what does changing the number of teeth on the front and rear sprocket on my kx85 do ?? if i go fewer or more ?

Answer 1

if you go more in the front it will give you more speed and less acceleration. if you go less youll have less speed but more acceleration. its opposite in the rear. more teeth in the rear will give you more acceleration and less speed and less will make the bike faster in speed and slower in acceleration.

Answer 2

id love to have a buck for every kid that's asked me this question.
first off as others have said it raises and lowers the gearing, this is usually done when racing motocross depending on the speed one needs to get up to on a given track, if its a tight track then you lower the ratios by putting smaller on front and larger on back so you are quicker out of the corners and especially with a 2 stoke keeping it in the power band, if it is a longer track like desert racers you go the opposite that is larger on front and smaller on the back, you lose the quickness out of the corners but have a better top speed, you can work out your ratios by dividing the number of teeth on rear sprocket by the number of teeth on the front sprocket

Answer 3

What are you trying to achieve, more speed or more power?

More teeth in the front sprocket increases top speed but drops torque/acceleration. More teeth on the rear sprocket increases torque/accelleration but drops top speed.

Its generally a lot easier to change the rear sprocket than the front one.

Answer 4

the closer the ratio (number of teeth at the front:no teeth at the back), the faster

Answer 5

If you go fewer on the front and more on the back it makes it higher speed and just the opposite the other way.

Answer 6

If you want to go faster, add more teeth.

Answer 7

what viper and kc said... jenw is an idiot