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VPP suspension designs balance different forces to eliminate unwanted compression without limiting bump absorption. The downward force on your pedals pushes most full suspension bikes down, resulting in unwanted suspension compression. VPP bikes use a patented link configuration and axle path to apply some of the pulling force from the chain to counteract that motion caused by pedaling. Because the forces are balanced, VPP bikes remain able to absorb bumps when pedaling, unlike other designs that effectively lock out the rear suspension by applying too much chain pulling force. What you end up with is plush travel with no pedal-induced compression or lockout and no need for manual lockouts or other compromises.
VPP's balance of counteracting pedaling and bump forces is optimized at the recommended “sag” point. Sag is the amount the suspension compresses when the rider is in a neutral position. For example, when sitting on the bike at rest or riding on smooth terrain. This point is about 1/4 to 1/3 of the way into the suspension travel.
VPP bikes are designed to be ridden with sufficient sag to provide truly active suspension, meaning the suspension compresses (positive travel) and extends (negative travel) with rises and dips in the trail. A VPP owner rides in a suspended “pocket” with ample positive and negative travel available to maintain traction and momentum in all trail conditions, even while pedaling.
Shock rate plays a huge part in any suspension frame design. Shock rate refers to how much the shock compresses for a given amount of rear wheel travel. A "falling rate" design is harder to compress at the beginning of the travel than at the end of the travel. A "rising rate" design is the opposite, easier to compress at the beginning than at the end. By experimenting with hundreds of different pivot placements and linkage designs, our engineers tune the shock rates on VPP bikes to both rise and fall at different points throughout the suspension travel, tailoring the attitude of the bike for different conditions and uses and maximizing the benefits of the VPP linkage and axle path. It takes a long time but it shows in the performance of each bike.
A great suspension design by itself is not enough to make a great bike. To realize the potential of VPP technology, every frame is carefully engineered without compromise in materials or construction methods. We start with custom tubesets made from the strongest and lightest aluminum alloys available. Then we use a variety of advanced design and construction techniques, including custom part design, strategic gusseting, modified weld bead profile and shot-peening. Prototypes undergo rigorous laboratory and real-world testing. Each frame is analyzed for high-stress areas when pushed to the limit. Geometry is tested, tweaked, and tested again. Every part of every frame receives an obsessive amount of attention to minimize weight, maximize strength, durability, and serviceability. We've designed custom double-row angular-contact full-complement bearings that are lighter and stronger than anything else out there. The shocks that come on our frames are valved specifically for each model to make the ride quality that much better. We don't spend our time writing frivolous patents or coming up with silly acronyms for the innovations we employ. We'd rather go for a ride, wouldn't you?
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