Comfort Gas Shock Absorbers.

Comfort Gas Series

The Unique Velocity Responsive Damping System

Pedders Comfort Gas Shock Absorbers with Velocity Responsive Damping (VRD).
The unique VRD system is ideal for people seeking higher levels of performance either to improve aspects of their older vehicles or match the race-bred technology of newer cars.

The secret to Pedders™ evolution VRD is a unique, micro orifice (very small passage) located in the shock absorber piston, through which oil flow is controlled.

The passage is extremely narrow and tooled in a special way so that oil flows freely at low shock speeds but is resisted at higher speeds when oil flow velocity increases (as encountered in rough driving conditions or through frequent changes of direction or acceleration).

The Benefits of VRD:

• VRD shocks achieve a progressive, responsive damping rate and offer a variety of benefits compared to conventional shocks:
• Unique nature of the oil flow - provides a progressive shock response rate throughout the full range of shock travel
• Unique micro orifice - removed the need for an extra valve or diaphragm. This means there are fewer moving parts, hence longer service life.
• VRD shock operates at all speeds - from very slow to very high

How the VRD System works

Under normal driving conditions, the flow of oil through the micro orifice is continuous. But when the speed of the shock increases, oil is forced through the passage at a faster rate, i.e. a greater volume per second. Under these conditions, the layer of oil closest to the orifice's surface is relatively "sticky" and moving slowly while the inner layers flow more quickly. This is due to the laminar, or layered nature of the oil flow.

Therefore, at low shock speeds, the layers flow in a normal manner. But as shock speed, and hence oil flow increases, so does the resistance to the flow, to a point where no matter how much more pressure is applied, flow is constant.