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Conquer 280

BIG JOHN

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8 tooth X 3" pitch = 24"
7 tooth X 3.5 pitch = 24.5"
So it looks like if you have enough room to run an 8 tooth 3" pitch drive sproket on your drive shaft you'd be able to run a 7 tooth 3.5" drive sproket.
Right???
If camso would make a longer track than 165" with 3.5" pitch I'd buy it and run it on my turbo charged sled.
Any chance of this happening?

I ran a 8/2.86 not a 8/3"-BJ
 

d1100t

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Drivers.

Who makes an 8tooth driver that is 24" in circumference?

GS6

I was just trying to say if your running a 8 tooth 3" pitch driver now wouldn't you be able to run a 7 tooth 3.5" pitch driver???
Maybe not but I'd sure like to know???
I'd like to run a 3.5" pitch track with a tack length of 171 or 175 or 178 inches long on my turbo charged mountain cat.
I just measured the cat 8 tooth 3" pitch driver I have on my shop bench.
It is about 7.25 inches across and about 23.25 inches around.
 

1500psi

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The "anti ratchet tooth" does not drive the track, the wider inner wheels/lugs doo...

The anti ratchet is just there in case the track is set too loose...


That's not true John unless you are trying to describe how poorly a stock ski doo driver performs last year and I don't think you are.
 

summ8rmk

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I was just trying to say if your running a 8 tooth 3" pitch driver now wouldn't you be able to run a 7 tooth 3.5" pitch driver???
Maybe not but I'd sure like to know???
I'd like to run a 3.5" pitch track with a tack length of 171 or 175 or 178 inches long on my turbo charged mountain cat.
I just measured the cat 8 tooth 3" pitch driver I have on my shop bench.
It is about 7.25 inches across and about 23.25 inches around.

A circle with a diameter of 7.25 would have a circumference of ~22.77.
And with a circumference of 23.25 the diameter would be ~7.4.
I am a little confused?

GS6
 

d1100t

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Divers

A circle with a diameter of 7.25 would have a circumference of ~22.77.
And with a circumference of 23.25 the diameter would be ~7.4.
I am a little confused?

GS6

I'm not arguing with you.
I'm just relaying what my tape measure is showing me because I happen to have a cat driver out of my sled to measure.
I did say it was about, It's not the easiest thing to measure with a tape measure. I could easily be out a tiny bit.

Someday I'm hoping to be able to run a 3.5" pitch track with 7 tooth drivers and a 17? Inch long track on my mountain cat.
I'm Hopping camso makes a 3.5 pitch track that's longer than 170 inches.
Maybe it's wishful thinking but I'd like to be able to try this someday.
 
Last edited:

summ8rmk

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Both the Mountain cat and King cat should have plenty of room for a 7tooth 3.5 pitch driver. Now u need to find a company to make some.
170's length will be here soon i am sure.

GS6
 

rulonjj

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Is it always better to have a bigger driver? It seems that a smaller driver would have less inertia, and so it would spool quicker. I just don't see why having a bigger driver is better, unless I am missing something.
 

summ8rmk

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Smaller diameter will have a tighter bend in the track, not sure how much that affects rotation?

GS6
 

rulonjj

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Smaller diameter will have a tighter bend in the track, not sure how much that affects rotation?

GS6

True. I'm curious if you actually lose power witha smaller radius. A track sitting on the floor bends pretty tight under its own weight.
 

mtncat1

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one other thing you need to consider is centrifugal force pulling the track away from the drivers . that force will make the track feel stiffer. so larger drive less track tension but higher final drive ratio, smaller drivers need more track tension and are harder to bend around the driver but lower ratio and more leverage so pick your poison .
 

1500psi

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True. I'm curious if you actually lose power witha smaller radius. A track sitting on the floor bends pretty tight under its own weight.

You lose power because you have to have the track so tight or it ratchets so you lose speed but it's mostly important on stock sled since they don't make that much power to begin with so every few adds up.
 

summ8rmk

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The real question is, will a 10% reduction or increase in driver size make any difference?
If so, how much?
Forget about number of 'teeth', u don't gain any load bearing contact from 7-8.

GS6
 
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