Numbness in the fingers is a common problem, which often arises from an overstretching of the wrist.In a neutral posture, our wrists are naturally straight.
For arm positions that are wider than shoulder-width, for example when holding a MTB handlebar, we prevent an overstretching of the wrist through a backsweep.
But for arm positions closer than shoulder-width, a backsweep would stretch the wrist again. That‘s why the 312 R has a frontsweep of 10°, to ensure a straight transition from the forearm to the hand.
The Ergobar is a wave-shaped elevation on the underside. This results in a flat, slightly angular underside of the handlebar. Fits perfectly to the angled, bent fingers.
The area which is flattened at the top and extended far forward is maximally large. This allows the fingers to safely enclose the handlebar and at the same time provides grip.
The combination of contact surface and freedom of movement ensure the best possible pressure distribution.
The pressure measurement shows that the maximised contact surface of the 312R handlebars enables an even distribution of pressure on the hands.
The pressure distribution is shown in colour: white means low pressure, from blue/green/yellow/orange to red the pressure increases.
The individual handlebar width is decisive for an ergonomic position on the road bike and depends on the shoulder width.
Shoulder width = Handlebar width
Shoulder width = distance from the left to the right acromion of the shoulder.