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twin-link

beni-system

* also call VPP (virtual pivot point), DW-Link, Maestro etc...

The BENI-SYSTEM,

 

Our progressive type system was thought to have a high reactivity on small impacts and comfort on larger.

 

In addition to our very short chainstay, we feel like we have a lot more travel than in real life.

LEVERAGE RATIO

CHOUMAC ''LUNE_LevRatio - rogner.jpg

SAG

WHEEL TRAVEL (MM)

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The robust design and low bottom bracket provide a solid and excellent lateral stiffness   stability.

The triangle created (thanks to the tube parallel to the shock absorber: red on the photo), dissociates the energy of the BENI-S system from the front triangle. The front triangle, therefore, won't flex as the frame absorbs impact, giving a feeling of solidity and confidence harder sections.

The controlled anti-squat has several purposes:

At SAG level it allows to have effective pedal strokes while climbing.

Halfway through the travel, it give a good recovery without the suspension crushing unnecessarily.

Then in the last portion of the travel, the anti-squat gradually reduced to free the suspension for a big impact.

ANTI-SQUAT

CHOUMAC ''LUNE_Anti-squat - rogner.jpg

SAG

WHEEL TRAVEL (MM)

ANTI-RISE

CHOUMAC ''LUNE_Anti-rise -rogner.jpg

SAG

WHEEL TRAVEL (MM)

While braking, the anti-rise level tends to keep the geometry in its current position no matter the situation, so you don't feel thrown or crushed in the suspension.

 

The bike remains firmly in contact with the ground retaining its flexibility and grip.  

The very low Kickback-pedal no longer really evolves beyond 50% of travel, which has the effect of freeing completely suspension beyond this point. Very efficient.

PEDAL KICK-BACK

CHOUMAC ''LUNE_Pedal-kickback - rogner.j

SAG

WHEEL TRAVEL (MM)

To conclude, CHOUMAC bikes are planned and designed for aggressive use and to withstand time while retaining their physical properties . The designs of our systems and geometry will give you a feeling of comfort and immediate control.