Benefit of changing out stock drivers?

[klarkkentster]

So...there is a small chance I may be getting a new sled soon. I'm really wanting to get a 155 and stuff a 163 track under it. Even if I stick with the same pitch track - is there any benefit to upgrade drivers? If upgrading drivers is the way to go - suggestions please on track and driver? PNW riding off trail.

 

[akmclean]

Whatever you do, don't go with the Polaris 3.5 pitch six tooth driver unless you want a ratcheting pile of junk. If I was going to pick a set up and money wasn't an issue I would go Avid extroverts.

 

[sledhedXP]

I would stick with the same pitch and drivers, simpler, less costly... if you go boost then aftermarket extroverts and antistab and maybe a tougher track might be worth the investment. If a 2.86 pitch, I recommend the Camso Extreme 9105M 2.5" 9ueay, you give up 0.1 LOL) so much rougher of a track it will outlast multiple Polaris tracks in general.

 

[xpspenziv]

On my 21-850-165. While breaking it in it ratcheted a couple times one day. I tightened it up a little more and it did it again. I'm also getting quite a vibration around 20 mph. The track is to tight for my liking. I bought avid extrovert drivers. I haven't had a chance to ride it since I put the anti ratchet drivers and mtntk bullet anti stab kit on.

 

[diamonddave]

Do you have a pic Randy?

 

[madmax]

yes there is a big advantage to aftermarket drivers. The stock drivers do not have big enough extroverts to not ratchet without running the track super tight. The avid extroverts are much larger and grip the track much better without ratcheting. If you have boost its even worse with stock drivers.

 

[fredw]

yes there is a big advantage to aftermarket drivers. The stock drivers do not have big enough extroverts to not ratchet without running the track super tight. The avid extroverts are much larger and grip the track much better without ratcheting. If you have boost its even worse with stock drivers.

Don’t give our advantages away


Sent from my iPhone using Tapatalk

 

[Teth-Air]

I would also mention PowderFreaks in Canada make nice drivers. I am thinking of buying them for my 165 although if the track is tight it does not ratchet with the stock drivers. I hate the vibration of the stock drivers at slow speeds. My 174 does not do that.

 

[turboless terry]

What is the difference between doo drivers and polaris? Never had any trouble with the 850 doo. Only one day on the 165 kaos so don't know if any problems yet.

 

[Sheetmetalfab]

What is the difference between doo drivers and polaris? Never had any trouble with the 850 doo. Only one day on the 165 kaos so don't know if any problems yet.

Night and day.

Polaris drivers slip on the track.

Skidoo drivers slip on the shaft.

 

[AdrenalineAddict]

There have been a few folks having some issues with the 21's new track pitch. I was out a couple days ago pulling some extremely steep big traction pulls with a fella running a 155 Khaos. He ratcheted badly at the bottom of the slope when he mashed the throttle, we tightened his track to the point where we started compressing the suspension and couldn't get it to stop. When he transitioned from the flat to the slope and compressed his suspension it would ratchet, after that it was fine. It is starting to look like avids are going to be required with the new pitch.

 

[mountaintop]

Finally had a good snow day. Any off/on throttle situation or soft/ hard snow transition on an incline with heavy throttle and mine ratchets like crazy. Belt drive or track has had a whirring noise and somewhat of a vibration since day one. Pulls like crazy compared to my 17 800 155. Have about 12 hours on the sled. Love / hate relationship thus far. 2021 Pro 850 155 QD2 2.75.

 

[Sheetmetalfab]

There have been a few folks having some issues with the 21's new track pitch. I was out a couple days ago pulling some extremely steep big traction pulls with a fella running a 155 Khaos. He ratcheted badly at the bottom of the slope when he mashed the throttle, we tightened his track to the point where we started compressing the suspension and couldn't get it to stop. When he transitioned from the flat to the slope and compressed his suspension it would ratchet, after that it was fine. It is starting to look like avids are going to be required with the new pitch.

Local shop has been putting avids and anti stabs in sleds like crazy.

Broken shafts from ratcheting galore.

 

[kanedog]

I have bought both Avids, stock and Powder Freaks drivers. Some drivers will vibrate.
I now use only Powder Freaks.

 

[shawkins]

Once they start ratcheting you better plan on changing them out to Avids or something else or you will destroy the track. I have personally installed many Avid kits and not had any issues.

 

[kidwoo]

Since you're planning on buying a new track, changing pitch isn't a big deal. I'll second what everyone else has said, good extrovert drivers allow you to run your track a little looser (not loose, just looser than what polaris drivers require). I did mine before I even rode my sled just based on watching buddies for years have all the problems listed in this thread. Glad I did.

I just stuck the 'cat style' avid 3" pitch ones an an aluminum drive shaft, changed my 155 2.6 to a 163 2.7.

Next time I have the track off I'm going to file down the edges on the avids. They're a little sharp and I think do put some wear on the track. Nothing like ratcheting does though.

 

[kylant]

I have Avid center drive 6 tooth, 3.5 pitch drivers on a steel shaft. series 8 165 track.
I do not have any ratcheting, but I do have a pronounced track shift/thunk when on and off the throttle.
when I stop, the track shifts to the coast side of the drivers pretty easily.
this is running the track pretty tight. 1/2" deflection at 10lbs

 

[Teth-Air]

I have Avid center drive 6 tooth, 3.5 pitch drivers on a steel shaft. series 8 165 track.
I do not have any ratcheting, but I do have a pronounced track shift/thunk when on and off the throttle.
when I stop, the track shifts to the coast side of the drivers pretty easily.
this is running the track pretty tight. 1/2" deflection at 10lbs

So that's what I am hearing with stock drivers?

 

[akmclean]

I have the same set up now with the steel shaft and avid center port drivers after breaking my driveshaft, except with a 155. I feel like I can run my track at about the same tension as with my older 2.86 series 7 tracks on stock drivers.

It does clunk on takeoff from the drivers not being engaged in the track nubs all the time. My biggest complaint though about this track is the vibration. Its absurd how much more it vibrates and makes noise compared to the series 7. It does perform noticeably better though when it comes to deep snow.

 

[Sheetmetalfab]

I have the same set up now with the steel shaft and avid center port drivers after breaking my driveshaft, except with a 155. I feel like I can run my track at about the same tension as with my older 2.86 series 7 tracks on stock drivers.

It does clunk on takeoff from the drivers not being engaged in the track nubs all the time. My biggest complaint though about this track is the vibration. Its absurd how much more it vibrates and makes noise compared to the series 7. It does perform noticeably better though when it comes to deep snow.

You mentioned “2.86 pitch” and “series 7”

Did you mean “series 6”?

(Series 7 is 3” pitch)