Source for 5/8 jackshaft sprockets needed

Nashville Geoff

New Member
Jul 29, 2008
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My build is progressing along slowly, as time permits. I've just about rounded up all of the parts needed to complete it. I'm using a 3hp 2-stroke Briggs, rack mounted, with a centrifugal clutch, running to a jackshaft via a #35 chain. From the jackshaft to the dual freewheel hub, 415 chain. I ordered 12guage spokes from Stanton today, and the 5/8 jackshaft kit. The kit comes with 13 & 18 tooth, 35 pitch sprockets. I'm thinking that I need more that an 18 on the jackshaft, coming from the 11 tooth clutch... Using the Ratio Calculator, with the 18, and a ten feeding the final 50 tooth sprocket, nets me 37.8 mph @ 4000 rpm. I'd rather use a larger #35 sprocket on the jackshaft, and a larger 415 drive sprocket, too. I also need a couple feet of #35 chain & a masterlink. Any thoughts on ratios? Who has sprockets available? I'm anticipation having to change up a few times, to dial it in, especially after I get it on the road & start to modify the engine. Thanks for the input. Nashville Geoff
 
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Nashville Geoff

New Member
Jul 29, 2008
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0
Your Welcome

I'm glad to help a fellow DIY motor bicyclist!

How's the build going?
Z... The front suspension fork is on, the brakes converted to linear-pull type. I scrounged up some angle iron for the rear rack mount yesterday. I dropped off the Giant wheel, dual-freewheel hub, & 12 guage spokes to get laced today. The 3hp, 2-stroke Tecumseh motor showed up today, but it's going for another build- This one's going to have the Briggs 3hp 2-stroke. I hope to start builing the engine mount tonight, possibly. Cut, grind, weld, repeat... More to be revealed! Be safe, ~Nashville Geoff
 

Goat Herder

Gutter Rider
Apr 28, 2008
6,248
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N.M.
Looks pretty sweet looking forward to seeing the j shaft set up finished. Using a bike hub for a jack shaft cool!