Dynamic Suspensions’ new DSSV damper can give
you a competitive advantage due to a new
damping technology that has previously only been
available through exclusive arrangements.
DSSV provides significant performance and
operational gains over conventional dampers and
eliminates the use of shims commonly used in
motorsports dampers. It is a pure 4-way damper featuring independent high and low speed valves
for control of both bump and rebound, and includes linear indexed adjusters,
matched from damper to damper to optimise the symmetry rating across
each axle.
The desired damping specification is selected using Dynamic Suspensions’
SpecFinderTM software. Fine-tuning is achieved through on-car adjustment of
both the linear indexed high and low speed adjusters (adjustment range of
0 – 11 on each adjuster).
The external, cartridge-based configuration of the valves means they can be
replaced on the damper quickly and without the need to fully disassemble,
re-build and bleed the damper.
The high speed valve adjusts, in even steps, the ‘blow-off’ point on the damper’s
force vs. velocity (F-V) curve.
The selection of available high speed valve assemblies provides a wide range
of F-V curve options – from digressive to linear to progressive.
DSSV is an aluminium-bodied coil-over damper covering a wide range of installed lengths and damper strokes.
Adjustment via the replacement of the high speed catridges can be made without having to fully strip, re-build and bleed the damper.
Exclusive contract, bespoke design DSSV damper
DSSV Damping Technology offers:
Analytically determinant. The DSSV damper is virtually a pure damper. Through the use of Spec Finder™, the damper will duplicate the behaviour of a theoretical damper model enabling consistent results with ADAMS or other vehicle dynamics simulation software. This feature is the subject of a patent application.
A wide range of damping curves. The nature of the DSSV valve provides the widest possible range of F-V curve options - from digressive to linear to progressive. Shim and poppet valve dampers are limited to combinations of v2/3 and v2 relationships. With DSSV, the shape of the curve is only limited by the laws of physics.
Independent control of high and low speed damping. The low speed damping adjustment is via a unique digital bleed valve. This feature is the subject of a patent application. The valve has predetermined discreet adjustment steps for consistent adjustment across the range, and between dampers. High speed damping control is through the DSSV valve which runs in parallel with its own adjuster mechanism.
Temperature stability. Oil flow within the DSSV damper is kept highly turbulent which contributes to a very low level of damping “fade” at high temperature. Typical force degradation from 30°C to 120°C is less than 4% over a typical range of velocities as compared to up to 16% for a shim damper, or up to 14% for a poppet valve system (particularly at lower velocities).
Frequency independent. The DSSV valving design's low inertia and stiction has produced a damper with consistent damping over the complete range of frequencies experienced by race car suspensions.
Cavitation-proof. While most dampers rely on a minimum reservoir charge pressure to prevent damper oil cavitation below a threshold velocity (or at least a balance between piston and CV valving), DSSV dampers are designed in such a way that cavitation is impossible regardless of velocity or valve specification. This feature is the subject of a patent application.
Minimal sensitivity to displacement. The very low gas charge values required in DSSV dampers means that ride height changes are minimised as a function of temperature variation.
Repeatability and consistencies. DSSV dampers are consistently repeatable to less than 2% or 15N damping force variation across the velocity range, and throughout the adjustment range. This consistency significantly reduces the amount of time spent working with dampers to get the correct spec and range of adjustment.
Minimal damping hysteresis. Much work has been done in the development of the DSSV product to minimise damper hysteresis, optimising the trade off between damper size and hysteresis level.
DSSV Success:
2004 Champ Car World Series champion, Sebastien Bourdais, Newman Haas Racing.
2002 Champ Car World Series champion, Cristiano da Matta, Newman Haas Racing.
2004 British Formula 3 champion, Nelson Piquet Jr. 2003 Rolex 24 at Daytona, Daytona Prototype class winner
2003 IRL IndyCar Series race winner, Alex Barron, Mo Nunn Racing
2002 ALMS, Panoz Motor Sport, winner, Grand Prix of Washington D.C.
