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39 to 43 gears

C
Nov 26, 2007
164
2
18
I know, old question, new forum. '04 800 VE with stock gearing. I've heard that I should be switching from 19/39 to 19/43. Is this a better switch or not? Will this affect my clutching and will I need a longer chain. I usually ride around 6000 to 8000 ft. Anyone tried jober gears or should I continue with the HYVO's.
Thanks
 

RYDPWDR

Well-known member
Premium Member
Aug 15, 2002
542
172
43
Billings,MT
You will need a new chain, 74 pitch I believe. I run 19-42 in the exact same sled and my clutches run much cooler/better belt life and better track speed for boondocking the trees IMO.
 

sled_guy

Well-known member
Premium Member
Jul 5, 2001
3,566
843
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Riverton, Utah
I would not gear it down if you are running anything like a 2x159 or shorter track. Not a fan of gearing down mountain sleds. What problem do you have that you think gearing down will fix?

sled_guy
 
C
Nov 26, 2007
164
2
18
Running a 2x159 track. Was told that it would climb better. Just trying to justify the cost of new gear and chain $$$.
 
W

Wayniac

Member
Nov 26, 2007
232
11
18
sunny Seattle
I just made the switch from 19/39 to 19/43 74P based an advice from talking to several people. They all said the hillclimbing out here is all about track speed and their speed increased with the lower gearing. I run a 2.25 159
 
2
Nov 26, 2007
510
41
28
Kent,Wa.
I would gear it way down for climbing or boondockin. You will have to do some clutch tuning if you make a big change though. I would go at least 2.25:1, mine is 2.55:1 and really like the results. But this one gets argued about a lot. Pick someone you trust and go with it. As we all know what they say about oppinions and ***holes, everyone has one! -00's
 

sled_guy

Well-known member
Premium Member
Jul 5, 2001
3,566
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Riverton, Utah
On my 2.4x151 gearing it down didn't increase track speed. It didn't affect belt heat either. It did kill top speed and decreased runup speed to the hill. It also didn't make it feel any better or worse in the trees.

On my 2.4x166 it for sure helped with belt heat and belt life.

That's why I say if you have a 2" track I wouldn't do it.

sled_guy
 
B

Bull

Well-known member
Jan 20, 2004
776
106
43
colorado
have run 19-42 in my last 3 sleds......03 vert escape, 07 600 and 727 rmk....going to run in on my 08 700 rmk.......on was 159, other three 155. run 9-11K. would HIGHLY recommend. perhaps not 43, but easily 42. you lose a LITTLE top end, but gain tremendous quickness, and yes, clutches DO run cooler. they gear a little tall for the mountains. they gear for the average.......8-10K is not average.
 
R
Jan 2, 2002
1,048
18
38
57
Newman Lake Washington
PHP:
19-43 10-64 almond red drive, red black team sec, 66-42-46 sled runs strong
at 7-9000ft

I run the same set up in my ported 03 escape and it RIPS!! But I run a 58-38-40 ...Even ported it seems to pull it best....Maybe some guys like the 66 but Ive had a couple of buddies try it and come back to the 58.....A 910 pulls the 66 GREAT!

I also run a 2 1/4"X16"X162" track ...its a little tight but nothing a few washers to spread the tunnel wouldn't cure;)

Ragged
 

Vern

Well-known member
Lifetime Membership
Jun 14, 2004
2,454
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113
hyrum utah
we run 19-43 gears in most of the poos in our group and we like it alot, im a firm believer in low gearing.
 
I
Nov 26, 2007
2,866
1,337
113
PHP:
19-43 10-64 almond red drive, red black team sec, 66-42-46 sled runs strong
at 7-9000ft

I run the same set up in my ported 03 escape and it RIPS!! But I run a 58-38-40 ...Even ported it seems to pull it best....Maybe some guys like the 66 but Ive had a couple of buddies try it and come back to the 58.....A 910 pulls the 66 GREAT!

Ragged

I run 19/43 on an 800 136"....it rips :D I ran 19/42 on my RMK with a 151, can't go wrong gearing down, who wants to go faster than 75 anyways?
 
F
Nov 26, 2007
584
153
43
Minnesota
On my 2.4x151 gearing it down didn't increase track speed. It didn't affect belt heat either. It did kill top speed and decreased runup speed to the hill. It also didn't make it feel any better or worse in the trees.

On my 2.4x166 it for sure helped with belt heat and belt life.

That's why I say if you have a 2" track I wouldn't do it.

sled_guy

With a large gearing change you also need to add more helix. You have increased your mechanincal advantage which allows you to load the system more I.E. more helix....

I run 2.27 on my 144/2 and I am pulling a lot more helix than I could before the gearing. I have increased my track speed in the trees and have not lost a step on the hills. With no change in clutching to match the gearing I did see less speed on long runs like Sled_Guy mentioned. The sled felt flat on long pulls.
 
R

Ron

ACCOUNT CLOSED
Dec 4, 2006
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Boise
I wonder what the "gear it down" camp knows that Polaris doesn't. For several years, Polaris, select dealers & others have been testing tracks, gearing & clutching in the west. 6's, 7's & 8's are geared different-just maybe Poo knows what they are doing?
IMO most should leave your stocker alone, with the exception of the 166's. You will climb better in dry powder! Carl's & SLP don't suggest gearing down, even with mods.
 
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B

Bull

Well-known member
Jan 20, 2004
776
106
43
colorado
i'm sure poo does know what they are doing, and yes, they do a lot of testing. however, as was mentioned earlier they are selling for the masses which means they are setting it up "on average". plus i don't believe there is one "perfect" setup......some like blondes, some brunettes....
 

GKR

Well-known member
Premium Member
Nov 26, 2007
502
177
43
57
Edmonton
You can take all the guess work out of this with a simple test. Take a Sharpie and mark the primary clutch with a straight line from the center shaft out to the outer edge. After riding you will see how far up the clutch your belt has been riding (shifting) by how much of the line is worn off and this will tell you where you need to be with your gearing. If you are not shifting all the way out (I would only to go to around 3/8" from the top on a high speed run) you are geared to high and should gear down to get the maximum out of your sled. In simple terms, the clutching is your transmission and similar to a truck, if your diffs are geared to high you will not be able to pull 5th gear. Gear down and you will get this back. The reality is if you are geared too high, you can gear down and gain much better throttle response, acceleration and NOT lose any top speed.
It is much simpler than most people think, you just need to take the time to verify it.
The reason the OEM's gear the sleds high is that if someone takes a stock sled on the lake with a very smooth hard pack and winds the sled out to maximum speed you can shift out to the top of the clutch and to go any faster if conditions would allow for it you would experience an over-rev condition. They protect from that by gearing high so it doesn't happen. Practically, most people would/could never do this, particularily in higher snow or mountain riding so there is a lot to be gained by gearing down.
Cheers,
 
C
Nov 26, 2007
164
2
18
Well it sounds like I've got some testing and thinking to do. I should of mentioned earlier what I've done to the sled already.
-single slp
-mbrp can
-attack compensator
-air horn
-flow rites
-powder hounds
-fabcraft t-arms and rods
-extroverts
-stock gearing and clutching
Not alot but it seems to run O.K.
 
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I

IceCap

Well-known member
Nov 27, 2007
675
131
43
B.C.
Stock on my 06 900 was 20/41 I only changed the top gear down to a 19 and I like the difference. I want to change my lower to a 42 a that way i can still run my stock chain.
 
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