Got me a new hog today...

Unconventional said

Compliments of Comet Kart sales

#35 Chain Pitch - 3/8" Pin Measurement Center to Center (35 Regular Chain is Narrow with no space between the roller and side plate, .390") (35 Space Chain is wider with space between the roller and side plate, .470", used mainly in racing applications)

#219 Chain Pitch - .300" Pin Measurement Center to Center

#40 Chain Pitch - 1/2" Pin Measurement Center to Center, Width .320" (Wider than #420 Chain)

#420 Chain Pitch - 1/2" Pin Measurement Center to Center, Width .250" (Skinnier than #40 Chain)

#428 Chain Pitch - 1/2" Pin Measurement Center to Center, Width .320" (428 Chain is the high end shifter kart chain)

Click to expand...

So my thinking is I have a 9 on the jackshaft and a 40 on the wheel. Which is about a 1 to 4 ratio.. let's say you like to have a 1 to 6 ratio generally. Which would mean a 60 tooth on the wheel...
Soooo, like you said having a jackshaft gives me an easier option to put a larger sprocket on the drive part of the jackshaft on the driven side. So instead of a 10 I believe on the clutch to a 13 I'm going to buy a 17 to replace the 13 on the jackshaft and a 3 foot piece of number 35 chain.. I'm hoping the extra 40s will make the extra 33% that I need? And if I buy a 3-foot piece of chain it will be way more than enough and I'll be able to cut it down to what I need. The Jack shaft sprocket in the chain are a $22 investment LOL.. I can't get the sprocket too big in that area has it may start hitting the frame...