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G3™ geometry: reinvent the wheel, not just its look

CAMPAGNOLO® HAS DEVELOPED AN ASSEMBLY ARCHITECTURE WHICH, COMPARED WITH A TRADITIONAL WHEEL, MAKES IT POSSIBLE TO IMPROVE ENERGY TRANSFER, REDUCE THE STRESS ON THE SPOKES ON THE RIGHT AND INCREASE TRANSVERSE RIGIDITY.

the asymmetrical dish of the rear wheel, resulting from the space required by the freewheel body, gives rise to a differentiated stress level in the two assembly sides. The left-hand side of a traditional rear wheel generally records a stress level of about 60/65% of that on the right. A difference in the traction on the rim sometimes gives rise to structural instability and loss of spoke tension on the left.

In the G3™ geometry the right-hand side of the rear wheel is fitted with twice as many spokes as the left.
This means that, with the same traction on the rim, each spoke is subject to about half the traction of that in a traditional wheel.
While staying well away from the maximum stress reached by a spoke in the right-hand side of a traditional rear wheel, we preferred to keep an overall higher stress level in order to guarantee greater resistance to lateral flexure which is exercised on the wheel in curved paths and above all when riding off the saddle on ascents.

On the freewheel body side, of course, the paired spokes are assembled using a tangential configuration, the only solution really able to adequately transfer the torque moment produced by chain traction without dispersing a notable quantity of energy.

The results of G3 system are truly extraordinary:
• better transfer of the driving torque
• better lateral rigidity
• reduction of the stress in the rear wheel spokes
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