Jackshaft re-gearing help

[Clayon]

I am re-gearing a jackshaft that is bolted to a honda clone on a baja heat/warrior. The clutch has a 10 tooth sprocket, that has a chain that connects it to a 20 tooth sprocket. The 20 tooth is on a shaft that spins a 10 tooth sprocket that drives the 50 tooth sprocket bolted to the rear wheel of the bike.

I am planning on changing the 10 tooth sprocket that drives the rear wheel to a 15 to gain some more speed. Would that work? or could anyone tell me what the best gearing setup would be? :shrug:

Or, has anybody ever re-geared the jackshaft on a baja heat/warrior?

 

[tlizard2]

That would definatly give you more speed. The stock ratio is 10 to 1. Regearing would give you 6.33 to 1.

 

[jprice]

Engine J/S In J/S Out Axel Final Ratio
10 16 15 50 5.33

 

[6racer]

where do you find a calc. for jackshafts speed and ratio

 

[SAFETYpin]

I like this one, Jackshaft Ratio Calculator