instant expert: ANTI-rise
What is it?
When you apply the brakes, your weight shifts forwards. This causes the fork to compress and the rear suspension to extend, or ‘rise’. Torque from the rear brake, generated by the calliper rotating relative to the rotor when the suspension compresses, counters this to some extent – a phenomenon known as ‘anti-rise’.
What affects it?
How much anti-rise a bike has depends on the position of the instant centre (see overleaf). The further forward and lower the IC, the less antirise. Twin-link and Horst link designs, particularly those with co-rotating links, tend to have an IC that’s further forward than on a single-pivot bike.
What effects does it have? High levels of anti-rise cause suspension to sit deeper into its travel when braking, which can give progressive bikes a firmer feel when you’re on the anchors. On the plus side, anti-rise helps prevent brake dive, by stopping the rear suspension from rising as much under braking.