Zerode G1 And G2 Benefits


The limitations of a standard derailleur drive chain impose many restrictions on the pivot placement of ’normal’ MTB. Most frame designs try to achieve near vertical wheel paths to keep bob to a minimum.

Unfortunately the force applied to the wheel by a bump is never in a vertical direction! The force is always at an angle backwards. If the wheel path is vertical, a large part of the bump force just tries to stretch the swing arm and slow the bike down. This means the suspension is less effective, the bump slows the bike down more and impacts the tire harder hence the need for higher tyre pressures and heavier stronger wheels.

Zerode has located it’s swing arm pivot to maximise pedalling performance. This pivot position also means the axle path is rearward so most of the bump force is used to get the wheel out of the way and very little is slowing you down. The wheel path also gives the wheel more time to get out of the way of the bump, reducing the impact on the wheel, slowing you down less and allowing you to use lighter wheels.

Further improving the bump absorption ability of the Zerode is its centralised mass. We have taken the weight of the cluster and derailleur from the wheel and replaced them with a gearbox mounted in the front triangle. In engineer speak we have increased the sprung to unsprung ratio. The unsprung weight is the rear wheel, brake calliper and suspension, the sprung weight is the rider, frame, handle bars etc. The more weight you can move from unsprung to sprung the better the bump response of your suspension and the less your sprung mass (the rider) is affected as you hit bumps. So your bike rides smoother and you go faster.

The improvements in bump absorption made by Zerode are very real. Wheel path, wheel response time, centralised mass all equate to impressive rear suspension performance. The first time you slam into a big square edge bump on your Zerode you will agree…

We all know the feeling of skipping gears. Whether it is caused by bashing your expensive derailleur on a rock or all of those little pivots wearing out, the result is the same, poor shifting, no confidence and a riding experience that is less than desirable. The Zerode gearbox changes all of this. Seamless shifts,up or down, even if your bike is caked in mud. Your Chain will last for years not months because they aren’t tortured into climbing up and down clusters and the Gearbox itself is a sealed self contained unit that requires little maintenance. You will never drop a chain because the gearbox allows a fool poof chain guide to be built into the frame.

We put a lot of testing into selecting our gearbox and after thousands of downhill runs and trails rides on the same unit we are confident we’ve made the right choice and sure you’ll agree.

Once again very real improvements in your bikes performance have been made through Zerode’s redesign of the mountain bike frame from the ground up. This truly is the future of mountain biking….

One of the key goals in chassis design is moving weight from the extremities to the middle of the vehicle, as well as reducing the weight of the unsprung parts ie wheels, cluster, derailleur etc.

On Zerode gearbox bikes the weight of the derailleur and cluster is removed from the wheel and placed in the middle of the frame. This makes the bike more maneuverable, better balanced, with better suspension.

A more balanced bike with better suspension can travel faster over rougher terrain with less rider fatigue and less disruption to the bikes velocity and direction of travel.

What you will experience as a rider is less terrain effected instability, when you are attacking a rough or rutted section of track the bike will stay more stable while the wheels will spend more time on the ground giving the rider the grip they need to turn, brake and accelerate harder than anyone else. End result a faster, smoother ride.

Although the engine on a MTB is not as powerful or smooth as that of a Moto, the physics behind the suspension response under power is exactly the same. In a nutshell there is a tug of war going on between two separate effects.

Firstly, with each power stroke from the rider, weight transfer will load up the rear of the bike and the rear suspension will want to compress ( a similar effect to the compression of the front fork when the front brake is applied).

Secondly, the traction force ( grip between the tyre and ground) tries to extend the suspension by rotating the suspension about it’s pivot. The chain line modifies the amount of extension depending on it’s position relative to the pivot.

The key on a mountain bike is to balance these two opposing effects by correct placement of the pivot and chain line, without the limitations imposed by a conventional derailleur system this is achievable I.e. With the Zerode suspension design the extension force is equal and opposite to the compression force the net result is Zero force, Zero compression, Zero extension, Zero Bob……….

Other suspension designs claim Zero bob, but without fail they achieve this by using chain force, pedalling platform shocks, lockouts….All of which lockout the suspension to some degree and result in pedal feedback, loss of traction and turning your suspension components into dead weight. These are just band aids for a poorly designed suspension. The Zerode suspension system allows the suspension to stay supple and active, adding traction, allowing you to pedal over rough terrain, out of corners.… without your precious energy being leached away by Bob.