Dual rate coil rates

[woodysfj40]

I've got F-O-A shocks on my RZR, and have been running single rate coils. Fronts are 250#, rears are 275#. One issue I have is rear kickback on washboards, and I believe switching to dual rates will cure that issue.

The FOA calculator gave me some ridiculous numbers, so I tried the SwayAWay calculator and it provides me with a 350# lower and 250# upper...which seems like a fairly decent ballpark.

Anyone else have dual rate setups they can share for rate comparison?

 

[Big Guy]

I run a 450# on the bottom and a 350# on the top but my rzr weighs in at about 1650 pounds. I was fighting a bucking problem for awhile and was chasing it with shock valving. Now that I have the correct spring I have been able to back out some of the shock valving. There are a lot of variables that come into play when you start stacking coils. Be sure that your bottom coil is alittle longer then your top you want to mak sure you dont get coil bind and blow the your perches out the bottom of your shock. I have made that mistake before If you have too much preload and your stepup stops are to low then you will get coil bind. How long are your shocks??? Are they a 2.5" shock I was looking into FOAs a few years ago but they didnt mnake a 2" shock.

 

[AZCourt]

Remember, rebound is simply controlling the spring and varies with spring rate. Springs are selected to hold the vehicle up, not control the rebound. Select your springs for other reasons than rebound issues.

 

[woodysfj40]

These are 2" body FOA's, 6" stroke rear and 5" stroke front...first time (I believe) that FOA has done a 5". Travel is maxed with the +3 RacerTech arms...if I pull a shock, it droops less than additional 1" before the CV's bind up.

Good point on valving, I may need to get a few sets of shim stacks and learn to redo these myself...oh goody...