19/43 or 19/45 gearing on 11 pro rmk 800 163"

[Murph]

The other question to ask is what is your coolant temp when it starts to fade?


The ECU starts to retard past 127 degrees-- are you running stock thermostat or A different one?

Long pulls or heavy load and the stock thermostat can't flow enough, even in deep fluffy snow

 

[snopromod]

My clutching right now is
Primary: 10 - 60's weights, blue/pink
Secondary: 56/42 .36. Black spring 155/222
19/42 gearing
Clutches in great shape cleaned
Elevation is 8-10k. See 11k but not much
clutch Temps not bad maybe a little on warm side, but again alot of on off throttle and long pulls, don't stop to cool very often


So I know my secondary spring should be black/purple but just bought sled and I wanted to see where I was at. I really would like full input on gearing with 19-46 I will need 74 link chain right?
I just want a hard pulling bottom end sled and looking for experience with low gearing. Thanks for input everyone.

 

[snopromod]

Anyone done a 18/44 gearing and used the 72 link chain?

 

[TRS]

Anyone done a 18/44 gearing and used the 72 link chain?

I use an 18 on the 550s but it is to tight of a radius for higher RPM applications. You lose efficiency, run the largest top and bottom gear you can to get to your target ratio.

 

[TRS]

This clutch set up is for a stock 800 Pro and running the 3211115 belt at 8-10,000 ft. For 6-8,000 ft run 2 gram heavier weights.


Primary:
Lightning weights. 270# rider 58 gram 150-180# rider 62.5 gram. If you need to drill them to lighten, you must drill the holes all the same size. Exception> you can drill the tip one number size bigger than the rest.
Primary spring. Stock 140-330 or the 120-310(7043681). Use the 120-310 if you had your primary sheaves cut.
The 120-310 will use a 1.5 gram lighter weight. Spider will need to be shimmed. Belt/sheave clearance set to .020"-.040" max. I don't like Polaris spec of 0"-.020". Any amount of heat in the clutch and it swells the .020" pretty fast. Less rolling resistance with it set a little wider.
SecondaryTSS-04:
Helix. 46-32F ER /46-34F ER. It is a special order/cut from Team. Full progressive. I run the 46-32F. Lower than 6000 ft and you can use the 46-34F instead of changing weights.
Secondary spring is a team blue/black or the polaris 120#-200#(7043152) alternative is a Red/Green 120#-220#(7043059)
Center distance on clutch's 11.5".
Max lead in .030". With a .030" float. We all know how to adjust belt deflexion.
Gearing: 74 pitch chain. 20-46 or 19-46. I bounce back and forth here, for myself, all others 19-46.
Something I found very important, Green/White exhaust valve springs.(7041786-03)
I know you keep an eye on your track tension. I had to mention it because I see a lot of RPM problems from the track rubbing the tunnel.
Engagement will be 41-4300. This set up works real well in the trees. Stays engaged and doesn't fall out like the stock style helix does.
With a cool pipe 7950-8050, warm pipe 8050-8150, hot pipe 8150-8250. If it starts to drop off on a really long hard pull with a hot pipe its the ECU pulling timing. I like the hot pipe it makes perma grin.
I would consider adding the $28 upgrade it will end a lot of running issues.

I hope this answered your questions.
*Rider weight is buck naked in the morning before breakfast.
Edit:
Components available from Rogers Sport Center(307-587-6818) tell them Tony sent you.

 

[snopromod]

OK thanks alot TRS I will use this as a great reference.
I'm going to change spring and gearing to the 19/46 and I'll start working towards your set up if I can't get mine dialed.
Very much appreciated.

 

[snopromod]

I went with a 19/45 gear setup on my 800 163 pro. 2.36 ratio.
what are guys running in Your clutches for this setup?
8-10k feet
deep/steep terrain
Thinking 62grm weights, blue pink spring
Black spring secondary 155/222 with stock helix
I also have a black/purple to put in 160/240

 

[Norway]

*Rider weight is buck naked in the morning before breakfast.

Tony, do you ride a lot in the morning... before breakfast.... buck naked...???

If so; you are my hero!

 

[wellfed777]

snopro
it would be interesting to try just the gearing change and see whats
different on the hill
then try the blk/purple and try again
( remember to use blue locktite on the bottom gear bolt )

 

[snopromod]

Ran my 19/45 gear setup today, one word "WOW!"
What a difference, pulled way harder, carried more track speed on deep, steep pulls and really woke sled up.
Very happy with choice,,
I ran 60grm weights, blue/pink in primary
Secondary stock helix and black spring 155/222
Sled rips!
Pulled 8200rpm all day no fall offs at all..

