Dual Rate Springs

[TLCT1]

Has anyone tried the Hypercoil Dual Rate UHT springs, any feedback?

[MasterSbilt_Racer]

Has anyone tried the Hypercoil Dual Rate UHT springs, any feedback?

I have not. Just realize that you have no control over the load at which the rate changes. It may be perfect for your setup, it may not be. If your spring load is 500# and mine is 600#, our rates will change at different amounts of suspension travel.

[Jim11h]

Explain please, ya lost me

[MasterSbilt_Racer]

Those springs are designed to switch rate at a certain load from free height. After you scale a Rocket that spring may have 500# on it. On a Longhorn, it may be 600#. The load where the rate switches is fixed. Let's assume it is 800# and the initial rate is 200#.

The spring on the Rocket will switch rates after 1.5" of travel. The spring on the Longhorn will switch after 1".

[Jim11h]

First heard of em. Appreciate info, I'll have to dig into little deeper and learn

[zeroracing]

I share the same concern as MasterSbilt_Racer. I did see an odd looking spring the other day on a car, anybody have a picture of one of these UHT springs?

[billetbirdcage]

I share the same concern as MasterSbilt_Racer. I did see an odd looking spring the other day on a car, anybody have a picture of one of these UHT springs?

more info here: http://www.4m.net/showthread.php?358200-springs

[jrkracing54]

I prefer the dual stage spring set-up where you can determine where the secondary spring rate comes in. John 1 *

[rakracing]

there a great option if ya cant run stacked, i'm back to running the stack setup mostly because of the adjustability, do have one for the rr just aint tried it yet.

[grt74]

afco has made one for years,5th coil is where they started to use them 1st

[billetbirdcage]

afco has made one for years,5th coil is where they started to use them 1st

Yes, but that is really just a progressive spring where this is a dual rate. Meaning it's fairly linear in 2 different rates over a distance with a set transition zone in between the 2 rates. The PR1, 2, 3 springs that afco made for the torque arms is/was basically a progressive spring and many have been made since and in several versions.

[lovinlatemodels]

Not knowing 100% on this with out a spring checker I would bet as the spring sits at ride height it is a soft compression for corner entry and as the bottom coils start touching the spring gets stiffer for corner exit and with today's shock package your able to get a better corner exit. basically the same as a 2 step set up on the right front that Carrera used back in the 90's and now with better knowledge of how it works they were able to put it to uses in a progressive rate spring on the right front. But I am pretty sure this is going to take some practice to find the right combination also there will probably will be other spring and set up change to make it work correctly. My fear would be it would not be very consistent when in a pack.

[CCHIEF]

I feel these will likely be a disposable/wear item, as the closer coils coil bind, the spring will likely bend. It may work well but will require monitoring to stay consistent over time. They may get better as they get older.... or worse. SOme one put one in and report back! If you run one on a Rocket, keep an eye on interference with upper a frame at max travel!

[RaceMentally]

We use these on LR...

[lindsey97]

http://www.rtach.com/pics/the_thing.jpg

Since the cat is out of the bag, maybe??? Anyone seen this pic before? And speaking with the engineers at Hyperco they are designed to live at coil bind indefinitely.