Quantum Racing Suspension
T5-RS Example T4-LM Example T3-CR Example
QRS (Quantum Racing Suspension) is committed to the design, development & manufacture of the most advanced shock absorbers in the world. Using technology first developed for Formula 1, QRS offers shock absorbers for both cars and motorcycles. Successful performance has been proven time and again in series like BTCC and DTM. Every high performance QRS damper can be built to your specification or QRS can help you determine your requirements.
At QRS, quality and attention to detail are paramount. The fit and finish of Quantum shocks is equal to the very best racing shocks offered by others. They are fully re-tunable should one want to step up from comfort to touring, to sport, to super sport or even to full racing. One can really appreciate Quantum when one realizes the broad range products offered for simple to very sophisticated vehicles. These are ideal for what are often called Road and Track, Time Attack, Solo and Autocross applications.
QRS Dampers utilize the monotube design principal for best heat dissipation. Design goals include minimizing friction, hysterisis and gas pressure for best damper response. In adjustable shocks, the shaft internal adjuster is most effective with short and higher frequency displacements by varying the bypass of oil around the main piston valving. In double adjustable shocks, the adjuster inside the reservoir is most effective for long travel and lower frequency displacements by varying the bypass of oil around the base valve shim stack. The balance between main piston valving and base valve can be tuned to hasten the reaction time of the shock thus improving grip.
The QRS T5-RS damper is a simple, high performance shock absorber that can
be internally configured for the car and tuned
externally with a single shaft adjuster. This shaft adjuster effects
both low speed compression and rebound. The concept of this design
is that the shaft and functional components are located on the
centerline thus the response of this damper is extremely good for higher frequency
and short travel situations. The T5-RS also features a second shim
stack positioned in the main cylinder which
is used to produce a portion of the compression damping force allowing
the use of lower gas pressures. (3 to 8bar=45 to 120psi).
This second shim stack, depending on the how much target damping force is
required, can be set to optimize the response time of the damper and
allow for extremely low pressures without risk of cavitation.
The
QRS T4-LM is a single adjustable shock based on the T5-RS and fitted
with an external reservoir. The T4-LM also utilizes a second shim
stack for improved tuning.
The
QRS T3-CR double adjustable shock with external reservoir is our most versatile damper. It has a good
performance in both short travel/high frequency and long travel/low
frequency situations. The low speed CD/RD adjuster and high speed
CD adjuster offer independent control for each situation. The remote
reservoir tank contains the high speed
compression piston and adjuster. The high speed CD adjustment results
from displacement of oil caused by
Damper shaft ingress. Thus the high speed CD adjuster has a greater
effect at large shaft displacements due to the increase in the flow of
oil but has an smaller effect at the smaller shaft displacements
due to the reduced oil flow.