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  #41  
Old 09-04-2019, 11:27 AM
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I pulled the wet clutch when I removed the engine from the shaller kart ( yes it was a pay and ride kart) and installed it on the dingo for a short time, it has a 1" standard shaft with no splines. If there is a CC that will stand up to the power it would be a super simple fix.
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  #42  
Old 09-04-2019, 01:31 PM
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www.gopowersports.com has 1" shaft clutches.
I think they're about $50.
As for holding up to the power, it should be just fine.
Centrifugal clutches can handle a LOT of power since they're so simple. TCs are a little less forgiving since they're more complex.
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  #43  
Old 09-04-2019, 07:00 PM
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Looks like they are more like $80, might take a little longer, but I'll have room to do it closer to "the right way."
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  #44  
Old 09-14-2019, 11:43 PM
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I just got the CC in, only one I could find was a 14 tooth, so with the gx270, no governor, 18" tires I have two choices for axle sprocket, I have a 54 tooth, and if I didn't miss count a 65 tooth, which is less likely to burn up the clutch and perform well with a 150 pound rider?
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  #45  
Old 09-15-2019, 06:38 AM
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Yup, go for the bigger one.
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  #46  
Old 09-15-2019, 07:11 AM
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That's what I was figuring, hopefully I can get it off the old rusty axle in one piece.
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  #47  
Old 09-15-2019, 08:27 AM
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I counted the teeth on the bigger sprocket, it's a 68 tooth. When I ran the calculator I did 18" tire, 4000 rpm, 14 tooth and 68 tooth for an approximate top speed of 45 mph, I don't think it will burn rubber, but I feel like acceleration would be decent without getting the clutch too hot, am I on the right track? I admit, I never truely understood ratios clearly.
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  #48  
Old 09-15-2019, 03:30 PM
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You should lower the ratio. That will cause premature clutch wear, and that's not good on an $80 clutch.
Your options are jackshaft, bigger sprocket, or smaller wheels.
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Old 09-15-2019, 04:38 PM
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Quote:
Originally Posted by JTSpeedDemon View Post
You should lower the ratio. That will cause premature clutch wear, and that's not good on an $80 clutch.
Your options are jackshaft, bigger sprocket, or smaller wheels.
I have a jackshaft sitting, it has 9 tooth sprockets on it, would that help any? I don't really understand what they do exactly either.

---------- Post added at 04:38 PM ---------- Previous post was at 03:54 PM ----------

I'm getting 4.86:1 according to the calculator weather I use the jackshaft or not, I believe I read somewhere on the forum the general goal is 6:1, doesn't that mean my ratio is already on the low geared end of the spectrum?
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  #50  
Old 09-15-2019, 04:41 PM
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Nonononono....
Low means the drive wheel(s) are spinning slower than other gearings in relation to the engine, with more torque.
High means the drive wheel(s) are spinning faster than other gearings in relation to the engine, with less torque.
That's the best I could explain it. But, 6 to 1 (6/1) means the engine is spinning 6 times to turn the wheel once, and 4.86/1 means the engine is spinning 4.86 times to turn the wheel once.

6/1 is lower than 4.86/1.

To lower the gear ratio with a jackshaft you need a bigger input sprocket and a smaller output sprocket. Someone here can help you with the specifics.
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Old 09-15-2019, 04:53 PM
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So I should be looking at like an 80 tooth sprocket if I don't want a jackshaft? I may just put it together with the 68 tooth for now until I have the cash for a larger one and keep the driving to a minimum, as well as take it easy. I'm not sure I have the space to do a jackshaft, everything is already super tight, but a larger sprocket should squeeze in ok, I'll get a few pictures in a bit so you can see the space issues.
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  #52  
Old 09-15-2019, 04:54 PM
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5.7143 would be the gear ratio with the 80T sprocket. With 18" tires that's not good, but better than the 68T.
You really need a jackshaft, unless you want pay a LOT for clutches!
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Old 09-15-2019, 05:40 PM
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Ok, 14t clutch, 14t in for jackshafts and 9t out with the 68t gives me a 7.5:1, that would make it so I only need a 14t to go on the jackshaft and more chain. That should be about where I need to be?
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  #54  
Old 09-16-2019, 07:27 AM
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Should work.
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  #55  
Old 09-29-2019, 04:53 AM
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Need to keep my thread alive. I've got everything laid out to build the jackshaft, and need to finish steering, however time hasn't been on my side lately, my younger brother blew up the engine in his car, so I've been using my spare time replacing it. Another weekend or two and I'll get back to work and get some pictures posted.
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