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ice age pro motion thoughts

S

snobyrd

Well-known member
I installed a pro motion yesterday, thinking it would be a trick add on for harder sno, so today i tried it and at least 4 times i countered steared from a stop to put the sled on its edge and i lost traction, i had to level the sled out more to regain traction to transverse accross creek walls.
It apears to me that the running boards bottom out to the side and the trax edge looses traction.
Has any body experience the same thing? Please share your experience with the ice age pro motion.
Im thinking right now ive wasted 500 cdn on a gimick that dont do the axys any favors....:juggle:)
 
I ran the pro-motion on my last Pro RMK and it seemed to work pretty well. No huge complaints at all.

Now that I have an Axys, honestly I'm not sure if the Axys needs pro-motion???????
 
Just my two cents!

I have not rode one (from any manufacture), but I've always been of the opinion it would hinder the tight, steep, technical side hilling we have come to enjoy with the rigid rear suspension. With the rigid rear suspension and square edged track you can cut / pick your line.

Leave the teeter totter type rear suspensions to the meadow mashers where laser precise lines are not needed and there is room for a larger margin of error. On a steep side hill with a teeter totter rear suspension (with or without flex edge'd track) it is going to try and washout that much quicker / easier. As the rear suspension is flexed more parallel to the slope and there is no surface on any track made to stop / slow the sideways slide that will surely happen.


"Show Room Tip In" has NO Real Correlation to Real World Riding! It is the exact opposite, it is a detriment! And has Zero Use on a Real Mountain Sled (AKA Polaris PRO RMK or AXYS RMK)!


Keith Curtis rides a EZ-Ryde Carve on his full mod Hillclimb sleds, but when asked. "He leaves them locked out all the time when he is not competing!" It just has no place in the woods!

It's a crutch developed by Skidoo to make their boat like meadow sleds seem to handle on the show room. Period!

Don't waste your coin, unless you want a gimmick sled with all the ill conceived crap on it.

Again just my two cents.
 
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Im thinkin this mod is a degrade for powder riding as it causes paneling out, it might b ok on hard pack. I thought a product comming from ice age would have top notch function but imho it takes away what makes the axys so great.
 
The axys (or any sled for that matter) doesn't need it. If you want your sled to be easier to lay over the 36-37" front does way more than the pro motion ever will. You will also keep the predictability with the 36-37" front.
 
The axys (or any sled for that matter) doesn't need it. If you want your sled to be easier to lay over the 36-37" front does way more than the pro motion ever will. You will also keep the predictability with the 36-37" front.

But you'll still panel out sooner ...
 
I really don't get these washing out, tippy front end criticisms. I have been a tree rider since almost forever now #ancient, and spend my time doing every ridiculous move I can find out there. The floppier a sled is, the closer to perfect in my books. I can pull off stuff and make quicker moves with the narrow front end and promotion. Honestly I don't know if both are required, but I love my sled. I guess it all comes down to riding styles.
 
I really don't get these washing out, tippy front end criticisms. I have been a tree rider since almost forever now #ancient, and spend my time doing every ridiculous move I can find out there. The floppier a sled is, the closer to perfect in my books. I can pull off stuff and make quicker moves with the narrow front end and promotion. Honestly I don't know if both are required, but I love my sled. I guess it all comes down to riding styles.

And by stating that you just make everyone else aware that you haven't found the limits of your sled. (That's ok!)
Only when you progress to steeper terrain where tippy, washing out, twitchy becomes a hindrance instead of a help will you begin to understand.

FWIW i mean this in all sincerity and good will.
 
And by stating that you just make everyone else aware that you haven't found the limits of your sled. (That's ok!)
Only when you progress to steeper terrain where tippy, washing out, twitchy becomes a hindrance instead of a help will you begin to understand.

FWIW i mean this in all sincerity and good will.

I appreciate that you are saying that without any attitude and thanks for that. However I have and do sled with many groups. Many local groups, have lived in BC myself and still don't see it. Probably never will I guess?!? You realize you are pretty much saying that no BRP rider can follow you. I maintain they can, with less effort.....unless you at least narrow up.
 
