lacking top speed, please help!!

[cannondale27]

Correct. Any black or brown on your secondary? If so scuff and put new belt on.

 

[Crf458]

Correct. Any black or brown on your secondary? If so scuff and put new belt on.

No nothing when I did the clutch kit and 8DN belt and it had about 700 miles on it at that point.

 

[cannondale27]

Good.

 

[Nytros rule]

Check your secondary, it almost sounds like the spring is not in place hard stopping, (coil binding) and not allowing it to open all the way.
With an 8DN being about 7 mm longer than 8JP the secondary does not have to open as far for the primary to reach full close so machining of the secondary is irrelevant.
Wife's sled consistently pulls 155 K and runs the belt up to about 7 or 8 mm. from the top of the primary at 8900 RPM.
My wife's 2014 XTX is stock other than WPW spring to lower engagement, and rivet position and weight changed to my liking, and is finally done break in, it has 2300 K.

 

[cannondale27]

Or maybe the spring just wont let secondary shift.

 

[michvent07attack]

Had same situation last year no top speed 143 KM was my top speed . My wife's 600 etec went by me like I was stalled . didn't like that at all so went out and got mxc 190 hp turbo kit . 160 km in a heart beat . But have a friend with a xf7000 he played with the clutches he get 100 miles per hr. and good ski lift .

 

[Crf458]

Check your secondary, it almost sounds like the spring is not in place hard stopping, (coil binding) and not allowing it to open all the way.
With an 8DN being about 7 mm longer than 8JP the secondary does not have to open as far for the primary to reach full close so machining of the secondary is irrelevant.
Wife's sled consistently pulls 155 K and runs the belt up to about 7 or 8 mm. from the top of the primary at 8900 RPM.
My wife's 2014 XTX is stock other than WPW spring to lower engagement, and rivet position and weight changed to my liking, and is finally done break in, it has 2300 K.

When I'm back home I'm going to swap belts back to the 8jp belt and see what the difference is and shim my secondary to raise my deflection ( it's fine now just to say flush but want it 1.5mm abov). The secondary spring was having an issue with sticking open when I was installing the clutch kit but it was only because I didn't rotate the helix clockwise and set the teeth in the appropriate spot. Called Allen and he explained how to set it properly and it seemed to be fine now with no binding

 

[skidooslayer687]

What's your tip weight??? Had this issue with mine when I started trying to figure out clutching... Wasn't enough tip weight to fully shift out

 

[cannondale27]

When I'm back home I'm going to swap belts back to the 8jp belt and see what the difference is and shim my secondary to raise my deflection ( it's fine now just to say flush but want it 1.5mm abov). The secondary spring was having an issue with sticking open when I was installing the clutch kit but it was only because I didn't rotate the helix clockwise and set the teeth in the appropriate spot. Called Allen and he explained how to set it properly and it seemed to be fine now with no binding

Cool. Why keep changing belts? Stick with one belt.

 

[skidooslayer687]

X2.... Change back and forth you won't see positive/negative results from what your changing in the clutch

 

[Crf458]

Cool. Why keep changing belts? Stick with one belt.

More or less out of curiosity, at this point I'll try anything to figure out where my speed is going

 

[Curtis Chambers]

Join the club lol

 

[Mopar123]

I got a 129 SE that wont go over 84, COME ON YAMI -CAT. F-IN JOKE. You shouldn't have to mod up a new sled to get it to 90...lol

 

[skidooslayer687]

And what have you checked On your machine to verify that there isn't a problem or a reason it's doing 85?

 

[Mopar123]

And what have you checked On your machine to verify that there isn't a problem or a reason it's doing 85?

Well other than asking the dealer to tear it down, the basics, belt track tension, ski ali and he test drove it no codes or anything. Plus i have 2 of them! they both go the same speed so i dont think its the sled.