LR Stack Spring

[MasterSbilt_Racer]

^^has to be coil bound.

Now, that probably occurs at 2100-2200 # depending on his initial ride load and gap, so maybe it isn't too bad.

[TRocket8]

On the rocket set-up set up sheet, if you run a 200 with a 550 bump spring, it says you need an internal bump stop in the shock. I never ran that setup so I am not sure.

[fastford]

we figured out pretty quick that on a rough track , the bump spring or even the 2 stage set up was better and a smooth track the rubber stop was better , we never went that soft on the bump spring though , we also migrated to the long soft lfr spring over the stacked , we like the swift tornado spring the best...jmo...

[Jking24]

On the rocket set-up set up sheet, if you run a 200 with a 550 bump spring, it says you need an internal bump stop in the shock. I never ran that setup so I am not sure.

I believe they are referring to a.500" spacer inside the bump spring to keep it from coil binding

[latemodel99]

its on a XR 1. I have a 90/200. .

What brand/length of springs do you run? Been looking for about a 100lb short spring (6in) but not able find anything.

[MasterSbilt_Racer]

What brand/length of springs do you run? Been looking for about a 100lb short spring (6in) but not able find anything.

I think PAC made that spring, if you can find someone who bought up their inventory.

Swift makes it in the barrel type.

[7uptruckracer]

8” 100 12” 200 use the unloaded on the smasher to assemble it. 6” will coilbind

[MasterSbilt_Racer]

Even at 8", swift isn't supposed to be loaded to 600#. I assume the poster has something different than cookie-cutter in mind.

[7uptruckracer]

I think last one I did was 645 and it was a sheet of paper from starting to touch coils lol. But I never got the load down to raise deck more before the car got put away for covid

Even at 8", swift isn't supposed to be loaded to 600#. I assume the poster has something different than cookie-cutter in mind.

[Austin34471]

Easy equation for what spring is needed for your desired "extended load"

Spring rate = ((Ride height load) - (Desired extended load)) / (Extended center to center) - (Ride height Center to center)

Example: I want 100# of extended load, my ride height load is 600#. My Ride height center to center is 15", my extended center to center is 20"

(600# - 100#) / (20" - 15") = 100 lb/in spring

[Jking24]

Easy equation for what spring is needed for your desired "extended load"Spring rate = ((Ride height load) - (Desired extended load)) / (Extended center to center) - (Ride height Center to center)Example: I want 100# of extended load, my ride height load is 600#. My Ride height center to center is 15", my extended center to center is 20"(600# - 100#) / (20" - 15") = 100 lb/in spring

Good info but worth mentioning this only works for non lockout setups

[Austin34471]

Good info but worth mentioning this only works for non lockout setups

That equation gets a little tougher but is pretty easy to do on a spreadsheet. I raced for a long time with no spring smasher, just microsoft Excel on my phone.

[MasterSbilt_Racer]

That equation gets a little tougher but is pretty easy to do on a spreadsheet. I raced for a long time with no spring smasher, just microsoft Excel on my phone.

I only got a smasher to deal with bumpstops. I hear you.

[Modified18]

Is there a way to figure out using spring rubbers in Excel or is that something you absolutely need a spring smasher for?

[MasterSbilt_Racer]

Is there a way to figure out using spring rubbers in Excel or is that something you absolutely need a spring smasher for?

That's another one where you need to check it, to really know. Those were invented for a hail Mary adjustment, it's funny how they are considered std equipment now.