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Hitting Rev limiter on Top end

NytroPturbo

Newbie
Joined
Feb 13, 2017
Messages
3
Age
61
Location
Wisconsin
Country
USA
Snowmobile
Nytro Push Turbo
I have a 2011 XTX
Push turbo / 190HP
Primary arms - Dalton quick adj wtih 65.2 gr wt.
Blue/brown/Blue - Stiffest spring
Machined overdrive by SB.
Secondary stock white spring
SB helix F1 46/39
Twist 80 deg (6-2)
Flatlander sled in Wisconsin.
1.25 inch track.

Problem- Keep hitting off rev limiter on top end (WOT).

I tried adding weight to primary as well as using a softer primary spring. No chg.

Would increasing my helix angle fix this? Say 50 deg straight?

Thanks.
 

Take some twist outa that secondary man
 
Make sure the bushings are in good shape 2
 
How many miles belt?
Do an alignment check also
How much weight did you add?
 
I would throw a bunch of weight at it until the R's come down, then slowly remove a few grams as necessary until you find your desired RPM. I would avoid adjusting the secondary too much except to fine tune.
 
Yamaha silver secondary spring with 6-1 wrap to start off, should get you pretty close.
 
Woody is right try more weight in conjunction with the spring. I prefer the lower finish angle because it almost always gets a better top speed, and no slipping.
 


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