2013 XM 163 geared down?

[Jonny Cash]

Thanks for the info. I will try it once and start the changes.

 

[Deano670]

Last years etecs with my clutching PLUS a primary shim kit with 163 x 2.5 tracks all ran 21/45 gearing. No pipe,no reeds just a can. Personally i think your waisting your money by installing a 3".

Deano

 

[maxwell]

Last years etecs with my clutching PLUS a primary shim kit with 163 x 2.5 tracks all ran 21/45 gearing. No pipe,no reeds just a can. Personally i think your waisting your money by installing a 3".

Deano

For climbing performance on a stock sled absolutely. It weighs to much and doesn't climb much if any better. Just more fun when moving slow through te trees and whatnot

 

[oler1234]

i am running the 23/49 in mine, 3" track, 2mm oversize rollers and pin weight. i can vouch that the gearing works in all conditions.

 

[tukernater]

i am running the 23/49 in mine, 3" track, 2mm oversize rollers and pin weight. i can vouch that the gearing works in all conditions.

I'm trying some of Deano670 tricks to real soon.I think 19-51 with a 40 degree helixs is very Low/slow combo need to speed things up to load the motor at least gear to 21-51 with stock 163 track.

 

[takethebounce]

i am running the 23/49 in mine, 3" track, 2mm oversize rollers and pin weight. i can vouch that the gearing works in all conditions.

But is that with 7 tooth drivers?


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[oler1234]

yes i am running 7th driver. 7th or not, as thegeneral brought up, it is only 8%.... that is not alot by anymeans.

23/49 (2.13) to 21/51 (2.42) is at 14% reduction. Add the 7th reduction on top of that it is 22%. seems like alot.

2.4 to 2.5 is where you would weant to be with a 8 or 9th driver... in my opinion.

By the way, this is my own setup not Deano's.... dont want anyone getting confused or false info.

 

[takethebounce]

Yeah I realize that.

That difference is a lot though. That is how you can run that gearing.

Try and run anything taller than 2.25 with the 7 tooth taken into consideration and your clutching won't maintain the track speed.

You would have to run a 25 to get the same ratios he is talking about.




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[shoppingcart111]

So since i'm going up to a 163 from a 154 on my 09, whats the ideal setup?

 

[takethebounce]

So since i'm going up to a 163 from a 154 on my 09, whats the ideal setup?

I believe everyone is in agreement that the stock gearing on the New 163's is too low.

Personally I would swap out the top gear to a 20 or 21 which would be the cheapest and easiest solution. Then adjust your clutching from there.



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[SUPERDUTY]

but going to a 21T with a 2.5 track load up the motor too much? How does the 21T on the longer pulls? Does the motor start to loose some torque with the 2.5 track?

 

[Caper11]

So has anyone tried a 20, 21t gear with the stock clutching on the xm yet?


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[mach123]

Well to me it seems like the guys that has went up in gearing also have changed out track,avids and so on, so it doesn't seem like anyone has 20/21 top gear and is all stock everywhere else..hmmmmmmmm Great Post

 

[thegeneral]

We're all running the 7 tooth avids with the 3" CE's. two of them with APP's clutching. 1 with 20/51 and 1 with 21/51
And I've got stock clutching with 20/51
Today will see if it pulls better than stock. Last trip in 2 feet of powder on a straight up climb it would hold 67 kph track speed


Thegeneral

 

[MoThEr TrUcKeR]

Hey general not to get off topic what camo 3" are you running? Did you manage to find an old style 3 or you runnin the new one?

 

[Caper11]

Nobody has done a gearing change on a stock xm yet, hummm lots of happy riders.


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[MoThEr TrUcKeR]

I tried a 20 top gear today just riding around home. In the little snow I found in the trees it seemed to like it. The track speed plained er out a little quicker imo. Gonna try a 21 tomorrow just to see how it feels too.

 

[tpollon2]

Hello Deano670
Can u tell me if you had to purchase a bigger chain to run 23/49 gearing? Stock was 21/49 correct?
thanks

After some testing im now also a fan of 23/49

 

[trench]

BRP keep gearing down to bandaid their inefficient clutch system, i think.. i like the 2.15/ 2.25 ratio and for boosted sleds i like 2.05 ish thats geared very low already..the sled is in way to low of a gear when cruising the trail to get anywhere!! reving too high i found.

The XM runs 19/52 ( 2.74 ) gearing? Poo runs 20/42 ( 2.1 ) maybe it's true that the Poo clutch squeezes the belt harder to be able to run way higher stock gearing.

 

[d mills]

The XM runs 21/59 ( 2.81 )gearing? Poo runs 20/42 ( 2.1 ) maybe it's true that the Poo clutch squeezes the belt harder to be able to run way higher gearing.

21/59?