Z06 was a very silent partner on the track. Drove one at a track day instructing a guy. 4th gear easy drift up Omega at WSIR, but you had to feel it in the seat, because that steering wheel commanding those steamrollers wasn’t tell you jack shiiiit.
Most of the shock tuners also set the RZR up with higher ride height which does not help the situation.
Yes I know rzr/can am are spooled as well. My point being that it is the trailing arm design that causes the body roll when the rear tires scrub on asphalt. Is it a fault? Not sure, but I'll take the trailing arm and overall RG suspension design over any trailing link design. I think it was the dudes at Shock therapy that measured the scrub radius(I thing that's what they call it - basically track width change) on the pro R and it was embarrassing, something like 11 inches in the rear and positive camber at droop. Front not much better.
I wouldn’t say it’s embarrassing, just different. The track change, I’m not certain dynamically if that’s a huge deal since it’s only narrow when there’s little load on the tire anyway (nearly fully drooped). Having different track widths front and rear (like the Speed will) might make it less predictable, but this is just a guess. On the RZR, camber goes positive at the lower end, but it appears to gain camber on bump, so there’s a tradeoff.
Tighter stuff, the longer wheelbase won’t help. I assume the spring weights for each are tailored to the car and it’s weight though, so body roll should be relative. The SxS Blog guys also hoon a 4-seater RZR (not a Pro R) in the video. A lot less front wheel pickup action and overall body movement from the wheelbase. Looked more stable overall, but definitely didn’t like jamming on the brakes loaded up in a corner (which is a major performance driving No No anyway).
Hope these dates are solid. I’d really like to see a few Speed UTVs in the dunes this season.
Look at the “rear” tire camber in the last pic. The vehicle is relatively flat, but the tire is way tucked underView attachment 54981
PoPo Firebomb for comparison:
This is the side-effect of a suspension that doesn't have positive camber at full droop. What goes up, must come down, so that same suspension doesn't gain camber as it compresses. All suspension design is about compromises. This picture for the Speed is definitely worse than normal corner since caster will gain/lose camber, but it's definitely there:
View attachment 54985
You can see how the front is chewing the outside of the tire mercilessly. Bumpsteer isn't everything, sometimes you have to turn.
Yessir. Disadvantage of the semi-trailing arm is less camber gain. There's a reason every modern car that has a sniff of concern about handling has gone multi-link rear.
In that post, yes. Doesn't mean it's an invalid point though, especially since other than Speed's offering, all SxSs are some form of "multi-link" design. Since they're spending profit on a more complicated design, there's probably a good reason for it.
I have seen some pretty aggressive driving in a RZR in the hands of good drivers and there is no tip overs. I have seen people with average to below average skills tip them over.
Ayep.
I have a 2017 xpt. It's got shock tuning(Not Shock therapy), dual rate springs, and stiffer swaybars front and rear. Definitely helps keep the car more planted. But in stock form the lower trim RZR and X3 designs have a TON of room for improvement.
