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Old 03-25-2020, 07:18 PM
JonathanEngr JonathanEngr is offline
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Default What chain do I have?

Hi, all. It's been a while. I never found parts for the rear end of my kart, so I'm going to make a new rear section, motor mount and axle. Before I get started, and I know this is such a basic question, but how do I determine which chain I have? I assume I'll want to stick with the same tooth # as my CVT and but the matching sprocket for my rear axle. Let me know what measurements, pics, etc., I need to upload to make this determination. Thanks so much for your help!
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Old 03-26-2020, 04:38 AM
jeffone jeffone is offline
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i think you've been a diy member long enough to know that you should now how to search the internet to find that info yourself. if not you don't need a chain you need to learn how to surf.
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Old 03-26-2020, 05:44 AM
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itsid itsid is offline
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*cough*
tough times these days... ain't they jeff?

Now...
just measure the chain pitch
(use calipers to measure the distance of two adjacent pins protruding the side plate)
that'd be either 1/2" or 3/8"

if three eights you have a #35 chain

if half inch you have either #40, #41 or 420 chain
and we need to go on...
next measure the internal width of the chain (distance between inner most side plates)
if that's 0.3" (or about 8mm) it's #40 chain

if it's only .25" (or closer to 6mm) it's either #41 or 420

And now the best part..

#41 and 420 are fully compatible there is no difference in roller diameter or width or any outer dimension.
(420 is just waaaay stronger thanks to beefier pins and slightly beefier outer plates)

'sid
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Old 03-26-2020, 07:53 AM
Karttekk Karttekk is offline
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See if this helps: https://www.gokartsupply.com/chain.htm
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Old 03-26-2020, 11:33 AM
jeffone jeffone is offline
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sorry
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Old 03-26-2020, 11:50 AM
JonathanEngr JonathanEngr is offline
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Thanks!!! I'll check the measurements in a bit. I just want to make sure and get this right before ordering parts for a new rear shaft.

Jeff--no problem. You can redeem yourself when I start asking questions about piecing together the new shaft parts :-)
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