For any given elevation, Polaris recommends the exact same clutching on everything from a 155 x 2.6" to a 174 x 3.0". I know they gear the 3" tracks lower, but it seems to me that the clutching would also be somewhat different, at least on the 174. I'm guessing maybe a stiffer secondary spring and/or a shallower helix to compensate for more traction and a heavier track. Anyone have enough time on a 174 in deep snow to have an opinion?
Axys 174" Clutching
- Thread starter NoSoup4U
- Start date
I have a 2017 800 rmk with 163 x 3" track that I haven't rode in the mountains yet, but I do have a comment on the subject at hand.
Your comment "I'm guessing maybe a stiffer secondary spring and/or a shallower helix to compensate for more traction and a heavier track" I agree with IF you don't gear down. Gearing down proportional to the increased load of the 3" track re-balances the CTV. Its not perfect but clutch tuning is all about compromise. Given the choice of lower gearing vs helix/spring changes on the 3" track I would take the lower gearing for the low end torque that gives a better holeshot and low speed tractoring. The gearing change also reduces the belt heat by operating the CVT in a higher more efficient ratio. The lower top speed, due to the lower gearing, is still greater than the 3" track top speed limit of 60 mph mentioned in the operator manual.
All seem reasonable for a track primarily used in deep powder.
I installed a mountain clutch kit on my new sled already without even riding it as I know a performance shop out west can do better than the broad based setup provide by the factory. They recommended a different helix, different profile weights and a thrust bearing in the secondary. No changes in gear ratio.
Cinno