For me I am just looking for a little help for an old fat man. In some situations the Ski Doo guys seem to struggle a little less than me. I am not sure how much of that is the T-motion. I am not the guy that can sidehill a Polaris mustang with a big block Chevy across a cliff. I just am looking for a little help on harder snow with the least possible compromises. In the end the cost of admission to find out is 300 bucks.
 
I really don't get these washing out, tippy front end criticisms. I have been a tree rider since almost forever now #ancient, and spend my time doing every ridiculous move I can find out there. The floppier a sled is, the closer to perfect in my books. I can pull off stuff and make quicker moves with the narrow front end and promotion. Honestly I don't know if both are required, but I love my sled. I guess it all comes down to riding styles.

Have u ever lost traction from a stop while on edge , say 45deg, thats my complaint.
 
Have u ever lost traction from a stop while on edge , say 45deg, thats my complaint.

Yup, but also before installing it. Don't you think that is far more a factor of snow conditions? I really think it has far less effect than you are thinking. Only on hard pack could you even tell it is there is my observation. With the pivot at the rail, rather than raised as with the t-motion, the "wiggle" is far less.
 
Yup, but also before installing it. Don't you think that is far more a factor of snow conditions? I really think it has far less effect than you are thinking. Only on hard pack could you even tell it is there is my observation. With the pivot at the rail, rather than raised as with the t-motion, the "wiggle" is far less.

I have a very steep wall , near verticle that will be my measuring stick, ive rode it twice this year with no issues, so wen we get more new sno i will go back to the same area and try it with the pro mo.
My only qusetion i have in my mind is, i have raptor shoxs and thier pretty soft, im questioning in my head if my suspension is colasping and causing my boards to panel out.
Im gonna pull out the rear shox and reinstall the stock shox and spring.
 
From what I can tell, as you sidehill with the promotion or t motion the rails are always flexing away from the hill, essentially acting like a spring that's under tension. When you hit any irregularity in the snow the rails try to twist back to where they belong and in doing so you lose your edge. The steeper the hill the more you can feel it. The sled will just twist away from you and there is nothing you can do to stop it.
 
My hands-on experience on one of my sleds, ~700mi.

PM's effect in soft, deep snow is minimal, it does initiate roll abit faster, but not alot.

Harder snow is where it's most noticeable, and primarily to initiate tip in - easier if less than ~15 degree (?) negative sidehill slope, but if more than that, it works against you, until you get the track set. When the PM goes 'active', it induces preload into the rails - as others have correctly noticed, rails are twisting - and until the preload is released, it can also work against your change in roll/direction. It can require less input, or in some cases more input, depending on the specific terrain. It's most useful in hard snow and moderate terrain, and adding some playfulness in the soft.

On steepest sidehills it adds some unpredictability - it should - rails are loading and unloading.

Tip in is more subtle than the T-mo's I've ridden, but you are dealing with entirely different chassis dynamics - comparing them without pointing this out is kinda dumb.

You will not be railing corners on a trail with a PM - think land yacht, Crown Victoria.

I ran it for a few months last season cause I got one cheap, and went back to rigid for the predictability.

Like most aftermarket mods, if you have no longer-term hands-on experience, it's best to listen, and just look dumb, instead of proving it by pushing an opinion. Of course, no offense to those of you who have that experience - you're proving the point that experience matters.
 
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I've ridden the Pro-motion on the Pro with a narrow front end and it works, if "you" like the handling characteristics. Now on my Axys, I don't think it needs it but others may say different.

It comes down to what "you" like and what you feel comfortable with. To say that it sucks or its the greatest thing, is really relative to who is riding it.
 
I've got the Pro-Motion (Axy-motion) on my '16 with the ZRP Narrowing spindles running the skis on the narrowest position. Rode it for the first time last week and without ever riding it stock, I don't really have anything to compare it to. I know I sure liked the Pro-Motion with the Narrow Spindles I had on my Pro last year. One of the guys I was riding with who has significant time on an Axys jumped on mine for just a brief while and he said he was definitely more tippy than his 39" Axys (which was to be expected). I liked it, I think I would maybe widen the skis out 1 position for next time just to see how I liked that. I wouldn't tell someone to not get it, its a pretty cheap aftermarket piece to try out!

Chad
 
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