By using links and pivot points it’s possible to control how the lever exerts force on the shock and compresses it. Your rear suspension is essentially a big lever that is used to compress the shock. These are general statements and modern high-volume air shocks aren’t a world apart from coil while offering many of the benefits of their benefits in a lighter, easier to adjust package. An air shock is better at resisting bottom out but loses a bit of the initial sensitivity of a coil shock. This makes it great for initial sensitivity and lots of fine-detail grip but means it can bottom out easier than an air shock.Īn air shock compresses in a progressive manner - as it goes through its travel it requires more force to compress it further. To get more complex we need to get back to basics.Ī coil shock compresses in a linear manner - that’s to say it compresses at a constant rate throughout its travel. Simply put, we tuned the leverage curve of the suspension to work with both air and coil shocks. When you're breaking you naturally put pressure through your rear wheel, so we believe having an active suspension that stays high in the travel is the way to go. However, our philosophy is that anti-rise should be low to let the suspension stay active under braking. Some believe that a high level of anti-rise is a good thing as the rear wheel is pushed against the ground when braking. Anti-rise counteracts the forward load transfer of bike and rider when braking and prevents this extension.Ī high level of anti-rise means that braking will compress the suspension to counteract the load transfer and at the same time stiffen up the suspension, making it less active.Ī low level of anti-rise means that braking has little impact on suspension, keeping it active, but can lead to geometry changes due to the load transfer.Īs with anti-squat, all mountain bike suspension designs have anti-rise, but there’s some disagreement over whether a high or low level of anti-rise is preferable.
When you apply the back brake to scrub speed out on the trail, the force created by your decelerating mass causes the rear of the bike to rise and the rear suspension to extend. Just as anti-squat can be configured to control how the suspension reacts under acceleration something called anti-rise can also be configured to control how the bike reacts under deceleration. As you go deeper into the travel the level of anti-squat reduces for minimal chain effects on impacts while at the same time keeping the suspension active. Our bikes are designed to offer good support and pedalling efficiency around the sag point. A low level of anti-squat means the rear suspension will feel very active but can lead to ‘bobbing’, where inputs from the drivetrain (aka pedalling) create unwanted cycling of the rear suspension.Īnti-squat isn’t a fixed figure though, it changes as the bike goes through its suspension travel. All bikes have some level of anti-squat, but how it is tuned plays a huge part in how the bike feels.Ī high-level of anti-squat helps a bike to pedal efficiently by resisting compression but it also leads to pedal kickback (where forces are fed back to the rider as a jolt through the pedals) and a harsh feel when you're deep in the travel. Anti-squat describes how the rear suspension compresses under acceleration, typically pedalling.
Let’s get technical and talk about anti-squat.
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