Clutch Kit Questions. Who is running what and why?

[garyr]

Gentlemen..I am not into speed or racing, but just want my Nytro to engage smoothly and be smooth on slow twisty trails ...what would I need to do clutch wise to accomplish this...is there a quick inexpensive fix or do I have to live with this if I am not willing to buy a new clutch kit...thanks for any info...just spent enough on the machine itself...

 

[kurtasaurus80]

Just blew the crap out of a Ultimax 3 belt??? Wot on the lake about 90 and she let go. Other then that I think the rollers and yellow pink yellow spring is pretty close.

Ultimax belt? Thats a problem right there. The stock Yamaha belts are the best and only way to go.

 

[mach9]

Which belt is softer, or should I say easier for the clutches to get hold of.
Ultimax-XS or Dayco XTX?

 

[garyr]

r u saying my belt is the problem...i am running on a stock Yamaha belt right now

 

[canoehead]

The proven belt of choice for these is the Ultimax (Carlisle) belt XS-805. It is softer than than the stock belt. It's supposed to grip better therefore causing less slippage which equates to less heat on the clutches.

 

[mach9]

Gentlemen..I am not into speed or racing, but just want my Nytro to engage smoothly and be smooth on slow twisty trails ...what would I need to do clutch wise to accomplish this...is there a quick inexpensive fix or do I have to live with this if I am not willing to buy a new clutch kit...thanks for any info...just spent enough on the machine itself...

A softer primary spring, (starting rate) will allow your clutch to engage sooner at lower rpm and possibly less harsh.
Springs aren't too expensive.

 

[canoehead]

14.5 rollers made a huge difference! I can actually just snake around without launching!!
Haven't found out if top end has changed or not.

 

[garyr]

where would a guy get these 14.5 rollers

 

[canoehead]

I got mine from the dealer. Cost $100.00

 

[Grimm]

garyr, the cheapest way to smooth the engagement is to swap in a new primary spring with a lower engagement force. Apparently the stock spring is a Blue-Silver-Blue which has an engagement force of 35 Kg, which is pretty low already. An lesser spring, like the Blue-Pink-Blue with engagement force of 30 Kg would give you a softer engagement, thus lower rpms.

Did you buy the sled new? If not, you could have a different primary spring in there. I'm guessing that you have a different spring in there because the Blue-Silver-Blue spring has a low engagement already. Have a look at the spring in there now. Yamaha springs have a black spring with three splashes of paint marking a section of the spring. Report back with what you find and I can recommend a softer spring for you.

Btw, 14.5 rollers are quite a bit more money than the spring and you get them from your Yamaha dealer.

 

[rough rider]

clutch

I put only 10 miles on sled due to no snow, but the 14.5 rollers make a huge difference, i might try a lighter spring to see if it makes a difference also.

 

[garyr]

No ...I bought the sled used and do not know if it is the stock spring or if it has been changed out...I have not had a ride on another Nytro to know if there is a difference in mine...only know that when u try to slow down and take your time this machine keeps wanting to take off thus I am on and off the gas on trails

 

[canoehead]

Re: clutch

I put only 10 miles on sled due to no snow, but the 14.5 rollers make a huge difference, i might try a lighter spring to see if it makes a difference also.

Schlick is running a Y-P-Y spring, he says earlier in this thread it's pretty darn close to where he wants it.. P.S. He's also pretty big like myself.

 

[garyr]

I weigh 165 before sled clothes...so not in the same weght class as u guys

 

[AnythingButLast]

My Schmidt Bros Stage III kit should be here friday, can't wait! Already beat my buddies 2010 F8 in 500' consistently and traded the first two races to a 2012 xrs 800 E-Tech, hopefully they wont be catching me at the 450' foot mark anymore