terez
Expert
Stock 2013 Nytro FX studded.
3900 miles...this damn thing just gets stronger as it slooowwwly breaks in!!
I swapped in 14.5mm rollers lst yr...luv em..smoother engagement and better belt squeeze.
I went to a YPY spring as suggested and I was getting 8900~8950 shift rpm.
This year I'm getting 9100~rpm...and slightly lower top speed.
She's overevvin and not pullin.
These motors really don't fully breakin till around 4000 miles...!!
I know this topic is beat up but...
Should I go back to the stock spring or which spring to get the shift rpm back to 880 or so?
Or...I am convinced the sled needs a steeper helix. How about a oem Yamaha 47?
That should upshift harder and pull down my shift rpm a hundred or so no??
I'm not lookin to spend on a clutch kit...just twek the clutching with easily/inexpensive stuff.
A oem straight 47 or maybe an aftermarket 43/47?
What are you guys using with the 14.5mm rollers for a primary spring in a stock sled?
What about a helix for same?
Sea level trail riding, studded so traction not a concern, 210 geared up.
3900 miles...this damn thing just gets stronger as it slooowwwly breaks in!!
I swapped in 14.5mm rollers lst yr...luv em..smoother engagement and better belt squeeze.
I went to a YPY spring as suggested and I was getting 8900~8950 shift rpm.
This year I'm getting 9100~rpm...and slightly lower top speed.
She's overevvin and not pullin.
These motors really don't fully breakin till around 4000 miles...!!
I know this topic is beat up but...
Should I go back to the stock spring or which spring to get the shift rpm back to 880 or so?
Or...I am convinced the sled needs a steeper helix. How about a oem Yamaha 47?
That should upshift harder and pull down my shift rpm a hundred or so no??
I'm not lookin to spend on a clutch kit...just twek the clutching with easily/inexpensive stuff.
A oem straight 47 or maybe an aftermarket 43/47?
What are you guys using with the 14.5mm rollers for a primary spring in a stock sled?
What about a helix for same?
Sea level trail riding, studded so traction not a concern, 210 geared up.
Stone9
Lifetime Member
- Joined
- Dec 29, 2010
- Messages
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- Location
- Quimby, IA
- Country
- USA
- Snowmobile
- 2013 Nytro XTX
I run the 14.5's with a green pink green and the stock helix. Hits 9000
I have also used the 47 which is faster but I had more slipping and heat on clutchs
Sent from my XT1254 using Tapatalk
I have also used the 47 which is faster but I had more slipping and heat on clutchs
Sent from my XT1254 using Tapatalk
nitris223
TY 4 Stroke Junkie
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- Nov 18, 2012
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- Location
- Yorkton Saskatchewan
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- Canada
- Snowmobile
- Yamaha Nytro MTX
I am running a OPO primary spring 14.5 rollers and a 43 helix on a 162 MTX. was pulling 9000 rpm when I had a Hindle Hurricane exhaust set up.
canoehead
TY 4 Stroke God
- Joined
- Jan 14, 2011
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- NE, Alberta
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- 2014 XF9000, 2016 Viper XTX
I run the 14.5's with a black \Heel clicker spring and 2-speed weights. Hold on............
Beenba
TY 4 Stroke Junkie
- Joined
- Feb 16, 2011
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- 579
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- Ontario
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- 2009 Nytro XTX
^dammit i still want to run that setup. Just can't justify it with our past 2 crappy winters and now the dollar.
shadow44
TY 4 Stroke God
Spend the money cheapskate lol
upei93
TY 4 Stroke Guru
- Joined
- Apr 27, 2008
- Messages
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- Location
- Dalhousie, NB
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- Snowmobile
- 2015 Viper X-TX LE MPI turbo
2009 Nytro XTX
I run the 14.5's with a black \Heel clicker spring and 2-speed weights. Hold on............
Mine eats heelclickers...I have 3 sets with groves on top of weights...I wonder if the stock rollers have anything to do with that??
