Post by
BRosa »
https://forums.nicoclub.com/brosa-u120815.html
Thu Mar 05, 2009 6:50 am
Preload simply put is loading the spring while the rest of the suspension is 'unloaded'. While there are a few different reasons for doing so, your understanding of it is correct.
The best way for me to put it; look at it like a coilover set up with a spring. Except you can change the spring rate on the fly (PSI inside the bag). The damper has rebound and compression adjustments just like the coilovers do so to answer your question....yes they do have a rebound adjustment.
When we did the R&D on this kit I installed them into our GS400. I was very curious to see how they would handle as I've ridden in a bagged car many times before and it was very stiff and unresponsive. We had our coilovers on it before the bags and honestly, the air bags at full PSI (about 165psi) were quite a bit stiffer than the coilovers (with a 13K 8K spring rate). The shocks felt under damped and the car felt like it was on air (go figure). When the pressure dropped in the bags to down around 110 psi, the car felt and responded almost exactly like it did with the coilovers, with minimal body roll and a nice responsive feel. I was pleasantly surprised at how they felt and handled. When it was lower in pressure for freeway cruising (95psi) the car felt like a cadillac on stock suspension (relatively speaking), absorbed the road well and was actually comfortable. I hope this can give you a little insight as to how they ride.
Modified by BRosa at 9:45 AM 3/5/2009