make your Nytro rock, some critical suspension settings

gormleyflyer2002

TY 4 Stroke Junkie
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I love this sled, it rocks, the best sled I have owned by far. I will admit I was worried after my first few rides.....not now.

I hope this will help some of the guys struggling to find the sweet spot on this sled.....it can be done, for me anyway.

After 800km I have a better idea how to get the sled to work well, learned a few things along the way......some bad but mostly I'm very happy with this sled. This has taken a while as I have made small changes every time out.

RTX, Ohlins hy/lo front shocks, pilot skis, 96 studs. (230 lb pilot)
I like un groomed trails and tend to ride like a nut job according to some.

Below is a good starting point for trail riding set up.


My main complaints being, generaly clumsy handing sled, ski lift, tippy, unstable, and the dreaded but kinda fun sometimes wheelies.

This sled is very sensitive to ride height, the smallest adustment has a very noticible effect on handling.....some settings contradict what I once thought or knew from previous sleds. Its very much a balance, change something at one end and you'll find it affects the other end and yes you will adjust again till your down to only nit picking. It's actually good that the sled is this sensitive, it can be tuned for most everyone I'm sure

Skis
Ski-Doo Pilots, personal preference for me, for sure not aggresive enough for anyone riding in loose or deep snow. I hate heavy steering sleds and these work great. A great ski for packed, beaten and rutted trails in Ontario.....they would push in anything loose. If you stand mostly and like to load the front end then they are perfect.

Limiter strap (front)
Moving up one or two holes helps fight the weight shift wheelies. Other than installing a different coupling block, this is the best method to control the weight shift without spendng money or mod the skid location. The steering is not much heavier even on the 2nd hole and you can still get the front end light or up and over trail bombs.

Center or front track shock,
This shock is critical and has the most effect on overall sled handing and ride.
I'm sure guys who have lifted their limiter strap have now noticed more ski lift in corners and harsher and unstable ride in the trail junk. I lifted the strap 2 holes and have the spring preload showing only 1-2 threads. If you haven't changed your spring preload after moving the strap either 1 or 2......do it now, it makes a MASSIVE DIFFERENCE. I'm heavy, can't imagine anyone under my weight showing anymore thread. It's not hard to do on the side of the trail.....play with this spring. If you go to light on this shock spring preload it feels like you blow through it and get donkey kicked by the rear end.......this is the balance, start from a very light spring preload and adjust it to you find what you can live with. Adjust it so you can find the best ride in the stutters. It's a different setting for those that stand or sit.

Rear shock/spring
I have the springs on hard, stock blocks, have heavier springs on order.

Clickers
I find that adjusting them to hard settings only makes the small bumps harsher and does nothing for big hits and "g" outs....this is a negative of the shock. I have the front track shock @ 7 comp / 8 rebound from full hard. Rear shock, comp 8, rebound 8.

Front shocks.
I ditched the Fox floats.....I have Ohlins with 1.9kg springs so maybe not apples to apples comparison but it applies IMO. (base nytro er springs are 1.7kg) This is maybe where others will disagree with me. I found with both the fox and my ohlins that the sled handles better with either lower pressure or light spring preload. I have maybe 8mm prelaod on my shocks. For some reason when I make the front end stiffer or tighter it makes the sled very spooky and dump truck like. It just seems to handle and steer handle much better with looser feel for some reason. I found when it was set up hard it just seemed to be tippy and felt bound up and had no give or bite in corners. Not sure it makes sense to me but it has worked much better this way. I think it might have something to do with the sled having a very stiff chassis, I found this back in my MX days when we went from steel flexie frames to stiffer alumium one.....suspension had to change also......we ran softer suspension to make the bikes turn and handle.!!

some of the above are also hints that "08Nytro" has mentioned, although he's biting his tongue mostly due to racing secrets......the bugger.

This sled requires that you move around a bit and works best when standing....I'm afraid sit down or APEX guys might be better of on.......well, an APEX or ATTACK.

Mine now handles like an 03 REV only better.....but with a really freaking fun motor. this is a good thing. well done Yamaha...!!

ps you gas milage will go down when you get this sled set up.....it's way to hard not to flog the life out of it.

oh yah, my warmers suck, feet are damp......who cares.
 
Great post!

I will start tweaking my susp when there are some trails to do it on.. Almost all the snow we had is gone... :o|

Man Id like a set of Öhlins allso... ALL AROUND!!! :Rockon:
 
Good post
Makes sense about the center shock pre-load since the sled is pretty harsh in the stutters.
 

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gorm; is it a mistake changing the floats to the standard fx shocks? I wonder can they be bottomed out?
 
i have both, i will test them back to back over the same trail and give my impression for what its worth,so far i love the floats on this sled.
 
Looks like im going to drop the pressure in the floats and lighten up the preload. I cant ride at home so the next time I get to the Hill ill hopefully feel the difference
 
Very good post!

I was nodding my head with most everything you said!

I think one thing you said that I haven't seen before and is OH SO true.. The sled IS sensivtive to suspension settings and some of us have been saying all along MAKE single small changes and evaluate what you like or don't like.

No this sled isn't for everyone BUT for the targeted group with some tweaking this sled gets it on out on the trail. Ok and with some additional aftermarket parts this sled ROCKS!!
 
Great post!

I was finally able to put some miles on yesterday....here is my story...

200 miles in Gaylord in very warm, semi-slushy conditions.

Floats: Started out at 60 on each side and knew pretty quickly that it was too much. I dropped it down to 45 and feel like I found the sweet spot. It cornered flatter and had pretty much zero inside ski lift. For whatever reason, I have never had to run high (Stiff) pressure in my front shocks, even on my rev.

Limiter strap: Pulled down 2 holes.

Skid shocks: started out with compression at 8 and rebound at 15. WAY TOO MUCH!!! I felt like the rear of the sled was dancing around and I had to be pretty cautious through the bumpy turns. Dropped the rebound down to 11 and it worked so much better. I felt like I could accelate through the bumpy corners. I feel like I compromised a little with my ride height. Luckily the bumps weren't that big, but I will have to do some more experimenting when that time comes. I feel like I have a pretty good groomed trail set-up. I realize that the springs are going to continue to take shape, and settings will have to be updated again.

The only thing I am really struggling with is the warmers. First, the controls are horrible!!! There were a few times when I wanted to check to make sure they were on, so I hit the button....only to have it go back to 0! A simple fix would be to be able to hit the button to see where you are at. Next.....and most important for the warmers.....is the lack of heat. It was 35-40 F and you couldn't even feel them 95% of the time. I am hoping Yami will come out with something to correct this....

My overall impression is the sled is VERY good....and will continue to get better as I continue to educate myself on learing set-ups.
 
Great post! I posted "A bit too stiff" before reading this. I could have saved a little server space.
 
if you went 2 holes on the front strap.....you'll most likely have no threads showing on the center shock if you sit a lot.....maybe one or two if you ride hard or stand mostly.....or fat like me.

or....options "B" use special Yamabond glue to keep your falsies in place on the local stutter rail-line....LOL.
 
Sorry I'm confused?

What do you mean by "threads showing"? I assume you mean threads exposed below the adjustment rings? But isn't that towards the very soft end, or little/no preload?
 


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