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Darting.

Noquater69

Noquater69

New Member
Messages
10
Age
58
Location
New york
Country
USA
Years Snowmobiling
17
Snowmobile
800 rush pro s
Riding for the second time rush pro s. Trying to file it in and stop it from darting all over the trail. The track has 96 studs. Any recommendations on what to do.
 

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check the RTS spring setting and clicker setting as well. make sure that these are set at factory starting pint for your weight and then go from there...
 
Noquater69 said:
Is there a chart for wt. setting.?
Click to expand...

No, unfortunately it's for "spring" rate not weight of the rider. But, notice in the manual that polaris stock spring is rated for "up to 280 lb. rider" I think many will argue that if your over 230 lbs, you'll want the heavier spring.
Also, it's been claimed that the low end of the spring rate begins at 150 lbs, so notice that there's limited spring rate change or thread for spring rate for 130 lbs of weight change
 
Last edited:
Shim the ski's. Old Bergstrom Skeg trick that works.
 
I just recently purchased a brand new 2019 650 Pro for my wife. She complained of the same thing. I thought no way, dramatics. So I drove it. It was ABSOLUTELY TERRIBLE!! I took two turns out of the rear spring, softened the shock, put one turn in each of the front springs, and hardened the shocks. I made it better but its still is a hand full to drive even for me. She wouldn't drive it at all. Is there something else i can do? This was its first trip this week-end, only 220 miles. and i'm wondering if i made the right choice of sleds. I have always owned Yamaha's.
 
Dean said:
I just recently purchased a brand new 2019 650 Pro for my wife. She complained of the same thing. I thought no way, dramatics. So I drove it. It was ABSOLUTELY TERRIBLE!! I took two turns out of the rear spring, softened the shock, put one turn in each of the front springs, and hardened the shocks. I made it better but its still is a hand full to drive even for me. She wouldn't drive it at all. Is there something else i can do? This was its first trip this week-end, only 220 miles. and i'm wondering if i made the right choice of sleds. I have always owned Yamaha's.
Click to expand...


Terrible how? Too much ski pressure? Or not enough? Most times making sure the center shock is set correctly is the first place to start. Ski shocks at the factory setting. Then use the rear spring pressure to dial in according to the driver... increase RTS to give more ski pressure, or less to reduce. Think of the center as a fulcrum...and balance it out.

If it is darting... it could be too much pressure. Shim the skis which helps, or as several posts have suggested go to a dualie setup. I have friends that run one dual carbide on the right and a shaper or stock carbide on the left to eliminate darting.
 
So terrible that it would almost get into a speed wobble above 25 mph. I think from what i was reading in the manual that it was too much ski pressure, I did find it awfull hard to steer especially on twisty trails. It made sense to move the weight to the rear, and it did make it better, but its still not right. I did not adjust the center spring or shock as i was out on the trails, and well, it was full of snow and ice lol, and I'm getting old. I thought i would live through the week-end until i got it home and in my shop, and then reach out here. The sled has a total of 225 miles on it and that is from this week-end.
 
Dean said:
So terrible that it would almost get into a speed wobble above 25 mph. I think from what i was reading in the manual that it was too much ski pressure, I did find it awfull hard to steer especially on twisty trails. It made sense to move the weight to the rear, and it did make it better, but its still not right. I did not adjust the center spring or shock as i was out on the trails, and well, it was full of snow and ice lol, and I'm getting old. I thought i would live through the week-end until i got it home and in my shop, and then reach out here. The sled has a total of 225 miles on it and that is from this week-end.
Click to expand...
Refer to the manual and set up the springs as indicated there as a starting point. If the rider is geared up over 230 pounds, set the center shock spring towards the max setting. Front springs mid stock and dial in with the rear.
Also check the toe out on the ski's. Seen some get out the door way way off. Hope this helps.
 
Chiefcheese said:
Refer to the manual and set up the springs as indicated there as a starting point. If the rider is geared up over 230 pounds, set the center shock spring towards the max setting. Front springs mid stock and dial in with the rear.
Also check the toe out on the ski's. Seen some get out the door way way off. Hope this helps.
Click to expand...
Really appreciate the help, thank you for responding.
 
A friend of mine has the exact sled and complained about the exact thing until we studded the track and put on double down runners from snowstuds. Put on 150 miles yesterday and now he loves it.
 
Mine was that way also and the toe was 1" out of alignment so got that set to an 1/8 tow out in front and works great now even with 7.5 shaper bars
 
I've got Woody's Slim Jim Dual carbides on wife's 600 rush. No darting what so ever. If you don't want that then simple shimming of the skies should solve it too.
Bergstrom sells shims for like $15.
 
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