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Just wanting to know what the best clutching for the Impule Nytro with about 16.5 psi boost. I have heard good and bad things about Arctic Cat Green Spring.
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blue/brown/blue primary spring, supertips, shockwave helix, red/white ac secondary spring.
This is what I plan to run, testing tomorrow.
I run the same except with a AC green and a shockwave helix. My last belt lasted 1000 miles, I just changed it because RPMs were getting low.
I got the ac ed/white spring from Paul. Its about the same as the ac green but this one lasts longer....
Have you tried the blue/white/blue primary spring??
I have tried both, I have the Blue white blue on now. I will try the ac Red/white next time though.
Whats the difference between the blue/brown/blue and the blue/white/blue primary springs?
Ha ha just realized I need to order new clutch chart....Yamaha changing too much over the last couple of years....here's specs!
BLUE/WHITE/BLUE
93.4mm Total Length / 5.8mm Wire / 45 kg preload / 119 kg total force / 2.25 kg/mm spring rate
BLUE/BROWN/BLUE
98.4mm Total Length / 5.8mm Wire / 50 kg preload / 116 kg total force / 2 kg/mm spring rate
All of the Nytro's in our group run Blue/White/Blue primary, Dalton weights ranging from 75 gr to 88 gr. EPI or cat purple sec spring with Yamaha straight cut 47 deg helix. It was the same for a 162 or 174 track and elevation 5500-7500 ft. No belts sticking in the secondary and decent belt life. 600-800 kms in Revy snow.
This works good for us anyway.
All of the Nytro's in our group run Blue/White/Blue primary, Dalton weights ranging from 75 gr to 88 gr. EPI or cat purple sec spring with Yamaha straight cut 47 deg helix. It was the same for a 162 or 174 track and elevation 5500-7500 ft. No belts sticking in the secondary and decent belt life. 600-800 kms in Revy snow.
This works good for us anyway.
It is wrapped up pretty tight. Never had a slipping issue though.Do you have to run quite a bit of preload with the Puple sec spring to keep the belt from slipping?
All of the Nytro's in our group run Blue/White/Blue primary, Dalton weights ranging from 75 gr to 88 gr. EPI or cat purple sec spring with Yamaha straight cut 47 deg helix. It was the same for a 162 or 174 track and elevation 5500-7500 ft. No belts sticking in the secondary and decent belt life. 600-800 kms in Revy snow.
This works good for us anyway.
The blue/white/blue primary spring is that a yammy part or EPI ?
Thanks
Also, what holes should the EPI purple secondary spring should be in.
I ask because I had dealer put it in and now I'm hit the rev limiter at 9100 rmps at 7000 feet.
That's all that was changed
How much different of a profile are the Daltons from the Supertips? And where are you guys placing your washers (inside, center, outer?)
Which rollers do you recommend with Dalton weights?