Key starts

[J_Walker]

Try this:

6/8ths of an inch.

 

[B man]

so 5/8''.

 

[Russ2251]

6/8ths of an inch.

3/4" would be correct.
Now, measure distance between pins on chain...center to center.

 

[J_Walker]

3/4" would be correct.
Now, measure distance between pins on chain...center to center.

on the physical chain? or the spiky things.

 

[B man]

http://cgi.ebay.com/ebaymotors/NIP-...pt=Go_Karts&hash=item19c4884378#ht_500wt_1182

would this be the right clutch?

 

[B man]

the chain.

 

[J_Walker]

its like 1/2 an inch. about give or take a few millimeters.

 

[Russ2251]

Pins on chain.

 

[Russ2251]

Please use a caliper and not a ruler. Metric will not work.
Center to center.

 

[J_Walker]

I Don't own a caliper, as far as I know. ill check for it in the morning, im going to bed.

 

[Russ2251]

Appears to be badly worn #35 chain sprocket.

 

[B man]

You were suppose to dumb it down, not make it sound scarier... How do I figure out the chain size/pitch? what is a PTO/output shaft?

I Just read that the 0 on the clutch means its a #41 chain pitch. theres one answer

isnt it #41?

 

[jrmints1415]

Here is how i see it. Before i get to the clutch let me address your carb throttle question. I believe the left valve black thing you see is the butterfly for the throttle. The one on the right is the choke. Before you disassembled where was your choke lever attached?

Now for the clutch. Probably the most popular clutch is a 3/4 inch diameter bore, 10 tooth, and 40/41 chain. If you want to make sure you need to measure the distance from pin to pin on your chain. I disagree with Russ when he said you cant use a ruler. If you are pretty good at using one it will work fine but you need and exact measurement. I do agree that a caliper would be far better but you can use a ruler.

Max Torque Clutch
3/4
10 tooth
40/41 chain

THIS IS A VERY STANDARD CLUTCH!!

This is my guess and im about %80 sure... but measure just to be safe.

 

[bighead]

What wrong with your old clutch?

 

[anderkart]

Dang this threads more entertaining than watching steven hawking teaching a kid his abc's

 

[Russ2251]

Probably the most popular clutch is a 3/4 inch diameter bore, 10 tooth, and 40/41 chain.

#35 is far more common.

I disagree with Russ when he said you cant use a ruler

What??? He used a ruler and came up with 6/8" and could not figure out that this is 3/4".

What wrong with your old clutch?

Check it again. Don't those teeth look a little worn?

 

[B man]

he said 6/8''. so i thought he might have acedentivly messed up and its realy 5/8''.
just wanting him to not get the wrong clutch.

 

[Doc Sprocket]

Dang this threads more entertaining than watching steven hawking teaching a kid his abc's

 

[jrmints1415]

#35 is far more common.
What??? He used a ruler and came up with 6/8" and could not figure out that this is 3/4".
Check it again. Don't those teeth look a little worn?

First off #35 pitch chain IS more common however if it was a 12 tooth i could see that, however it is a ten tooth clutch so 40/41 would be more common for that clutch. Secondly, i would rather take my time using a ruler and actually do it right rather than going to the store and buying a caliper. Im pretty sure ihe would be able to make one measurement or having someone else do it. I do agree with the worn teeth though.

 

[Russ2251]

Im pretty sure ihe would be able to make one measurement....

Obviously not.