terez
Expert
Stock NytroFX 120in trail riding.
Installed 14.5mm rollers an YPY as a 1st step.
What helix works well here?
47/43 ? or a straight 47?
Is the stock sec spring good with either of these or ?
Using oem helix or aftermarket? Dalton or ??
Thanks
PS Yes a clutch kit would work great....I've already replaced the rollers and primary so looking for what has worked well for others using that setup. 1st time Yammie for me after 25yrs on Polaris.
Thanks
Installed 14.5mm rollers an YPY as a 1st step.
What helix works well here?
47/43 ? or a straight 47?
Is the stock sec spring good with either of these or ?
Using oem helix or aftermarket? Dalton or ??
Thanks
PS Yes a clutch kit would work great....I've already replaced the rollers and primary so looking for what has worked well for others using that setup. 1st time Yammie for me after 25yrs on Polaris.
Thanks
shadow44
TY 4 Stroke God
Turk use to recommend a straight 47*. You pick up a used Yamaha one for $25-30. Turk had a good set up using all oem stuff but I can't seem to find it....God I miss that cranky old bugger lol...he was a great guy and knew his Yammi clutches. Maybe if Mr Sled reads this we can pin Turks old clutch posts as they were very helpful.
Last edited:

DMCTurbo
VIP Member
- Joined
- Nov 12, 2005
- Messages
- 2,831
- Reaction score
- 2,574
- Points
- 1,623
- Location
- Val Caron, Ontario
- Country
- Canada
- Snowmobile
- 2017 Sidewinder XTX LE 137
I have a 2014 short track nytro and I also have installed the ypy with 14.5 rollers and was wondering what the stock helix angle is?


Stone9
Lifetime Member
- Joined
- Dec 29, 2010
- Messages
- 369
- Reaction score
- 4
- Points
- 863
- Location
- Quimby, IA
- Country
- USA
- Snowmobile
- 2013 Nytro XTX
I run turk's setup. Straight 47 degree helix wrapped to 80 degrees. With the 14.5's in the primary. Great setup
Yamadooed
Pro
- Joined
- Dec 19, 2006
- Messages
- 161
- Reaction score
- 1
- Points
- 968
- Location
- Northern Illnoise
- Country
- USA
- Snowmobile
- 08 Nytro
05 Vector
09 TNT
02 MXZ
I run turk's setup. Straight 47 degree helix wrapped to 80 degrees. With the 14.5's in the primary. Great setup
Do you also run the stock spring or the YPY??? Just wondering how the launch is between the two???


Stone9
Lifetime Member
- Joined
- Dec 29, 2010
- Messages
- 369
- Reaction score
- 4
- Points
- 863
- Location
- Quimby, IA
- Country
- USA
- Snowmobile
- 2013 Nytro XTX
i run green pink green. I needed a few more r's so went up a bit. the stock spring will work but you may find you need to fine tune.

DMCTurbo
VIP Member
- Joined
- Nov 12, 2005
- Messages
- 2,831
- Reaction score
- 2,574
- Points
- 1,623
- Location
- Val Caron, Ontario
- Country
- Canada
- Snowmobile
- 2017 Sidewinder XTX LE 137
Anyone know off hand what the stock helix angle is?


Stone9
Lifetime Member
- Joined
- Dec 29, 2010
- Messages
- 369
- Reaction score
- 4
- Points
- 863
- Location
- Quimby, IA
- Country
- USA
- Snowmobile
- 2013 Nytro XTX
43 degrees
Similar threads
- Replies
- 31
- Views
- 6K