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Axys Gearing

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Sno Junkie

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I have a 2017 Axys 800 155 with a BD Sidekick. I am using the clutching that BD supplies with the kit. I ride 6500-8500. I have been going through belts every 150 miles. I would like to gear mine down and see if it helps with the belt heat. I ride the trees. I am very very "choppy" throttle rider. I am not very good at letting it cool down. I am also about 250# with Avi pack on.
I'm confused on the info I am receiving. The TRS Clutch thread mentions that my stock gearing is 2.22. The info I received from TK1 is that my gearing is 1.96. TK1 is suggesting a 2.17. Obviously I think he knows his stuff and 95% trust what he is saying, but why am I seeing different here on the board?
 

roughrider99

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1.96 is the drive ratio of just the belt drive and 2.22 is the Final drive ratio which takes into account the size/tooth count of driver. As have 7 or 8 tooth drivers effectively changes your gearing aswell
 
S

Sno Junkie

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1.96 is the drive ratio of just the belt drive and 2.22 is the Final drive ratio which takes into account the size/tooth count of driver. As have 7 or 8 tooth drivers effectively changes your gearing aswell

Thank you!
 

wellfed777

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lower gearing can be helpful for sure

but........... if you're going through belts every 150 miles
(2-3 rides) something is not right with your clutching

you might wanna try that TRS clutching
 

Sage Crusher

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Just remember that Tom's kits (TKI) ratio's are based off 8 tooth drivers.
( at least that is what I remember of the conversation)
I went through alot with him on ratios..till I just went with swapping my tiny stock 7's to 8's
I think you have alot more going on than gearing...Dive into your BD turbo dealer head, and see what they are setting them up at ..should be no secrets.
 

ripnit

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First thing to check is clutch Alignment if you haven't aready.... Watched a friend take off secondary, set it on the floor, later put it back on and one of the alignment spacer was laying on the floor and he never saw it. Also check motor mounts.
 
K
Feb 5, 2012
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Go with the Vohk clutching my buddy was having same issue and going through belts and the Vohk clutching dropped his clutch temps dramatically and thus helping belt Life we knew his was way hotter than mine but now same temp or even cooler than mine
 

snowracer21

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'17 Pro 155 w/ Silber @5psi, usually ride 5-7k.

installed w/ zero miles on sled, took off OEM belt, washed in warm soapy water, got a few good heat cycles in it... shredded it at 40 miles.

installed Gates Carbon belt, blew one at 130 miles, and another at 170. Took the sled to the dealer, secondary was slightly out, so put in a thinner washer. However, prior to my next ride, I also installed Indy Specialties clutch kit w/ Turbo 3 weights, and also an SLP torque arm.

Now have 400 miles, w/ OEM belt, and some pretty hard riding..and all is well. I'm not sure what did it, but I'm sure each change I made played a part.
 

aksledjunkie

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'17 Pro 155 w/ Silber @5psi, usually ride 5-7k.

I also installed Indy Specialties clutch kit w/ Turbo 3 weights, and also an SLP torque arm.

Now have 400 miles, w/ OEM belt, and some pretty hard riding..and all is well. I'm not sure what did it, but I'm sure each change I made played a part.



The Indy Specialties clutching plays a huge role in reducing clutch temps. I just pulled my belt off and gave it to my buddy for a spare. Belt is in good shape, slightly skinnier though, and currently has over 700 miles from this season on it. Clutch temps kill....
 

L. Perry

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I second the Volk clutching. I run it on my sidekick and have had no belt issues whatsoever. Never had any with Boondockers either. Agree something else is issue but Volk clutching is spot on.
 

Teth-Air

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It seems as everybody is calculating the final drive slightly differently. Obviously it is the bottom gear teeth number divided by the top gear teeth number to get the gear ratio. Now to compare to the old 8 tooth ProRide (2.86 Pitch) here is where it gets tricky for some.

Divide the gear ratio by .875 if you are still running 2.86" pitch, 7 tooth drivers (8 x 2.86" = 22.88" circumference) and (7 x 2.86" = 20.02" circumference) 20.02/22.88=0.875

Or

Divide the gear ratio by .917 if you are running 3" pitch, 7 tooth drivers (8 x 2.86" = 22.88" circumference) and (7 x 3" = 21" circumference) 21/22.88=0.917

Anyway this is what make sense to me. Chime in if you have a better method.
 
C
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Just remember that Tom's kits (TKI) ratio's are based off 8 tooth drivers.
( at least that is what I remember of the conversation)
I went through alot with him on ratios..till I just went with swapping my tiny stock 7's to 8's
I think you have alot more going on than gearing...Dive into your BD turbo dealer head, and see what they are setting them up at ..should be no secrets.
I'm having the same issue with belts 16 axys 163 quick drive boondocker sidekick boondocker clutching changed the track to a 2.8 camso conquer 165 3.5pitch trying to figure out how much I changed the gearing with the 7 tooth 2.86 driver swap to 6 tooth 3.5 pitch that's almost an inch difference anyone know the math on this appreciate any help I can get
 

Tewstroke

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It seems as everybody is calculating the final drive slightly differently. Obviously it is the bottom gear teeth number divided by the top gear teeth number to get the gear ratio. Now to compare to the old 8 tooth ProRide (2.86 Pitch) here is where it gets tricky for some.

Divide the gear ratio by .875 if you are still running 2.86" pitch, 7 tooth drivers (8 x 2.86" = 22.88" circumference) and (7 x 2.86" = 20.02" circumference) 20.02/22.88=0.875

Or

Divide the gear ratio by .917 if you are running 3" pitch, 7 tooth drivers (8 x 2.86" = 22.88" circumference) and (7 x 3" = 21" circumference) 21/22.88=0.917

Anyway this is what make sense to me. Chime in if you have a better method.


Teth air,

Are you sure that you don’t multiply by those factors instead of dividing? Just asking.
 

d8grandpa

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I'm having the same issue with belts 16 axys 163 quick drive boondocker sidekick boondocker clutching changed the track to a 2.8 camso conquer 165 3.5pitch trying to figure out how much I changed the gearing with the 7 tooth 2.86 driver swap to 6 tooth 3.5 pitch that's almost an inch difference anyone know the math on this appreciate any help I can get

7x 2.86=20.02
6x 3.5= 21
Divide 21 x 20.02=1.048
Your gear ratio is approx 5% higher with your new drivers.
 

02sedona

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I have a 2017 Axys 800 155 with a BD Sidekick. I am using the clutching that BD supplies with the kit. I ride 6500-8500. I have been going through belts every 150 miles. I would like to gear mine down and see if it helps with the belt heat. I ride the trees. I am very very "choppy" throttle rider. I am not very good at letting it cool down. I am also about 250# with Avi pack on.
I'm confused on the info I am receiving. The TRS Clutch thread mentions that my stock gearing is 2.22. The info I received from TK1 is that my gearing is 1.96. TK1 is suggesting a 2.17. Obviously I think he knows his stuff and 95% trust what he is saying, but why am I seeing different here on the board?

Have you checked the clutch alignment? I would start there first before spending anything on gears.
 

sledhed

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Polaris Pro-ride quickdrive gears are a cheap gear-down using stock Axys quickdrive belts if you want to go that route too, but it does sound like an alignment issue for starters...
 

Teth-Air

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Teth air,

Are you sure that you don’t multiply by those factors instead of dividing? Just asking.

Divide the ratio as this actually gives you a higher end number. Think about a 7 tooth driver, it moves the track a smaller distance for 1 revolution compared to an 8 tooth. A shorter distance is due to lower end gearing. (higher ratio)
 
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