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Does the GEOMOD work on 2010 m8?

I don't get it. I have an 09 and a 10 M8 and if it is anything they do well, its getting up on the snow and not trenching. I have not changed a thing on these sleds for suspension settings. They are both how they came from factory. Are the people complaining just dropping the hammer from a dead stop in bottomless powder, or standing way on the back of the running boards. I just think these sleds work so good that I don't know how anyone can be dissatisfied.
 
The "08 mod will work on the '10. That's what i have done to mine, but the later rails need a different stop location ( abit down and forward not up and forward).
I haven't the time to answer the e-mails any more. Sorry, just too much work (friggin El Nino keeping the ground thawed) and the free time is for sledding.

I'll give a small blurb here now though, cause I'm here.

Nothing beats a revalve for ride. The Burant kit really works in stock positions (better than anything I've tried yet anyway) and a good deal.
To do the mod you WILL need a softer middle spring set-up (look up dual spring set-up from Holz, the best all round for powder or trail, or find a M-7 spring for powder only). On the Holz spring set you need to have a .9 inch cross over point or it will still act too stiff in powder, he sends it at .65".


The mod stands the shock up straighter and couples longer, allowing you to run less air pressure initially and not bottom. Better ride and more transfer (because of the lower start pressure). For less transfer (like you may need on a hill in certian snow) just bump up the pressure abit closer to stock and the longer coupling period keeps the skid flater. Way better than stock. Or, install a adjustable air canister (I use a Nextech) and decrease the volume a few turns and the spring rate stiffens quicker for the same effect.

It's a simple mod and if you understand what it does, it works. IMHO the stock air skid as delivered is a trencher and a bucking trail bronco, unless you find just the right air pressure for that spot on the mountian. Then it works just fine. It all depends on that small range of air pressure and where you put your feet.

Hope it helps. That's all the time I got today, time off and going sledding.

Geo

thank you so much for your time explaining this. everyone has helped me on this thread and i am going to do it tonight. i'll be in touch, but i really want the burandt upgrade, just dont want to be without my sled too long.
thanks
 
Can someone explain what Geo means by the .9 vs. .65 crossover point and how this is measured? Thanks.
 
From everything I've ever experienced the best way to not trench is bring the front of the skid up and the rear down. Mtclimber have you messed with your suspension, the easiest setup that works for everyone I've seen so far from 155-210lbs is, Pick the back of the sled up off the ground, then loosen the front skid shock until the spring is loose and you can jiggle it around, then just snug it up and get a measurement on how many threads are left showing, then add 3/8" pre load, then with it still off the ground run (for you weight) 140 ish psi in rear shock. This should get you close for the least amount of trenching but you may find less or more works two. one thing I do is after riding it a little while and snow is stuck to everything weighing it down I will go pick up on the back of the sled and if it goes up more than about 2 inches before the shock maxes out I add more air. The other day I set it at 150psi and then on the hill it was sagging, up high in the cold it turned into 140psi I raised it to 155-160psi to get it where I wanted and it made a big difference. Here is the down fall though adding more in the rear and less in the front makes it want to wash out when side hilling.

So what this does is lets the front of your track come in contact with the snow and still leaves snow for the rear to get traction on. when its stiff up front it just digs down and doesn't leave any for the rear of the track giving you the effect of a short track sled. Try this, put a 8 inch block of wood under the back of your skid and look at how much track is touching the ground, also push the suspension up and down and you will see how soft it is in the rear, then take the block out and push down and you wont be able make it go down near as far. the two shocks work together and the rear needs pressure to make the track work, If that doesn't get the job done then tighten your limiter straps just to see what happens.
 
so for the 09-10 (swiss cheese rails) the rear upper holes in the drop bracket are the same as the 08 geo mod? and you just move the lower scissor stop forward and down rather than forward and up?

anyone have accurate measurements for both and pics with the 09-10 rails? would like to try this. ski
 
so for the 09-10 (swiss cheese rails) the rear upper holes in the drop bracket are the same as the 08 geo mod? and you just move the lower scissor stop forward and down rather than forward and up?

anyone have accurate measurements for both and pics with the 09-10 rails? would like to try this. ski

yes that is correct, and i would love some pics also
 
wait, i am lost again. so for the geomod on my 10', he said i need the new spring or m7 spring? or is that w/ the burandt?
 
We had always thought that, but when you drop the front skid mount you'd be surprised how well it works.

unless it is complete fluff my skis are a good 1-2ft of the snow and have had it come over on me, in the fluff they are still of the snow but not far. Do you think it would help??? I am 6'6" and 205lbs and can get my weight where I want, but what I stated seems to work well for all but I have not tried dropping either,
 
unless it is complete fluff my skis are a good 1-2ft of the snow and have had it come over on me, in the fluff they are still of the snow but not far. Do you think it would help??? I am 6'6" and 205lbs and can get my weight where I want, but what I stated seems to work well for all but I have not tried dropping either,

We did it on my wife's turbo (high HP, but light rider) it allowed us to get some transfer but run slightly higher psi in the rear so we could keep it from coming over as much & keep from bottoming on big hits. In the lower position it would stay down, or it would come up a bit too far when we dropped the psi. My few buddies with 153's seem to be happy with that change & have seen similar results.

Keep in mind, you can always just go back.

I have not tried it on my 1000, with the 141, it transfers plenty as it is!
 
I had my shocks revalved for ride control no need to play with the air adjustment for better suspension. you can feel the suspension working when sidehilling now. I may try it if I get beat and after coming over a few times I don't think I need more transfer.
 
It's hard to explain, but it's wasn't more transfer, it's better transfer. It allowed us to keep the skis at about 10-20" off without it coming TOO high as often if that makes sense?
 
well..I think I'm going to move the front skid hole downthis week....but my question is is that when I do this are the skis going to want to stay down more yet? Which hole do you recommend to run in the back?
 
on my sled 09 m8 sp w/ the holz re valve and fett cans, the transfer is great, the sled carries the skis up 3+" on a climb, just where i like it. like stated earlier
you can really feel it working if you walk the boards on a side hill.

the only problem i am having is when my track speed starts to drop at the top of a climb, the pc track bites so hard the sled blows over backwards rather than trench.not that i want it to trench but i have never had a nearly stock sled blow over like this.its real close for my ridding style, just not 100%.

btw, the skid is in the stock location.
 
oops, i just realized the tread was about the geo mod:eek:
i dont think i mentioned geo once in my post so..................
i am guessing my post will soon be deleted because i am not talking
about the exact same thing the thread was started on.
you think i should know better by now.....sorry for the rant:beer;
 
I added this thread to the "Helpful Links" section of this board. Really good info here on setting up the rear skid for those wondering on the 09-10 M's
 
For moving the front mount, I leave the rear in the same hole (upper). With same psi in rear you'll have a little more ski lift, which will help transfer.
 
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