Has anybody found an inexpensive source for helper springs and couplers for a Ground Control system?

Both Eibach and Hypercoil helper springs sell for around $50 dollars each. The spring couplers also seem to be about $40-$50 each.

After much searching I was able to find Eibach helpers for $40 each and Eibach couplers for $30 each. That is still $70 per corner, and $280 for the whole car. Has anybody found a less expensive source?

Has anybody had the springs pop out on the front shocks? I was thinking I probably only need them on the rear. So that is only $140 dollars.

 

I may be missing the point entirely here, but why not just get some longer springs?

 

I'm a Hyperco distributor, the Helper springs should only retail for 34.95, and the dividers are about 18.00 in Nylon, and 28.00 in aluminum.

If you need any of those parts, let me know what ID you need. We can get you all squared away.

With the Koni setup the springs are free when the dampers are at full extension. Helper springs help them stay in place adding preload to them.

 

A longer spring will contribute to load capacity. Maintaining the spring rate you want will net you a higher load capacity with a longer spring. Thus the ride will be bouncy. Also the added length will reduce the amount of bump travel available. Simply using the flat coiled helper springs allows use of the preferred spring rate/load capacity/install height without losing bump travel.

 

If you threw in a 1" longer spring of the same rate, you would have to lower the ride height collar by 1" to maintain your ride height. This leaves you were you started with the same amount of spring droop (though your wallet would be lighter). The only spring option that would fix the problem would be to run a longer & softer spring, but then your just back to OEM and nobody want's that.

To address the original question, it's best just to skip the helpers. Since they essentially do nothing, it's kinda a waste of money. You will notice zero performance difference. The only change you will see is when the car has all wheels off the ground. And as long as you have sway-bars, the helpers will never see action even when three-wheeling around a turn. So to answer your question, no spring droop is not a problem.

BTW: You might do better to build yourself an adjustable droop-limiting system instead. Droop tuning is a considerably powerful fine-tuning device on the track (at least for RC racing). Something like this can be used to alter entry & exit steering without having adverse effects anywhere else in the turn.