Avid/Polaris drivers

[SRXSRULE]

Talking about drivers, has anyone tryed the avid 7 tooth centre driver, the one were you don't half to cut the rails and had good success?

Yep. Ive ran them on 3 sleds. No issues.

 

[nibrandon]

So, if I am reading this right, stock polaris 2.86 7 tooth drivers (QD sled) work fine on 3.0 pitch tracks, and as such don't require aftermarket drivers to run a 3.0 track, just the removal of the center driver. That being the case, I would also assume you don't necessarily need an anti stab kit, correct, since you aren't changing the driver to skid geometry or angle? So essentially I could throw a 3.0 track on my sled (2.6 QD) with no other new parts? Does that sound like the correct line of thought?

 

[sumtinwong]

the way im understanding is yes but I don't think you need to remove the center driver they were referring to avid center drivers VS the avid that run on the outer edge and require a anti stab kit

 

[ullose272]

So, if I am reading this right, stock polaris 2.86 7 tooth drivers (QD sled) work fine on 3.0 pitch tracks, and as such don't require aftermarket drivers to run a 3.0 track, just the removal of the center driver. That being the case, I would also assume you don't necessarily need an anti stab kit, correct, since you aren't changing the driver to skid geometry or angle? So essentially I could throw a 3.0 track on my sled (2.6 QD) with no other new parts? Does that sound like the correct line of thought?

or get a center punched track and leave in the enter driver

 

[nibrandon]

That makes the conversion to a 3.0 track about $350 less. Definitely will keep my eye out for a good track deal now.

 

[Sage Crusher]

Tony-
I will give you a shout in the morning.. I have some options we can discuss.

 

[TRS]

Thanks Joe

 

[ullose272]

Any update one this?


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[polarisperformance]

Same thing with polaris 2.86 pitch driver on stock 2.86 track . Only the first tooth is in contact.

 

[polarisperformance]

Dave,
I’ll see if I can get a seven tooth Polaris to compare. The 2.86 in the pic is an 8 tooth.

Rough measuring, Avid 3” 7 tooth circumference is 19 7/8”
Polaris 3” 7 tooth circumference is 20 7/8”

The 7 tooth polaris 2.86 driver is exactly 19.88" circumference.

 

[ullose272]

How does the polaris 7T 2.86 drivers match up with a 3" pitch track is what im wondering

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[Spaarky]

Original post has pic of Polaris 2.86 drivers on 3” track.

 

[Sheetmetalfab]

Original post has pic of Polaris 2.86 drivers on 3” track.

But they are 8tooth..........

 

[ullose272]

But they are 8tooth..........

This

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[Spaarky]

Bet you a cheeseburger they fit the same.

 

[ullose272]

Looks like im not going to worry about drivers when i do a 3” pitch track next year

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[kgra]

Just a heads up.

Tracks stretch under load there for I would think if all teeth are equally touching before the stretch that as the track stretches that it won’t drop all the way down into the driver and the track would climb out of the driver and skip under heavy loads. May not be a problem on stock sleds but I bet it will be on turboed sleds. Engineers have been designing drivers to have slightly different pitch then the track pitch it’s desgned for to compensate for stretch.

 

[TRS]

As a track stretch’s it will move the following driver lug further away from a track lug. With that said a driver that contacts track lugs would be crucial. Engineer designs don’t always work in the real world, as we have witnessed again of late.

Let’s ask Indy Dan about his drivers. They are fast.

 

[ullose272]

Well if the diameter of the polaris 7T 2.86 and the avid 7T 3 are the same size, or the polaris even being slightly bigger as indicated above then it shouldnt be an issue

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[TRIPLESWILLNEVERDIE!]

If anyone can confirm 3" pitch track on 8 tooth 2.86" pitch Avid drivers will work let me know.
I know a 3" pitch will work on the stock 8t 2.86" pitch polaris drivers but the avid driver is a completely different animal and I dont wanna be the guinea pig.