Tuning Fox Float Evols and Zero Pro's on Pro with 3" track

[snowhunter87]

Hey fellas, I have a 14 pro that I bought for this season, sled has 405 miles on it, came with fox float evols, the dual chamber ones on front. I am putting my 3" camo X3 track, avid 7t drivers, and a set of float evol and zero pro rear track shocks on it. I had questions about tuning the shocks. Anyone running these shocks on their pro?

I don't really do any trail riding, all boondocking, jumps, drift banging, cornice drops, hillclimbing. Mostly steep and deep in the trees, back and forth through the mountains, in and out of the gullies and saddles. Basically riding the Gallatin range, cooke city, and island park.

I would love some tips on setting up my shocks. I understand to set the evol and then the main chambers in that order, what you guys running for air pressure? I'm a 225 lb. dude in street cloths.
Do I need to get the two different pumps from fox, 150 and 300 psi?

 

[Keith517]

Below is a pic of what I am running this year. I weigh 160 lbs with gear on so my settings would be light for you but it will give you a base line. These are on my pro 155. I use the fox pump with two pressure gauges on it (one on each side)

Front
Main: 55 psi
Evol: 125 psi
High speed compression: 24 clicks
Low speed compression: 13 clicks
Rebound: 12 clicks

Front Track Shock: 50 psi

Rear Track Shock
Main: 125 psi
Evol: 165 psi
High speed compression: 18 clicks
Low speed compression: 12 clicks
Rebound: 12 clicks

These are my base numbers for this year and will change as I get more testing and tuning in on them. I have ridden once so far this year and they seem to be a good starting point.

I have also had them all valved by Tom's Snowmobile for my weight and riding style which may change things a little. I would think a good starting point for you may be about 10 psi higher in each chamber than what I have other than the front main chamber (Tom's put in a stiffer negative spring in the front which allows me to run a little higher pressure without increasing ride height). I would stick with 55 psi in the main to start with. On the clickers I like to start in the middle and work from there other than on the high speed compression which I start lower and work up if bottoming becomes a problem.

Fox recommends in their manual the following air pressures for mountain riding:

Front Main: 35-65
Front Evol: 120-150

Rear main: 135
Rear evol: 175

(on the rear this is the setting recommendation for the Burand shocks)

Hope that helps give you a baseline. The main thing is to go out and try them, experiment with different settings and see what feels good to you. Like you said always fill the evol chamber first and make sure the weight is off the shocks when checking pressures.

 

[snowhunter87]

thanks

Thanks for the help. I figure it's gonna take a few miles to get it dialed in to what feels good, just don't wanna trash the shocks getting rolling. A good rule of thumb for these shocks is to rebuild them once a season at least right? Both front set and rear are used so I should probably have them rebuilt to make sure that they are primo for the snow. See you at Carrot basin this year bud! I'll hit you up if I have any more questions but I will probably start out with what you said and set them just a tad stiffer to accommodate for my girth!!

 

[Keith517]

Thanks for the help. I figure it's gonna take a few miles to get it dialed in to what feels good, just don't wanna trash the shocks getting rolling. A good rule of thumb for these shocks is to rebuild them once a season at least right? Both front set and rear are used so I should probably have them rebuilt to make sure that they are primo for the snow. See you at Carrot basin this year bud! I'll hit you up if I have any more questions but I will probably start out with what you said and set them just a tad stiffer to accommodate for my girth!!

It is a good idea to have them serviced every year. I have been using Tom at Tom's Snowmobile if you are looking for someone to do the rebuild. You may have me confused with someone else, I have no idea where Carrot Basin is. Good like, I am sure you will enjoy the shocks!