Don't know if I need to buy a belt or something else.

go kart man

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I have a go-kart with a problem and I do not know how to fix it. Basically, I got a new Predator 212cc engine and when I drive the go-kart the belt will flap or tear up if I go a certain speed. Now I know I can go faster because the go-kart belt will start doing this at 10-15 MPH and the go-kart motor is supposed to go about 30-40 MPH. I am wondering if a torque converter will fix the problem but I think have one on there already. do you know what I may need to buy for my go-kart?
If you have any questions or need more photos let me know. My belt size is 203589/5959



IMG_20231019_131820.jpg

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Denny

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I would like to see the CVT with the belt removed? Are you using a Genuine Comet Belt? Mando is a quality belt also. Any other brand of belt is pure Chineseum junk and should not be used under any circumstances for any reason! Unless you like to throw away money. Go to the GoKart Supply website to learn how to measure for one and learn all about the CVT system.
Also what is the rear tire size and tooth count on both sprockets? 6:1 gear ratio is ideal.
 

BrownStainRacing

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Looks like a 30 series driver (small pulley) with a 40 series driven (big pulley).

If that's what you have, it will not work.

Take that belt off and get pics from top to bottom on both.

 

go kart man

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I would like to see the CVT with the belt removed? Are you using a Genuine Comet Belt? Mando is a quality belt also. Any other brand of belt is pure Chineseum junk and should not be used under any circumstances for any reason! Unless you like to throw away money. Go to the GoKart Supply website to learn how to measure for one and learn all about the CVT system.
Also what is the rear tire size and tooth count on both sprockets? 6:1 gear ratio is ideal.
No, it is not a comet belt here are some pictures
IMG_20231021_154615.jpgIMG_20231021_154607.jpg
 

go kart man

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Looks like a 30 series driver (small pulley) with a 40 series driven (big pulley).

If that's what you have, it will not work.

Take that belt off and get pics from top to bottom on both.

IMG_20231021_154607.jpg
 

BrownStainRacing

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Here is the picture
Yea that's a 40 series driven. See how its needs a v shaped belt.

The 30 series driver has a ALMOST flat side, on the inside sheave.

You need a 30 series driven to match the jackshaft.

I recommend a 7" 30 series driven, and you will need the correct length belt to match.

Read that link to learn how to measure for the correct belt.
 

Denny

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You have a problem there! You’re trying to use a 30 series drive CVT with a 20 or 40 series driven CVT. That don’t work. You need to either change the driven to a 30 series or change the drive to match the driven.
 

go kart man

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You have a problem there! You’re trying to use a 30 series drive CVT with a 20 or 40 series driven CVT. That don’t work. You need to either change the driven to a 30 series or change the drive to match the driven.
Ok, thanks,
could you send me a link to a 30 series driven so I can buy it also will I need to buy a new belt?
 

go kart man

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Yea that's a 40 series driven. See how its needs a v shaped belt.

The 30 series driver has a ALMOST flat side, on the inside sheave.

You need a 30 series driven to match the jackshaft.

I recommend a 7" 30 series driven, and you will need the correct length belt to match.

Read that link to learn how to measure for the correct belt.
How will I find the correct size belt?
 

Denny

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You have a problem there! You’re trying to use a 30 series drive CVT with a 20 or 40 series driven CVT. That don’t work. You need to either change the driven to a 30 series or change the drive to match the driven.
 

go kart man

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You have a problem there! You’re trying to use a 30 series drive CVT with a 20 or 40 series driven CVT. That don’t work. You need to either change the driven to a 30 series or change the drive to match the driven.
could you send me a link so I could buy it?
Do I just search up 30 series driven at go powersports?
 

Denny

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Go to the GoKart Supply web site and look up the CVT parts section it will tell you how to measure for belts and cross reference to the correct part number. Along with CVTs and parts.
 

BrownStainRacing

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How will I find the correct size belt?
Does this link not work for you???


Those washers you have stacked holding the driver on will bend eventually, you need the CORRECT thrust washer.

https://www.ebay.com/itm/3047123694...bfwvmiqrr-&var=&widget_ver=artemis&media=COPY
 

Denny

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Go Power is too expensive. Search on the Jungle Store site (Amazon) just remember to get a Genuine Comet or Mando belt!
 
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