I know some guys want to be told a certain brand of oem or aftermarket, I find it difficult to answer a question like that, drop a name and that's "the answer"
To keep from having a debate, then just look at the elements of your question.
power transferring / tuning capacity,
-One that has readily available helix's off the shelf or easy access or can beg, borrow or steal. Just about every brand oem/aftermarket has easy access, except team - those guys hose you for trying to get anything other than off their small product guide.
For me at one time I used to put P-85's on skidoos simply because I could get the clutches new from the factory cheap and there were 4 companies who had a large helix selection and one "formax" who would program up a helix with no program charge. These clutches at one time were the best for me.
Now a relationship with doo and dalton, the oem are the best for me becuase of part availability.
I think if you have a list of helix's and springs you want to try out, then can look at what is openly and quickly available in the market and used and go for that.
Right now I have a hyperlight secondary for my Rev, to which every cat helix oem/aftermarket fits and every secondary prewind spring from oem/aftermarket fit too, so the capacity to get that secondary to work for me whatever I do will be not so hard to do.
heat dissipation capacity
-Any secondary that does not have "windage trays" on, like polaris, doo, remove the trays to enhance cooling.
In the end, calibration that allows the engine to run "rated rpms" under full throttle and/or have rpms that are quick to recover will/should reveal the lowest temperatures.
and "efficiency of the helix system" (button vs roller)
-Roller is more efficient than the button however in the end its the internal parts that contribute to an efficient system. In the end its what's inside the secondary that make winning make/break system.
- weight... ?
QRS is lightest secondary, paragon is heaviest.
Personally from my experiences I favor the QRS and Paragon however the paragon is xpensive and lack of tuning parts. From my limited experiences with a few guys out west and knowing how they come calibrated excellent out of the box, well that that is just plain good stuff; (The Paragon you are buying 2 things, a good clutch calibration {maybe there is better} and a great clutch), damn, its just the price seems a lot however maybe the reduction of belts bought over the life of the sled, that is how you recover your "ROI" return on investment.
I like the QRS for the availability of easy access of parts and its a light secondary, robust and under load the sheaves keep parallel. I think the paragon is a gem of a secondary because of how the design allows the sheaves to be the most parallel under load. Both clutches do a great job of having the least value of major/minor distance across the sheaves while under full throttle to which contribute to least amount of belt wear (due to parallel sheaves)
I really really wish I could get some satisfaction of getting some other helix's made to test out in the paragon however just not available, still though my hat is off to Mr. Watt for bringing great ideas into the aftermarket that some oem's have copied.
(been reading all of the other "debate" threads, I kind of know everybody even if I never posted anything on the doo forum)
