Dropping the front arm with the 36" front end

Ron Burgandy · Mar 17, 2016

I have a '14 pro 163" with burandt evol shocks all the way around, alt imp 36" arms. my concern is that when the sled is on flat ground, only the last 1/4 of the rear suspension touches the ground. the front of the track is off the ground a good inch or two and than tapers down until roughly the rear arm location. is this how the stock 163" is or does the 36" raise the front end causing the front of the rear suspension to lift as well? just curious if dropping the front arm to the assault location would help this or if this is a normal thing.

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FatDogX · Mar 17, 2016

I don't think you want to be placing the suspension mounting in Assault position. The rail profile of the RMK and the Assault are different. The Assault can be changed back and forth but from what I've seen, the RMK shouldn't be changed.

Ron Burgandy · Mar 17, 2016

FatDogX said:
I don't think you want to be placing the suspension mounting in Assault position. The rail profile of the RMK and the Assault are different. The Assault can be changed back and forth but from what I've seen, the RMK shouldn't be changed.

interesting, Whys that? I would think by them giving you the option of dropping it that it would ok to do. has anyone here actually stabbed a track by dropping the front arm?

I realize you lose some AOA by doing that, but being able to pop the front end up to get over creeks, downed trees etc etc is highly valuable the way I ride.

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The Bob · Mar 17, 2016

We talking RMK Assault or the SBA? Is their different FTA mounting positions on the Tunnel?

On my Pro I added a limiter strap and let them out a bit. Seemed to help a little bit from pushing, but didn't quite get me to where I would like with being able to lift the front a bit easier. I'm running Burandt Evol/r 3 setup on the rear and have RC2's at 17.2"s and Z-Broz 39" arms. Z-Broz recommends 17.125", so I am .075 from their recommendation but can't imagine that makes a huge difference. I noticed my rear skid wasn't sitting as flat as I would like when I finished this sled. Mine is a 155".

Ron Burgandy · Mar 17, 2016

the rmk assault. if you look at the pro tunnel it has a hole below the existing one that can be drilled out, which is the one the rmk assault uses because of the wider stance.

In short, im just curious if someone with a stock 163" front end and skid could tell me if the skid sits completely flat or if the front of the skid is raised like mine.

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The Bob · Mar 18, 2016

If I recall most I have seen don't sit completely flat on the ground just sitting, most I see are 155"s. So a 163" would probably make it more prevalent. Do you know the length of the front shocks? Not familiar with Alternate Impact and what length shocks they want for the 36"s.

I don't think they drop it down due to the width on the Assault, it would have more to do with the longer shocks on the front.

FatDogX · Mar 18, 2016

Click and read,

http://www.snowest.com/forum/showthread.php?t=366857&highlight=Assault+pro+rmk

Ron Burgandy · Mar 18, 2016

FatDogX said:
Click and read,

http://www.snowest.com/forum/showthread.php?t=366857&highlight=Assault+pro+rmk

thanks, good read. Im gonna drop it down and try it, still no evidence of anyone stabbing a track. With the 36" front end causing a little higher ride height, it appears that the bumper height is similar to an assault bumper height, which may allow me to drop the front arm without issue.

I may be back on here with a stabbed track saying dont do it haha. I want to upgrade to the 2.6 anyways so ill give it a shot.

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ullose272 · Mar 19, 2016

Its the front end with the floats. Had the same issue on my pro. I ended up running about 50 psi in the main chambers to get it to sag more. Then put extra in the evols til i got it how i wanted. With coilover you can just put less preload on it.

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FatDogX · Mar 19, 2016

Ron Burgandy said:
thanks, good read. Im gonna drop it down and try it, still no evidence of anyone stabbing a track. With the 36" front end causing a little higher ride height, it appears that the bumper height is similar to an assault bumper height, which may allow me to drop the front arm without issue.

I may be back on here with a stabbed track saying dont do it haha. I want to upgrade to the 2.6 anyways so ill give it a shot.

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Definitely report back with your findings.

The Bob · Mar 20, 2016

Do you have anti-stab's on?

Ron Burgandy · Mar 21, 2016

The Bob said:
Do you have anti-stab's on?

I do not. Currently investigating though after reading that prev linked thread. Might be a good insurance choice.

sledheadd · Mar 21, 2016

Here's how my 13 sits with Dan's 36" arms

mountaincat 800 · Mar 21, 2016

sledheadd said:
Here's how my 13 sits with Dan's 36" arms

How much stuff do you have sitting on top of that sled to get it to sit like that? Haha.

ak · Mar 21, 2016

sledheadd said:
Here's how my 13 sits with Dan's 36" arms

What's your front shock length and is the keel not as deep on the sly dog ski vs the gripper?

Ron Burgandy · Mar 22, 2016

that ski does look like it rides a little lower.

had a ski rubber issue as well. 200 miles on sled and both were shot.

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Steens86 · Mar 23, 2016

I second the whats your shock length? that could cause front to raise I tried fox shocks one time to try and realized they shipped wrong ones and it sat mostly on the rear of the track, mines a 155.

sledheadd · Mar 23, 2016

ak said:
What's your front shock length and is the keel not as deep on the sly dog ski vs the gripper?

Front shocks are stock length and I'm not to sure on the keel not being as deep.
I could measure the Sly dogs but I do not have a set of grippers around to measure.

Ron Burgandy · Apr 2, 2016

just some food for thought about track stabbing, alot of people with the 3" tracks are running 7t drivers which also increases attack angle and you don't hear many problems from them. I'm not sure how close that angle is between dropping the front arm or running 7t drivers but its just something that popped in my head.

MrIQR · Feb 1, 2017

did you ever try dropping it? Mine sits crazy high in front with the 36" kit and thinking dropping it will make the sled handle more how I like it to.

Dropping the front arm with the 36" front end

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