09 Nytro fx setup?

[JDR]

Just got rid of my 07 Phazer and purchased a low milage 09 Nytro FX. I do mostly agressive groomed trail riding. Is there darting issues with the 2009 and if so how is it fixed? Also, the Fox float shocks look to be a huge step up from the Phazer also. Any suggestions on setup would be greatly appreciated. ( I weigh 170 lb.) Can't wait to get this sled on the trail, looks to be a Phazer on steroids.

JR

 

[bottlerocket]

You have some reading to do! Check stickies in the Nytro section....

 

[mcamzr]

You do have a ton of reading to do. I have the same and will post my set up that I found works well for me. I ride 98% groomed trail as well and stand alot. You will love the sled once you get it set up.

 

[JDR]

Wow, thats an overwhelming sticky section. Mcamzr, since you do mostly grommed trail and have a 2009 could you answer the following questions?

What ski choice and wear bars to eliminate the darting but won't cause heavy feel?

Suspension settings on the Fox floats (air pressure/clickers)?

Windshield needed? had a med yam on the Phazer.

Only get up North 3 to 4 times to ride a year and really don't have a ton of R& D time so what you have will be a good baseline.
Much thanks
John

 

[mcamzr]

I never rode with the factory skies so I don't know if mine darted at all. I put on C&A Pro Razor with 9in shaper bars and no studs. Not the combo if you want lite steering though. On the floats my last ride I ran 56 and that was great for a long trail ride and I found it good on the shudder bumps. For really rough I used 65 or 70. On the windshield I stand 70% so the stock hight is fine for me. With he way I ride I took my notes from my rev and started there with the set up. I ended up with the front and rear straps all ge way out, the rear springs set on med and the front shock in the middle as well. I'll more Ryan Lilely tweak it more but for me it's really close. I also raised the bars.

 

[sleddingfarmer]

First thing I would do is have the rear 2 shocks revalved with some good progressive rate valving. That will make the sled ride much better, and also help with the handling and steering effort.

For skis, i recommend the C&A Pro razors if you revalve your shocks. If you don't valve your shocks, you should probably look for something a little less aggressive.

For the Fox floats, I'm not a huge fan of them. But its probably time for a rebuild on them anyways. I'd send them into Fox, and at the very least have them built into Fox Float 2's. But if you want to spend the money, Fox Float X's are really nice shocks. Those are the piggy back shocks that came on the 09 Nytro SE from the factory. They'll offer a much more compliant ride while still resisting bottoming, allowing you to keep your ride height in check so you can get this sled to corner decent.

The biggest problem with the nytro in my opinion, is the bad shock valving from the factory. Very flat rate, and stiff for groomed trail riding...which makes the sled sit very tall. Valve the shocks more progressive, making the sled "sit in" its travel better, and it works sooo much better for trail riding.

My 2 cents.

 

[mcamzr]

I spoke with the guys at fox about the x shocks. There about 1500. But for 500 you can send in yours and they will put the evolution kit on them. A few guys on here have them and like them. Lower ride bight and remote res for the big hits. I thought about that for me but I might want one more year this way. But that is still up in the air.

 

[JDR]

Okay, so with this stock FX I really don't intend on doing any revalving (although I have done so on dirt bikes and does wonders) to the rear shocks, so which less aggressive ski is out there that will work well on the grommed trail?
Is there a setting you are using on the stock rears that is passable that will sit it lower to corner better?
JR

 

[sleddingfarmer]

I would just start at full soft, ride it, and start to adjust it tighter as you figure out its handling. Thats usually how I start to dial my new sleds in.

Skis are a constant discussion around here, everyone seems to have a ski they like, while others will hate that particular ski.

But I think a majority of people agree that C&As are the more aggressive ski, and Slydogs are a excellent ski thats aggressive but keeps steering effort pretty decent.

 

[raginyamaha]

http://www.ty4stroke.com/viewtopic.php?t=51542

Here is where i started and only needed slight mods from here. needed a little more spring preload on center shock and floats set at 60-65 psi. Handles sooooo much better after the changes. And get a set of curve skis, best ski on the market. I ride 99% Groomed trail and ride hard.

 

[JDR]

Was the darting issue from 08 made at all better in 09 on the FX? If so, are the aftermarket ski's totally needed for agressive groomed trail riding?

 

[sleddingfarmer]

Was the darting issue from 08 made at all better in 09 on the FX? If so, are the aftermarket ski's totally needed for agressive groomed trail riding?

Yeah they took care of the darting and "twitchy" feeling that the 08s had with the 09 and newer sleds.

Some guys like the stock skis. You will probably just have to try it out, and go from there. Or, just keep reading different threads here on TY...there are a ton of them about skis on the Fx nytro.

 

[Off Trail Mike]

JDR:

The guys posting are right. Read first, and get a plan to modify settings. Although I am on my '10 XTX so no fox floats, the sled was an ill handling beast out of the box. I did what sleddingfarmer did, starting soft and adding in stiffness. I got the ride I wanted, but could never get the front end to "rail" on corners, regardless of preload or valving. It always wanted to push.

In the end I replaced the stock ski with a powderhound 7 because I wanted a wider ski for my kind of driving, and with a longer carbide at 7.5 inches, the push problem vanished.

I don't know about the other guys but I was surprised at how sensitive the steering effort and turning performance is to changes in front suspension shock preload/strap settings. I've done these adjustments on other sleds for years to add or take away ski pressure, and you would think that with more engine weight over the skiis, it would be "less" sensitive to changes, but it's simply not the case. Maybe the skiis have something to do with it.

Bottom line, take the time to adjust, it is definitely worth the few hours it takes.

OTM

 

[mcamzr]

Also on the float's. Just 2 lbs of air up or down seems to make a difference when riding hard. Get your self a backpack or tank bag and keep the pump in there so you can get to it easy. And have a few extra bucks on you for beer at the end of the day. You will owe a friend for holding the front of the sled off the ground all day when you mess with the floats.

 

[09nytro]

Heres what i got , Powder Pro ski's , 6" shapers , No Sway Bar .
, 95 psi in shocks ( I will look in my book to see where the comp. and reb. are set ) front strap up one hole and rear up one hole with polaris wieght transfer blocks set on 2 ( Again i will look in my book for shock setting )
Good luck and have fun with it