Ibis Mojo HD - suspension kinematics

Carbon fiber Mojo HD is built around the DW-Link platform - two short semi-rotating links designed and patented by Dawe Weagle (US).
Positioning of each pivot creates so called "virtual pivot" while the VP position is one of the most important factors how the linkage and the whole bike really works.

Lets break the solutions down in following categories :

1. Virtual Pivot - DW-Link specification

The actual positioning of the VP as designed by Ibis in the middle of the big and middle chain ring shifts the bike on pedal friendly side of the spectrum. Anti-squat values range from almost 120% to 70% in the first 3rd of the rear wheel travel while the pedal-kick back value (set up: chain ring 40teeth - cog 15teeth) sits around 9°.  

Result: Simply said - both values are balanced for the optimal performance - not XC racer and also not DH rocket - but over all great enduro all-rounder.
Similar system users: Turner bikes and Pivot (both US)

DW-Link - variation of Virtual Pivot Linkage
the Shock is attached on the swing arm

2. Leverage ratio - shock tuning

The leverage ratio of the Mojo HD ranges from 3.05 to 2.42 at 100mm of the rear wheel travel to 2.75 at the end of the stroke. It means that the forces on the rear wheel differ from linear to progressive little bit. This protects the shock from bottoming out while the whole combo - swing arm - linkages - rear shock - create little bit less sensitive  system than e.g. FSR (Specialized) can offer.

The factory setup of the shock is FOX RP23 Boost Valve. 

Result: The drawback of really little bit less sensitivity is highly paid by the pedaling performance off.

3. Rear Shock pivots

The really great idea of all FS Mojos is that the forces pushing the rear shock come directly from the swing arm, not from the top link and its bearing. This keeps the top-link bearing last longer, especially if you realize, that the bearing's rotation is only few degrees (less than 1/4 of the whole rotation).

On the second side is the shock attached to the main frame via two metal plates (Ibis call that limbo-chips). You can purchase two options: one for 160mm rear wheel travel (shock 215/63) or 140mm (shock 200/57) so that with only little money you can switch your bike from pure enduro into all-mountain category.

Result: Two great solution in one simple package, congrats Ibis!