Need some clutching advice

[customnytromtx69]

Hello I am new to the site but have been reading forums on here for a long time and many of them helped me greatly (ex. the apex heavy duty springs in the rear skid on a nytro really improved my sled) I have a 08 fx nytro mtx and I live 1800 ft above sea level and i need a good clutch set up. Currently in my sled is the stock weights and rivets with a blue brown blue spring. my engagement is 3400 rpms roughly i would like it close to 4500 or so. any suggestions??????

 

[Turk]

Buy a set of drag n fly weights from supertorquer & I can get you close.

 

[customnytromtx69]

Alrite i will order that kit asap. To tell you the honest truth i have no idea what is in the sled for a setup besides the primary spring which is blue brown blue coding on it. It is a different setup form what comes from the factory because the mechanic said when it was assembled he put the tech update kit in it which consisted of the blue brown blue spring and weights and rivets and whenever i ask him straight out he gives me the run around.

 

[Turk]

As long as your only 1800'(similar to me) I can get you close to what you want. Very important..when you order the weights specify you need a red yamaha primary heelclicker spring.

 

[woodsrider]

How does your sled run besides the engagement? If all you want to do is increase your engagement rpm all I would do is change your primary spring. 4500rpm engagement seems high to me. I agree 3400 is low I would shoot for 3800-4000rpm.

 

[customnytromtx69]

The sled runs good besides the engagement dosent bounce of the limiter or anything but i find she engages to low for the way i ride. According the the service manual for the machine the blue brown blue has the highest preload number so there isnt a stiffer yamaha spring

 

[akvector]

I find that the blue brown spring is too much engagement. Mine is closer to engaging at 5,000

Turk what is setup to get for 4000 feet?

 

[Turk]

I never played with clutching on that sled at 4k elevation but i would go 4.7 grams arm, 3 grams mid; rest empty with red hc spring using stock secondary@39 helix.

 

[woodsrider]

It seems odd that your engagement is that low with that spring. Did you verify that infact that is the spring you have or are you going by what the dealer told you? You could shim the spring to raise your engagement. Perhaps it was miss marked from the factory. Try another one.

 

[customnytromtx69]

it is for sure the blue brown blue i removed it myself

 

[yukon yamaha]

go to an epi purple spring at set it to 20 degrees!! that is the ticket