Did anybody else see this? I am not sure exactly how this works. It looks like they removed the ski spacers. Then installed an exhaust spring to hold the ski to one side. This system allows the ski to float essentially changing your ski stance while riding. They installed them on there mod race sleds. I would think that the ski would be held wide for more stability and then when sidehilling it would slide in making the stance narrower.
Cat pride magazine M-series ski mod
- Thread starter BigRed118
- Start date
i think it will work great in the trees, i sometimes get a little close to those pop up trees. i plan on trying it on my 800r and on my kids m6, it cant hurt. possibly more wear on the skis from sliding on the bolt
I would think some sort of thin rubber bushing would stop it from hitting too hard side to side.
Works wonders and helps take out some of the darting on the trail on the ride home.
They're 440 Sno Pro springs and I ran them on my two M8s last year. > Springs <
It doesn't hit hard side to side and if you didn't know the springs where in there, you'd never know it as a rider. In last year's adventures found that it is nice for bouncing off tree trunks as it gives a 1/2" of movement for the ski to take the hit.
Theoretically the spring provides a wide ski stance when you're just cruising down the trail and when you lay it on its side for a carve, the spring will compress and automatically narrow up the ski stance. The best of both worlds.
As for darting, can't say that it helped any - Trails are dumb on many levels anyhow.
It's an inexpensive, easy, non-invasive mod that is easy to put back to stock if one doesn't like it.
It doesn't hit hard side to side and if you didn't know the springs where in there, you'd never know it as a rider. In last year's adventures found that it is nice for bouncing off tree trunks as it gives a 1/2" of movement for the ski to take the hit.
Theoretically the spring provides a wide ski stance when you're just cruising down the trail and when you lay it on its side for a carve, the spring will compress and automatically narrow up the ski stance. The best of both worlds.
As for darting, can't say that it helped any - Trails are dumb on many levels anyhow.
It's an inexpensive, easy, non-invasive mod that is easy to put back to stock if one doesn't like it.
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snopro spring on ski
attached is the photo using the snopro spring on the ski, they were using this
on the M7 to help let the front suspension move more on the hard pack. this would help with the darting, it actually let the front end compress easier.
just thought i would pass on the photo. RM
attached is the photo using the snopro spring on the ski, they were using this
on the M7 to help let the front suspension move more on the hard pack. this would help with the darting, it actually let the front end compress easier.
just thought i would pass on the photo. RM
Dug up a photo...
Yes, and welcome to 2004. 
In the Cats Pride Mag I have they used an exhaust spring. Looks like they drilled a hole in the ski and hooked it to the spindle. I like the spring you guys are using much better. But it looks like it would only work on the new SnoPro spindle or maybe a SkiDoo spindle?
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Why is Cat using an exhaust spring and not this set up? Does the collar on the ski bolt stay put?
I have been running this set-up for a couple yrs. I used an inner spring from a tripple valve spring that had a .75 id. Cut it to 1.00" and works great! I first used a thick rubber grommet, But lasted only a couple rides. You can watch the skiis move in and out through the bumps on the trail, Which removes some of the scrub and makes the suspension work easier, I am sure the bushings would benefit also on the A arms! Just make sure you are toed properly, Or it may dart? As for side hilling the upper spring should compress all the way in to narrowest stance. Oh, And there is less wear on the steel sleeve as it is sliding side to side, Toss it and replace with aluminum sleeve ta boot!
Mike
Mike
'Anybody know on the exhaust spring intead of the 04' set-up?
Just get the sno pro ski springs. They're only $4 ea. Does help alot with darting on the trail, otherwise you don't even know they're there. And they doo look too big, but they stay put just fine on the ski bolt.
They still dart on the trail some, but with the springs soaking some of the movement up its not as much.
One bad thing I've noticed is big rubber snubber to keep your skis from flopping up and down slide across the top of the ski and it ruins it after ahwile.
even with the ski springs installed I've still managed to break all my A arm bushings hitting whoops too hard I suppose.
I've also bent the bolt holding the skis to the spindle very badly.
I'll be getting delrin bushings soon.
One bad thing I've noticed is big rubber snubber to keep your skis from flopping up and down slide across the top of the ski and it ruins it after ahwile.
even with the ski springs installed I've still managed to break all my A arm bushings hitting whoops too hard I suppose.
I've also bent the bolt holding the skis to the spindle very badly.
I'll be getting delrin bushings soon.
Dont know about you guys or how many miles you get in a season but during the course of one season the grease wears out enough on mine that I have to use a hammer to get my bolt out to re-grease (need to get some zerks in there). Have a hard time seeing this work unless you lube it religiously to keep it's slidability. Not only that but even when sidehilling the pressure isnt diagonal along the bolt to enable it to slide (I wouldn't think anyway). I guess without the spacers it is freed up more to move around???
Weekday Warrior: it moves enough to wear the top of the ski out??? Does it stay moveable through the whole season or do you guys need to grease them often???
I'd be interested to see someone put an o-ring around the bolt up against the spindle and check after a ride on the trail or over the course of a day to see if the o-ring actually gets moved or how much it gets moved. Anyone want to test it out???
I believe you guys and I guess nobody would do this if it didnt work or benefit in some way....
Weekday Warrior: it moves enough to wear the top of the ski out??? Does it stay moveable through the whole season or do you guys need to grease them often???
I'd be interested to see someone put an o-ring around the bolt up against the spindle and check after a ride on the trail or over the course of a day to see if the o-ring actually gets moved or how much it gets moved. Anyone want to test it out???
I believe you guys and I guess nobody would do this if it didnt work or benefit in some way....
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Do you have an open trailer? Mine ride in an enclosed trailer and this fall going through the sled, the ski springs and sliding ability were still just fine after sitting all summer. There was still grease on the bolt.
No, the sliding won't wear the ski out. But it did cause the rubber bumper between the spindle and my Powderhounds to get cocked out a bit.
As for compressing the spring when sidehilling, it works like a charm - The pressure on the ski cutting into the snow translates directly to the longitudal axis of the bolt.
With the springs installed, the skis move back and forth every time the front suspension moves. No need for a O-ring, just hang off the bars and watch it.
Its always on a sled deck and most time sits in the middle, I make sure to pull my cover down over the bottom of the spindles covering the ski bolt b/c I've always felt it should help. Does make a difference still as my buddy whose sled is always on an open trailer just had to cut his ski off as a press at the cat dealer couldnt even get the bolts out.
Sounds like i should give it a try as it seems to be best of both worlds between stability and roll-over.
I have my sleds on an open trailer a lot of the time and it gets hammered with slush and mud....I hate it. The grease stays on the bolt though, I use waterproof stuff.
As far as the ski going back and forth on the spindle you can see it as you go down the trail and the ski tries to follow different tracks (darting)
Oh one other thing I DON'T like is when you go around a corner hard the spring collapses and shortens your stance...easier to come up on one ski, slower around corner.
As far as the ski going back and forth on the spindle you can see it as you go down the trail and the ski tries to follow different tracks (darting)
Oh one other thing I DON'T like is when you go around a corner hard the spring collapses and shortens your stance...easier to come up on one ski, slower around corner.
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