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 Post subject: CVT variator and clutch questions
PostPosted: Sun Mar 22, 2020 4:03 pm 
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Location: NC, USA
I pulled my clutch and variator apart for the first time today. Found out the roller weights are much larger in size and weight than I thought. I weighed one of the rollers and it was 20 grams. I'm trying to get some more low end torque out of the buggy so i assume i would need lighter weights. Currently when I'm driving on flat pavement im getting about 36 mph. It's a 250cc 2 seater Kandi. Everything is completely stock to the best of my knowledge. I'm running 25x10-12 rear tires and 25x8-12 front tires. The top speed on the road is with just me on it weighing about 140lbs. More weight or softer terrain diminishes tops speed and acceleration. I installed a cheap tach/hour meter and set it to 2 sparks/1 rotation. Best I could tell on other threads that's what I needed to do. At idle the tach says about 1200rpm and that seems right because any more throttle and the clutch engages. At my 36 mph top speed it's only reading about 4k rpm and that doesn't sound right.

My question is what should I do next for more power and torque and does it seem like I may already have any issues.

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 Post subject: Re: CVT variator and clutch questions
PostPosted: Sun Mar 22, 2020 4:47 pm 
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Joined: Wed Nov 28, 2007 2:21 am
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Location: Pacific NW
Go to 15gr roller weights or 17g slider w err ights

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09 Joyner SandViper 250
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 Post subject: Re: CVT variator and clutch questions
PostPosted: Sun Mar 22, 2020 7:42 pm 
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Location: NC, USA
Ok. I'm going to try to find the big kits with a bunch of sizes to figure out what works best. That will be my start point.
Shouldnt I be getting more rpms though?

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 Post subject: Re: CVT variator and clutch questions
PostPosted: Sun Mar 22, 2020 9:42 pm 
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Joined: Wed Nov 28, 2007 2:21 am
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Location: Pacific NW
The variator weights control how fast the CVT upshifts. The main contra spring on the clutch pulley controls how fast it downshifts. The three small springs on the clutch arms control engagement speed.

My preference is 17gr slider weights, red Malossi contra spring and stock clutch arm springs. This gives better pulling power and acceleration with same or better top speed.

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09 Joyner SandViper 250
57 VW Transport 1200 (Buggified)


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