Sprockets

[Atlbanshee]

Need some help .

 

Currently im running 19-39 On a 421 cub 1/8 mile

With 180 lbs jokey

Bike is slow but runs good thru all the gears

 

If a put a 36 or 34 in back it will help or will make it slower ?

 

 

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[Bennett131]

That would give you more top speed, I don't think you're going to fit that small of a sprocket on the back though. What kind of hub are you running? If it's a stock hub I think the smallest you can go is 38 or 39 tooth.

[Atlbanshee]

I bought a Honda hub that way i can go with a36 or smaller

 

 

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[Bennett131]

You have some pretty serious gearing already. What is your tire size in the rear?

[Atlbanshee]

20s

 

 

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[Bennett131]

With 20 inch tires it should hit just under 100 mph (if internal gears are stock) I'd say you have another issuie.

[Atlbanshee]

Top speed now is at 96 in 1/8

 

 

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[sheerider11]

Change them.

But slow is a vague word. Acceleration slow? Top speed slow?

Clutch set up? Tire pressure? Bike set up?

There's a few guys here that take drag racing serious. Maybe you can get some info from them.

[Atlbanshee]

Top speed is slow

 

 

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[Atlbanshee]

I have 2.86 ratio stock straight cut gears

 

 

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[Atlbanshee]

Thanks zillafreak & sheerider11

 

 

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[Bennett131]

So you're doing 115 in an 8th and that's slow?

[Bennett131]

So you're doing 115 in an 8th and that's slow?

Sorry I guess you said you were doing 96...I'd try going the other way with gearing. Maybe go up a few teeth in the rear.

[Atlbanshee]

Yes 96 top speed thats what it does now . I know it need to do around 104 whit stock chassis

 

 

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[Atlbanshee]

Really ? like 40 tooth

 

 

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