HELP!!! BAJA DN 150 Predator 420cc Engine Swap - Need Help and Advice

[rip_vw32]

From ground to rim = 6 inches
From ground to axle = 11 inches

 

[mckutzy]

ok... I think you misunderstood....Tire OD(outside diameter) is what we need to know for optimized gear ratio..

So from the top of the tire to the ground on the rear axle... is 22"OD?????

 

[Hoser]

Your going to have to measure the sprocket tooth to tooth to confirm what exactly type of chain you have...

As far as I can see... its a #530 type chain..... which is a motorcycle rated type chain....
This limits you for what you can use, as this is used with a machine that has a transmission.
This allows it to be used with a broad range of ratios... in your case the CVT only goes so far...
So this limits you to what you can use.... so in our case(here in DIYGK and other gokart/buggies) we typically have to use the #40/41 and #35 to get better ratios with out sacrificing space....
A #530, 72t is 14.32"OD, A #35, 72t 8.810"OD for example...

So that basically why we use industrial chain and sprockets for our application, also as its more common and less specialized

I think we're missing a key point the 72 tooth 530 sprocket would be significantly lower because the diameter is nearly double tooth count will only represent a change in ratio if it's the same type of chain the diameter is the ratio

 

[rip_vw32]

Okay guys - apparently 'universal' doesn't mean UNIVERSAL...

My axle sprocket came today and I tried to mount it, but the center hole is about 1/8" too small, and the bolt patterns (there are two) on the sprocket don't line up... so I got the micrometer out and here is what I have:

4x80mm bolt pattern
58mm center hole

I need a 60 tooth sprocket, for a #41 chain... Any ideas????