Crafting a mirrored shifting drum for motorcycle gearbox

Question

I would like to reverse the gearing of my Husaberg FS 650e motorcycle so that by pressing the shifting pedal the gearbox changes up instead of down to the first gear.

There are many solutions on the market consisting of linkages that redirect the movement of the shifting pedal. Unfortunately this is not possible on my bike.

First of there is no ready to buy solution, secondly there is not enough free space around the shaft that would make this approach feasable.

So I am wondering if theoretically a mirrored/inversed shifting drum would accomplish this?

niels nielsen · Answer

To answer this question you must furnish a complete kinematic model of the entire shifter mechanism, and then study it to determine exactly how to reverse the indexing action by recutting the shifting drum.

Neither of these tasks will be straightforward.

You would be better off designing a simple 2-gear reverser mechanism which would bolt on to the shifter shaft and transmission housing, or by asking yourself just how important it really is to reverse the shifting action on that bike.

Crafting a mirrored shifting drum for motorcycle gearbox

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