Gates belt lookup tool is wrong for 850s

[Solby]

Beware of the Gates belt lookup tool for 850. If you type in the 3211216 off an Axys 850 or Matryx 850 it brings up the 45x4553 (either 45G4553, 45C4553, or 45R4553) and these are the wrong belts they have a 26 degree belt angle. The sheaves have a 28 degree angle. I personally made that mistake and it will run a 45C4553 belt but the deflection is all messed up and you clutch will burn in the right angle kind of, but it will cause slipping at times and never grip right. After comparing the 3211216 angle and the 47C4572 to the actual clutches themselves they match the angle correctly with the 28 degree angle. The 26 degree angle does not (4553).

 

[TRS]

There is a glitch here as well.
The Gates 45x4553 belt is a 26* and the Polaris 3211216 is a 28*. The Gates 47x4572 are 30* belts. Except the 47R4572-26 it is a 26* belt.
Historically the AXYS clutch has been a 27* and the new boost clutch, I have on the bench, is 26*. There is also an inconsistency in Polaris sheave angles to consider.
As we all know belts will wear into the primary sheave angles.Gates R belts get a bit wider, compared to other compounds, at a tight radius and that changes belt angle as well. BRP knows that and changed clutch sheave angles to accommodate.
The cord in the 45x4553 is also located higher in the belt profile to help reduce cord pull. Something we have all witnessed on the stock belt.
You ask, How do I know these angles. I have gauges.

 

[Arc]

Такой же косяк есть и с ремнями Gates на Ski Doo только они короче стандартного размера на 5 см. 417300571-1124 см,

48C4289- 1119 см​

[ATTACH = полный] 380740 [/ ATTACH]

 

[TRS]

Arc, I wish I could translate your post.

 

[Arc]

Arc, I wish I could translate your post.

There is the same jamb with Gates straps on Ski Doo, only they are shorter than the standard size by 5 cm. 417300571-1124 cm,
48C4289- 1119 cm

 

[TRS]

WOW

 

[Arc]

УХ ТЫ

The angle is the same but the length is not enough and the belt begins to burn and explode

 

[TRS]

I know a lot of Doo guys run the Gates 50R4289 or 50C4289 with great results.
You have my attention here, if you have time, mark your Doo belt and roll it out on a flat surface. Measure that distance and do the same with a Gates belt.

 

[TRS]

The Gates 49R4313 is a 38x1124

 

[Arc]

I know a lot of Doo guys run the Gates 50R4289 or 50C4289 with great results.
You have my attention here, if you have time, mark your Doo belt and roll it out on a flat surface. Measure that distance and do the same with a Gates belt.

I did as you write. And I ordered a belt from the Gates catalog

 

[Arc]

The Gates 49R4313 is a 38x1124mm

And what is the angle on this belt? 26 degrees

 

[Arc]

The Gates 49R4313 is a 38x1124mm

The angle of this belt is 28 degrees and the standard belt is 26

 

[Arc]

The Optibelt 11155 belt fits all sizes

 

[AdrenalineAddict]

I believe the only way to find the perfect angle match is run both angles and see which one requires the least amount of breakin miles. On my 850 a 28 degree belt requires a ridiculous amount of miles (150) to get full belt to sheave contact. A 26 degree belt requires very few miles to get belt to sheave contact. The 45R is the best match for the cut on my 850. I have a hunch they are not all cut exactly the same.

 

[Arc]

I believe the only way to find the perfect angle match is run both angles and see which one requires the least amount of breakin miles. On my 850 a 28 degree belt requires a ridiculous amount of miles (150) to get full belt to sheave contact. A 26 degree belt requires very few miles to get belt to sheave contact. The 45R is the best match for the cut on my 850. I have a hunch they are not all cut exactly the same.

When the belt has a different angle due to poor fit, the variator plates will sharpen and the belt will burn

 

[AdrenalineAddict]

When I run a new Polaris 216 I get slippage for 150 to 200 miles, if I can make it through this period without pulling a cord I have a belt that will last a long time, have 1,400 miles on one. When I run a 26 degree belt such as the 45R I don't have to worry about overheating and plucking cords because it matches the sheave angle like it should and doesn't slip and heat through the breakin process.

 

[Arc]

When I run a new Polaris 216 I get slippage for 150 to 200 miles, if I can make it through this period without pulling a cord I have a belt that will last a long time, have 1,400 miles on one. When I run a 26 degree belt such as the 45R I don't have to worry about overheating and plucking cords because it matches the sheave angle like it should and doesn't slip and heat through the breakin process.

I don't know how on Polaris but on Ski Doo the native angle of the belt is 26 degrees and it only needs to be rolled up a little if the angle is 28 then there will be problems

 

[Arc]

What is the width, length and thickness of the 45R belt?

 

[AdrenalineAddict]

The width is 1.43" and the length is 46.7" can't speak for thickness. The OP of this thread has the belt dimensions in the first post for reference. I have approximately 250 miles on a 45R with good results to date. I am a little concerned the compound used in the 45R may be a little hard as it wears the scotchbrite scuffing of my sheaves off in 10 or 20 miles. I have not run it in deep snow conditions yet, hopefully real soon. Results are promising so far, I ran it in some very hot springtime conditions with no fade or slip, sheaves stayed clean even after a 10 mile 70 mph rip down the road. My Polaris 216 will turn the sheaves a dark brown after a heated 10 mile road run. I made some long fast road rides with several other 850's last spring, every sled in the group running the 216's had dark brown sheaves at the trailer.

 

[Arc]

The width is 1.43" and the length is 46.7" can't speak for thickness. The OP of this thread has the belt dimensions in the first post for reference.

Your belt is narrower and longer but the angle is the same dimensions Doo 38x1124 mm