for:carpet or asphalt?

ALBERTO

iTrader: (23)

64 better for carpet, it allowes you to adjust for rollout more accurate cause the teeth are finer. 48 better for outdoors less suseptable to striping, teeth are stronger

Secret_weapon

thanks alot

BrainTeased

iTrader: (4)

im abit confused on this.

when you say 64 pitch you can fine tune your ratio/rollout is this because the gears are smaller therefore you can fit alot more sizes giving you a wide range of spurs to use?

or is there a different formula of working out FDR?

my understanding is that if

48 pitch : 70T spur divide 20T pinion multiply by internal ratio of vehicle = FDR
64 pitch : 70T spur divide 20T pinion multiply by internal ratio of vehicle = FDR

would give you the same number.

Joe B

iTrader: (1)

Yes , more sizes inbetween

BrainTeased

iTrader: (4)

thanks for clearing that up joe b was always curious why people say 64 pitch you could fine tune ratios.

ChadCapece

To have the same FDR and near equal sized spur gears, you would need a 70 48p to a 96 64p spur. A 70 spur would be quarter sized b/c the teeth are much smaller. With a 70-25 tooth 48p combo, each pinion change makes the FDR change by about 0.3 and if your running 96-34 tooth 64p combo, each change makes about a .19 FDR change.