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Dropping rear skid on RMK

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  #1  
Old 12-27-2008
modsled
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Default Dropping rear skid on RMK

Looking for some advice and opinions from all u sledheads. Im looking to drop the skid on my sled as I was hoping to gain some snow clearance. Its a 1997 rmk 700 chassis with an punched '03 800, has a holtz 151 rear. I can weld or fab any new brackets if needed. Any ideas or opinions would be greatly app. Benefits or hindrances?
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Last edited by modsled : 12-27-2008 at 12:51 PM.
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  #2  
Old 12-27-2008
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Are you trenching that bad? With a 151 track? What are you riding in, powdered sugar?
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  #3  
Old 12-27-2008
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yeah, it has done some trenchin.... A smarter-than-me friend told me I needed to rework it. He esp. questioned the attack angle of the track? It transfers pretty well and hooks up on a hole shot. It squats to much when Im on it, thus leading to less clearance.IMO. I figured if i dropped the skid, and stiffened up the suspension a touch, it would fix it. But the most I know about a rear skid is you can change the whole attitude by changing one little thing. I was wondering ur guys opinions, I didnt want to jump into this w/o some knowledge.
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  #4  
Old 12-27-2008
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It looks like there is almost no pressure on the front of the skid. Have you tried tightening that front shock spring up?
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  #5  
Old 12-27-2008
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if you drop the rear any more it will trench worse, it will add wieght to the rear axle and skis, the attack angle is a little on the steep side, but for trenching the type of track will make more of a difference than any little suspension changes.
that skid has plenty of clearance under the floor boards.
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  #6  
Old 12-27-2008
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That sled is jacked way up in the air already. How could you want more? I don't think that your skid being too high in the tunnel is your problem.
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  #7  
Old 12-27-2008
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Yeah, its jacked up in the pics, im telling ya when i get on it, its squatting, and im not a "huge" guy. Im clueless, so Im askin if i should drop or raise the front or rear of the skid, or change the susp. Should I post some different pics to give a better view?
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Last edited by modsled : 12-27-2008 at 03:54 PM.
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  #8  
Old 12-27-2008
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I'd probably contact the manufacturer of the skid and get help from them. It sounds like you have too much sag. A stock Polaris skid shouldn't have more than 4", so if you've got more than that, I'd see what Holz says about remedying the problem.
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  #9  
Old 12-27-2008
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when's the last time the shocks were serviced?
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  #10  
Old 12-27-2008
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I had GP Racing suspension gp thru them just over a year ago.
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  #11  
Old 12-27-2008
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may want to re-charge them. just remember the only thing holding that nitrogen in a 1 Teflon ring and a rubber seal....

i hit a jump to hard today and blew all the nitrogen out of my Fox shock and the thing just sags when i sit on it now. So tomorrow morning i will be rebuilding it and re-charging it before the ride.
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  #12  
Old 12-27-2008
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I will pull them off and have a look at them tomorrow. It wouldnt surprise me if they were blown, she had alot of air under her last year.
What are your guys thoughts on the suspension after seeing the pics? The attack angle of the track close?
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  #13  
Old 12-27-2008
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On that rear arm, where the short section is bolted to the rails, move that to the rear hole and it will stop transferring so much weight to the rear of the track when you accelerate.
Add about a turn and a half to the front spring adjuster too as this will help keep the rails level when accelerating in all conditions and will also improve the ride on harder surfaces such as hardpack or ice.
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  #14  
Old 12-27-2008
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On the Edge RMK chassis I know there are aftermarket brackets that improve attack angle. These Polaris set-ups will dig a trench to China. Leveling it out helps a lot.
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  #15  
Old 12-28-2008
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he's running a wedge chassis tho... lol
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  #16  
Old 12-28-2008
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Ya, but the front of that track looks awfully high. What track pitch are you running and what size drivers?
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  #17  
Old 12-28-2008
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the skid is an uncoupled rear skid, it might be the nature of the skid to drop 2-3 inches when you sit on it?
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nothing goes like 3 holes.

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  #18  
Old 12-28-2008
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i think 3" is a little much.
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  #19  
Old 12-28-2008
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the old xtra 12's recomended atleast 3" of sag. the more sag you have with good travel after it the smoother the sled will ride. that way when you go over a hole the skid can drop into it before the seat has to fall.
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in a time of deciet telling the truth is a revolutionary act. george orwell.

aint no body ripin like me. M to the a-d-c-o-w. rock it hard for my fly ladies. I rock it yes in deed. homies still roll with me. money dont change me


nothing goes like 3 holes.

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  #20  
Old 01-04-2009
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So, that old testament, if it aint broke, dont fix it. That fit in here. I did what OCR suggested moved the rear short swingarm to the back hole on the rails, gave a turn on the front spring and took it out for a ride. Broke the coil spring collar off of the rear shock shaft and bent the shaft..... WTF
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  #21  
Old 01-04-2009
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you know which brand of shock it is? and shock shaft length?
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  #22  
Old 01-31-2009
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Quote:
Originally Posted by Polaris_800rmk View Post
On the Edge RMK chassis I know there are aftermarket brackets that improve attack angle. These Polaris set-ups will dig a trench to China. Leveling it out helps a lot.
Tighten up your front limiter strap and that trenching effect get's much better
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  #23  
Old 01-31-2009
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Quote:
Originally Posted by Madcow View Post
the old xtra 12's recomended atleast 3" of sag. the more sag you have with good travel after it the smoother the sled will ride. that way when you go over a hole the skid can drop into it before the seat has to fall.
Exactly,
That's called negative travel.
We would dial in 1/3 to 1/2 travel as sag depending on the course when I was racing bikes.
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  #24  
Old 02-01-2009
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After looking at the pics again, I see that there are four holes on that under tunnel bracket.
Move the arm forward one hole and try it. I thing you have too steep of an angle on that rear arm. If you see improvement, try the next hole forward and so on.
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  #25  
Old 02-01-2009
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heck, got nothing to loose at this point, all that can happen is a shock gets broke!!
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If the boner police are here I need a lawyer.

in a time of deciet telling the truth is a revolutionary act. george orwell.

aint no body ripin like me. M to the a-d-c-o-w. rock it hard for my fly ladies. I rock it yes in deed. homies still roll with me. money dont change me


nothing goes like 3 holes.

BRTECH HOODS
high performance engineering
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