Used prices

lilduke

Active VIP Member
Joined
Sep 15, 2009
Messages
19,391
Reaction score
68,915
Location
Local
Never broke the inside flange shaft? Lol.
No man that thing was solid...lol That's one of the appealing things about the new etec doo's... You can put some serious hours on them with few problems based on my experiances.
 

lilduke

Active VIP Member
Joined
Sep 15, 2009
Messages
19,391
Reaction score
68,915
Location
Local
Just going back to Poo Vs Doo primary clutch. So the theory is the Polaris clutch slips less at high rpm. What real evidence of that is there? How much does a TRA slip in rpms @8000engine rpm and 100ft/lbs of torque? Only way I could see of validating that theory. would be to try both clutches on a track hp dyno with the same engine/sled. If its been done post some results please,, sorry just curious/bored. I Just don't think clutch slippage is real easy for your average sled head to calculate....
 

CUSO

Active VIP Member
Joined
Jan 21, 2007
Messages
4,772
Reaction score
5,538
Location
Edmonton
I don't see it. Most people who bash the clutching, don't understand the fundamentals of the TRA. If it would slip at high RPM, the clickers wouldn't work at holding the motor at the desired RPM. You would over-rev all the time.

Just going back to Poo Vs Doo primary clutch. So the theory is the Polaris clutch slips less at high rpm. What real evidence of that is there? How much does a TRA slip in rpms @8000engine rpm and 100ft/lbs of torque? Only way I could see of validating that theory. would be to try both clutches on a track hp dyno with the same engine/sled. If its been done post some results please,, sorry just curious/bored. I Just don't think clutch slippage is real easy for your average sled head to calculate....
 

tukernater

Active VIP Member
Joined
Jan 7, 2010
Messages
1,243
Reaction score
1,411
Location
BC
I don't see it. Most people who bash the clutching, don't understand the fundamentals of the TRA. If it would slip at high RPM, the clickers wouldn't work at holding the motor at the desired RPM. You would over-rev all the time.
Yep

BRP changed vendors on the TRA IN 2007. See where this is going?
Yep what a sh!t show that was.
 

pfi572

Active VIP Member
Joined
Mar 10, 2010
Messages
6,064
Reaction score
15,264
Location
Grande Prairie
Just going back to Poo Vs Doo primary clutch. So the theory is the Polaris clutch slips less at high rpm. What real evidence of that is there? How much does a TRA slip in rpms @8000engine rpm and 100ft/lbs of torque? Only way I could see of validating that theory. would be to try both clutches on a track hp dyno with the same engine/sled. If its been done post some results please,, sorry just curious/bored. I Just don't think clutch slippage is real easy for your average sled head to calculate....

Belt slip on clutch is very easy to calculate. If belt and clutch's are running warm to the touch then not much at all.
If one or the other or both are getting hot than you have slippage .
Blowing belts is heat. Poor alignment , gearing for the clutch set up that you have.
Doo finally clued in and geared sleds for the big tracks and the TRA.
Have never had belt problems or clutch problems with Doo but never have ran what they send out for set up.
My 2 cents
 

lilduke

Active VIP Member
Joined
Sep 15, 2009
Messages
19,391
Reaction score
68,915
Location
Local
Belt slip on clutch is very easy to calculate. If belt and clutch's are running warm to the touch then not much at all.
If one or the other or both are getting hot than you have slippage .
Blowing belts is heat. Poor alignment , gearing for the clutch set up that you have.
Doo finally clued in and geared sleds for the big tracks and the TRA.
Have never had belt problems or clutch problems with Doo but never have ran what they send out for set up.
My 2 cents
Really whats the equation for figuring belt slipage? Hot clutch tells you it a bit. Doesn't give you any real data tho.
 

trench

Active VIP Member
Joined
Nov 29, 2010
Messages
953
Reaction score
731
Location
Sturgeon County, Alberta
Belt slip on clutch is very easy to calculate. If belt and clutch's are running warm to the touch then not much at all.
If one or the other or both are getting hot than you have slippage .
Blowing belts is heat. Poor alignment , gearing for the clutch set up that you have.
Doo finally clued in and geared sleds for the big tracks and the TRA.
Have never had belt problems or clutch problems with Doo but never have ran what they send out for set up.
My 2 cents[

Bingo!!! (Where have we heard that before? )


Check where the arm pivots from on the Poo clutch, the further the arm gets from the pivot the more centrifugal force applied to the roller. The Doo clutch works pretty much opposite of this. Physics!!
 

maxwell

Active VIP Member
Joined
Apr 25, 2007
Messages
20,082
Reaction score
43,172
Location
Sherwood Park, Alberta, Canada
Belt slip on clutch is very easy to calculate. If belt and clutch's are running warm to the touch then not much at all.
If one or the other or both are getting hot than you have slippage .
Blowing belts is heat. Poor alignment , gearing for the clutch set up that you have.
Doo finally clued in and geared sleds for the big tracks and the TRA.
Have never had belt problems or clutch problems with Doo but never have ran what they send out for set up.
My 2 cents[

Bingo!!! (Where have we heard that before? )


Check where the arm pivots from on the Poo clutch, the further the arm gets from the pivot the more centrifugal force applied to the roller. The Doo clutch works pretty much opposite of this. Physics!!


You obviously know nothing about physics because you are talking about belt clamp on a v drive type belt lmfao. It's hilarious. Think about how this type of drive system works. But I'm glad you can use such big words.

Now if the belt was in fact slipping (LMFAO) you would see premature clutch face and drive belt wear. Not the case. New clutches are lasting a very long time and belts no shorter duration than any other brand. So your basically saying the skidoo system is failing all te time but it's actually not because the drive train isn't falling apart? That or Polaris components are such junk they really should be getting 10,000km from there belts. Because they have more belt clamp. Lmfao!
 

maxwell

Active VIP Member
Joined
Apr 25, 2007
Messages
20,082
Reaction score
43,172
Location
Sherwood Park, Alberta, Canada
Also centrifugal force is a direct result of both distance and weight from the center. So to say the Polaris has more force on the roller is in correct unless the center of the roller is further from the center of the clutch an it weighs the same or more.....we don't know that
 

bstienwand

Active member
Joined
Oct 27, 2009
Messages
108
Reaction score
347
Location
Fort Saskatchewan
Also centrifugal force is a direct result of both distance and weight from the center. So to say the Polaris has more force on the roller is in correct unless the center of the roller is further from the center of the clutch an it weighs the same or more.....we don't know that
 

LennyR

Active VIP Member
Joined
Jun 13, 2009
Messages
3,373
Reaction score
14,292
Location
alberta
You obviously know nothing about physics because you are talking about belt clamp on a v drive type belt lmfao. It's hilarious. Think about how this type of drive system works. But I'm glad you can use such big words.

Now if the belt was in fact slipping (LMFAO) you would see premature clutch face and drive belt wear. Not the case. New clutches are lasting a very long time and belts no shorter duration than any other brand. So your basically saying the skidoo system is failing all te time but it's actually not because the drive train isn't falling apart? That or Polaris components are such junk they really should be getting 10,000km from there belts. Because they have more belt clamp. Lmfao!


And now we hear from the kindergarten. LOL. Can u imagine, there are some who think this meadow riding muffin knows ANYTHING !!!
 
Top Bottom