leigh18

What difference does the pinion make?

does more teeth mean more top end?

Ta....

20 SMOKE

iTrader: (103)

yes

MaTt 93

iTrader: (8)

yep
higher = more top speed but the engine will get hot
lower = more torque and cooler engine

hyperguy

iTrader: (22)

youve got to find the happy medium with speed and heat of the motor. what are you currenty geared at?

thukid

go to www.gearchart.com. It'll give you charts for your end ratios.

Pinion: more teeth= more speed, less torque.
less teeth= less speed, more torque.

Spur: less teeth= more speed, less torque.
more teeth= less speed, more torque.

bprocket

iTrader: (2)

The way I think about gearing and the effect it has on the motor, spead and torque is to liken it to gearing a bicycle. The bigger the crank sproket the harder the rider has to work to get the bike going, but once he gets going he can get a really high top speed. In other words, little torque at the wheel but better top speed. The opposite happens when the front sproket gets smaller.

Another way to think about it in very simple terms is the closer your gear ration gets to zero, the higher the top end and the lower the torque. As the gear ratio gets larger the top end decreases and torque increases.

With respect to the motor temp, the harder the motor has to work (lower gear ratio) the more current it draws and the higher the operating temp.

Of course, if I'm blowing steam in the wrong places, please correct me.