As illustrated in the adjacent Figure, the VAST suspension system provides:
VAST is not about completely re-defining what a suspension system should do. Other systems provide excellent anti squat for most of the system's travel. As you can see, the outcome for the systems travel after the sag point is very similar. VAST provides an improvement on the anti squat performance up to the sag point.
The reduction in anti-squat before the sag point provides a number of key advantages:
Go here for move explanation of these benefits.
The VAST system can be tuned, and can be configured to provide different performance outcomes as may be desired by the designer.
The VAST system provides all options for shock leverage ratio. These include rising, constant and falling rate options.
Contact Bhaack for more information about other leverage ratios.
As shown, the VAST system provides good anti-rise performance where it is needed.