Tech Tuesday // Polaris RZR Pro R Suspension Geometry
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- Опубликовано: 15 сен 2024
- Polaris RZR Pro R Suspension Geometry
Shock Therapy Pro R suspension upgrades: shocktherapyst....
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Love some suspension tech on tech Tuesdays!
Another awesome information video love the pro r content
Thanks or the video. My Turbo R has 3/8" bump on the front from ride height to full droop. I am happy with that!
Awesome content on the channel guys!! Great to watch all your products and cons of and the ideas behind the different manufacturers! Great work shock therapy!!!!
Thank you! We will try to keep it up. 👍🏼
Awesome to hear you're coming up for takeover, hope you enjoy the Oregon Dunes!
At full jounce people should factor in tire squish. A good rule of thumb is 25% of the tire thickness will be squished at full jounce. So even if you factor in that to PRO R you will still clear clear the ground. The can am when you factor in tire squish will absolutely lay frame on the ground meaning you will hit ground in a bottom out situation before the tire is fully squished.
I use two 36" straight 1x12" leaned up against the tires as an alignment toe plate
As far as alinement tools, ST should be a dealer of Motive Engineering alinement kits. They are the best and make them for UTV’s, bolt patterns. Many of the top UTV race teams have the Motive alinement kit. They have even been used at Dakar.
Also I wished you would have talked more about the negative camber the front has at full droop. Polaris did that as they did not want to sacrifice wheel travel #’s as their CV’s can’t take the angle. Between the negative camber and the 13 inches of track width, it’s not a good thing.
Agreed on all points. We mentioned the negative camber being a CV reason but just quickly since the show was long already. We will address it in detail later. I would rather have 18” of negative camber gain top and bottom, limit track with scrub, ALL day before 24” of the Pro R geometry. JMO.
18” of negative camber gain? I’m not clear what you mean by 18 inches of gain? Can you explain?
You guys spoke about slow motion video of the rear toe bar flexing. I saw a slow mo of Matlocks Pro R at full droop, then going into compression. With the negative camber and big track width change I was shocked at how much abuse the tire sidewall was taking.. I’m surprised they are not seeing more front tire failures.
@@toddcunningham2410 what I meant was I would rather have 18” of travel with proper negative camber gain at full comp and full droop, creating limited track width scrub over the 24” travel of a Pro R geometry any day.
Got it! That’s what I thought you were saying but not totally sure. BTW I also meant the Pro R has Positive camber, not Negative like we both agree would be better. Big travel numbers mean nothing if it’s not balanced and does not work. Back in the day we limited a couple inches of rear wheel travel on the Jimco 10 car. Reduced cv angle and the car did not have weight to need as much droop. Car felt more balanced after taking 2 inches out. I would not of beloved it, if we had not tried it. Skipped off the tops of the bumps vs trying to drop in the holes.
Great video, now if I could only get a Pro R!!
Why did speed utv rip the trailing arm lack of radius travel?
Can you guys look at the turbo R? Would the suspension be exactly the same or slightly worse than the Pro R? Thank you.
It is identical. There are small differences in parts like sway bars and links but the geometry is the same.
🏆🏆🏆👍🇺🇲🙏
Thank you for sharing.
Robbie’s car’s rear doesn’t change much not that you know yet sort of like the previous Can-Am Commander. I know that design needs to be wide to get any real travel
RG S CAR WILL BE THE BEST SUSPENSION OUT OF THE BOX AND I HAVE A PRO R 4
@@allmotorhash Can you give me some insight in to that? Have a fully done X3 max and have a Pro R 4 Ultimate coming.
@@Charlie-go6eb pro r has 13 inches of track width scrub meaning the the tires move in and out sideways and scrubs the ground over 6 inches per side thru full cycle. Speed utv car supposedly has no scrub.
Never go full droopy!
How do we ask questions when your live
Just follow us on FB or IG live and you can type in a question any time
@@ShockTherapyllc what time today
@@MEATY_BULL normally 12:30 MST. But I believe it is postponed due to testing in the field. Give us a call at 623-217-4959 and we can answer anything you like
Question can I change the razor s suspension 71 width without changing shocks. I know arms and axles needs changing but is this possible. Thanks
Yes. Most long travel systems widen the UTV while using the same shocks. More spring and valving is needed but that’s very common.
So I will have no problem switching back to 64 in
With the shocks I have on it those dynamic ones . I wasn't sure because of length they will attach right
@@vinsonolson7921 check with the manufacturer of the long travel kit to see if stock shocks will work. Most of the time, new springs and valving are best for stock shocks on a long travel.
I understand that bump steer is bad. And you strive to eliminate it. But will you explain why you say scrub is not important. And why dont manufactures try to eliminate it with unequal length A arms like the KRX and the new Speed utv. Why dont they try to keep the bottom of the tire where it makes contact in the same location. Eliminating scrub especially at compression when all the weight is on it
It is important. It’s just not as important as a lot of bump. If you look back you will see a video we did on the KRX. It’s the best geometry on a UTV in my opinion. It also has zero bump and ver little scrub width change. I love that UTV it just needs power.
Bad bump will cause parts failures, feed back, broken fingers and twitchy steering and traction. Scrub width just drops traction but without the rest of the issues. That’s why I put it lower in importance than bad bump. The manufactures don’t spend time on scrub because they need the BIG travel number to sell UTVs. Less scrub means less travel due to CV angles that uneven A arms create. Personally I would rather have a perfect 18 inches of travel than a bump steer and scrub width 24 inches but it isn’t sexy fir marketing. Just my opinion. 👍🏼
Also i would add you need a ton of axle plunge if you want big travel and no scrub. We all know about arctic cat xx axle issues. It’s all a trade off. I will take scrub with a more travel and more reliability over a RG trailing arm setup. He doesn’t have this much travel even with the benefit of 77” wide.
@@tristanhipps604 you are incorrect about the speed. It is using different and exclusive cv joints than the xx. The 77 inch car has 23 or 24 inches of travel . And doesnt share any components with the xx. The new speed stock should walk away from any car with radious rods. Not even close when it comes to handling. Class 10,class 1 true trailing arms.
Got a nice east coast set up for the pro r walkers?
Yes sir. We got walkers dialed for you
Orange and red don’t go together
Scrub city