Wow thats the first I've heard about that one. Mine wants to jerk (little Bit) when running along and parralel (sp) to tire tracks in the sand,but on hard pack it's fine. Does you alignment look ok?

 

Definitely check your alignment. My S came from the dealer with a little more toe-out than it should have had and displayed some unsavory handling characteristics. Nothing like what you've described, but it would wander around a little bit. If yours has too much toe-in it could cause snap oversteer like you've described, but it would have to be pretty drastic to actually put the rig sideways, I would think.

 

Well not completely sideways but easily 45 degrees (often less).. And it happens pretty much as soon as both the front tires have different traction. I'm surprised this is a surprise to you guys, I talked to several RZR owners I met and they all acknowledged this problem to various degrees. IMHO it's the fact you aren't doing any weight transfers like you would on a quad so any bump that affects trajectory a bit can't be seamlessly corrected by your posture.

Heck, in snow the stock S is pretty much undrivable, it's all over the trail.. Left-rigth-left-right and you need to be reaaaaaly gentle on the gas...

Bleh, guess I'll check alignment.

 

I have found that both my S'S do that.i belive it caused by the tires and the locked rear end,i am gonna try some 8 ply pit bull tires to see if that helps.Frank

 

Doesn't sound right to me. Never heard of this.

 

Since I don't have a RZR (yet) I'll have to refer to when I raced Superlites in the MTEG series.

I would check the toe of the frontend. When I had toe out on the Superlite it "searched" much like you discribe. Running a slight toe in condition cured the problem. Only about 1/4" on each wheel (1/2" overall). I would try that before buying new tires. If it doesn't work, you spent nothing finding out.

 

Rorhound is right here. X2,

Also being that the RZR is quick along with track width ratio to the short wheel base will also naturally cause the Darting or swapping.

 

Make sure your tie rods are under the spindle arm and not on top. What you are experiencing is Bump-Steer.

 

For some of US uneducated, steering impaird folks,
WHAT IS BUMP-STEER?
The Backyard Clutch Tester
Bart

 

these thing have terrible bump steer make sure its toed in at lease the 1/4 to 1/2 "
more toe in means more grip in sharp turns toe out means more swaying and better sliding in turns

 

Mine was doing that it had to much toe out adjusted and it's fine now.

 

I dont think mine has ever done this that I can remember.X2 on checking alignment

 

Sound alot like the post i put on here last week. I couldn't find anything wrong so i'm just going to drive it intill i find something or it breaks. good lock hope some one can figure it out and let us know.

 

There is nothing wrong, its just the nature of the geometry.

 

I has my two neices with me and about took out a tree as the RZR was thrown about like a rag-doll for no apparent reason when I was going down a snow packed road. I will have to check my toe in. Another point with the RZR tracking in the snow that I hate is on smaller trails at low speed with a slight off chamber, the back end of the machine was constantly sliding off the trail. The atv's with me had no problems. Any reason for that?

 

Do the regular 09s have the same axle-diff problems with the axle poping out? That sounds extreme for bump steer (not saying its not bump steer) IMO. My 09 S axle has popped out a couple of times. It only seems to happen at 30+ MPH.

 

this can also happen if you tires are not at equal pressure

 

I'm running at 1/8" toe out, mine slides around in the snow when I get on the throttle due to wheel spin. Did a whole year of all kinds of riding with no unexpected slides.

 

Alignment was the issue, case closed... I was at 1/2" toe-out, now at 1/4 toe-in.

 

No issues here in the snow or anything. I can induce a flick with the proper steering input. I would say you probably could take most of the problem out with a proper alignment.

Toe out will give good initial turn-in but poor straight line stability (a wandering feel)...specifically at high speeds. To much toe out will make you very unstable at high speeds. I wouldn't go over 1/8" toe out. Also, toe differences, like a lot of toe on one side and not alot on the other can cause all kinds of wacky steering problems. In general, if you go toe out, stay at 1/8" or less and make sure the toe is even.

Toe in gives good straight line stability and will want to self center, giving it a riding on rails feel, but steering response is decreased, specifically at slow speeds.

Camber is a who other topic.

In general, if you want to play it safe go with 0 toe and a little bit of even negative camber all round. Personally, I like a little toe out in the front and 0 toe in the rear.

 

Is there a toe adjustment in the rear on the RZR?
Is there a camber adjustment up front?

 

That im not sure about.

 

i just see this bump steer ? take your shocks off and move the suspension up and down and watch as the tires go in and out ! on the rzr its a lot ! id bet the S is better !
and you cant fix the rzrjerk im not broken !

 

That is somewhat surprising...are there camber kits available. What adjustments can be made front and rear regarding camber and toe?

 

The only adjustment on the OEM suspension is the front toe.
The LSR +8 kit has a cool way of doing the caster adj. you get 3 settings of adjustment, but again no camber......it is what it is.
If you buy a LT kit that uses hime joints then you can adjust the camber FST for instance

 

I have a racertech +3. They claim that their tie-rod setup is the best out there for reducing bumpsteer. I can not say if that is true but I can say that it works great.

 

I have had 3 different LT kits, they all have there little/large problem areas, steering is a big one......LSR seems to have a jump on the other 2 I have used