 

[wellfed777]

nice ! ya i thought you might be able to keep the stock secondary
spring good deal
now you get a taste of what a truly great clutching/gearing setup can bring to a sled ha ha

let it snow (please)

 

[bryceraisanen]

This clutch set up is for a stock 800 Pro and running the 3211115 belt at 8-10,000 ft. For 6-8,000 ft run 2 gram heavier weights.


Primary:
Lightning weights. 270# rider 58 gram 150-180# rider 62.5 gram. If you need to drill them to lighten, you must drill the holes all the same size. Exception> you can drill the tip one number size bigger than the rest.
Primary spring. Stock 140-330 or the 120-310(7043681). Use the 120-310 if you had your primary sheaves cut.
The 120-310 will use a 1.5 gram lighter weight. Spider will need to be shimmed. Belt/sheave clearance set to .020"-.040" max. I don't like Polaris spec of 0"-.020". Any amount of heat in the clutch and it swells the .020" pretty fast. Less rolling resistance with it set a little wider.
SecondaryTSS-04:
Helix. 46-32F ER /46-34F ER. It is a special order/cut from Team. Full progressive. I run the 46-32F. Lower than 6000 ft and you can use the 46-34F instead of changing weights.
Secondary spring is a team blue/black or the polaris 120#-200#(7043152) alternative is a Red/Green 120#-220#(7043059)
Center distance on clutch's 11.5".
Max lead in .030". With a .030" float. We all know how to adjust belt deflexion.
Gearing: 74 pitch chain. 20-46 or 19-46. I bounce back and forth here, for myself, all others 19-46.
Something I found very important, Green/White exhaust valve springs.(7041786-03)
I know you keep an eye on your track tension. I had to mention it because I see a lot of RPM problems from the track rubbing the tunnel.
Engagement will be 41-4300. This set up works real well in the trees. Stays engaged and doesn't fall out like the stock style helix does.
With a cool pipe 7950-8050, warm pipe 8050-8150, hot pipe 8150-8250. If it starts to drop off on a really long hard pull with a hot pipe its the ECU pulling timing. I like the hot pipe it makes perma grin.
I would consider adding the $28 upgrade it will end a lot of running issues.

I hope this answered your questions.
*Rider weight is buck naked in the morning before breakfast.
Edit:
Components available from Rogers Sport Center(307-587-6818) tell them Tony sent you.

Drilling some weights now. Trip coming next week. The 62.5g lightnings I bought actually weigh 62.8-62.9 grams. R u actually weighing them at all or just going with what they're stamped?

I weigh about 220 with backpack etc. Thinking I'll have one set at 61.00 grams for Cooke/TOW and a set at 59.00 grams for the Snowies where plenty of riding is above 10,000 feet..

Have TKI 2.42 gears and green white EV springs, belt sheave at .030" currently

.

Sent from my SM-G930T using Tapatalk

 

[adamg]

Can someone answer a few questions about gearing a 2011 Pro 800 163...

- What is factory gearing?
- Is factory chain appropriate for 19/46 gearing?
- In general what will happen to my RPM if I change to a 19/46 gearing from factory.. will sled rev higher or lower at WOT?

Edit: are these the part numbers I would need?

CHAIN,HYVO.74P,3/4W
Polaris
item: 3221109

Sprocket, 46T
Polaris
item: 3221191

SPKT,19T,3/4W,15 SPL,HV,PM
Polaris
item: 3221095

 

[adamg]

Can someone answer a few questions about gearing a 2011 Pro 800 163...

- What is factory gearing?
- Is factory chain appropriate for 19/46 gearing?
- In general what will happen to my RPM if I change to a 19/46 gearing from factory.. will sled rev higher or lower at WOT?

Edit: are these the part numbers I would need?

CHAIN,HYVO.74P,3/4W
Polaris
item: 3221109

Sprocket, 46T
Polaris
item: 3221191

SPKT,19T,3/4W,15 SPL,HV,PM
Polaris
item: 3221095

Evidently not. 3221191 is for some weird FST driveshaft. I can't find a part number for a Polaris 46t sprocket that fits the RMK. Looks like I'll have to order aftermarket.