Gearing

[akblaster]

I was wondering what size sprockets i should put on my blaster for motocross, extended a arms, full dg exhaust, bored ten over, open air box

 

[Blaaster]

Depending on track, and tyre size.

With 18" tyres I use the following.

Slow and tight, 12:40 or 13:40

Fast and open 13:40 or 14:40

Good all round choice is 13:40, but bigger tyres= bigger front sprocket.

 

[blasty 95]

Get rid of that dg haha 13/38 does well

 

[zmaro]

Good all round choice is 13:40, but bigger tyres= bigger front sprocket.

Stock is 13/40, and that last statement doesn't make sense? If you get smaller than stock tires, we'll say 18", you would want to step up the front sprocket to 14T to try and counteract the much smaller tires.

More teeth in the front = higher gearing = higher top speed
Less teeth in the rear = higher gearing = higher top speed

Less teeth in the front = lower gearing = lower top speed (more acceleration)
More teeth in the rear = lower gearing = lower top speed (more acceleration)

Changing the front 1 tooth is approximately equivalent to changing the rear by 3 teeth.

I am currently running 18" tires and switched to 14/40 and will be switching again to 14/38 since it is still to low. Your wheel diameter is a HUGE factor in what gearing you decide.

 

[Quadrider10]

i run 18'' tires, and run 13/40 gearing. never use first.

 

[Blaaster]

bigger tyres= bigger front sprocket.

My bad, sorry.

Gotta get a new keyboard, I could have swore I typed, smaller front sprocket.

Better go get another beer!I:I

 

[akblaster]

thanks alot guys this helped alot