Originally Posted by Julius

As ther rules state no centax style clutches I’d say this one is fine within the rules. The main difference between centax and early style clutches is the way the clutch engages. This clutch still engages in a radial way, and is only centrifugal. The centax moves the clutch meterial axially and has a big advantage in rotating mass, especially as the diameter of the moving parts can be much smaller.

This is a much less complicated setup than the buku clutch in my opinion. And still needs a conventional clutch bell. From a performance perspective one could even argue the buku is more of an advantage as with buku you can adjust without removing the clutch bell.

The efra/ifmar rule is wrong in wording. As the buggy based clutch is actually a radial clutch. The clutch shoes move out radially.....
A centax clutch combines radial movement of flyweights and translates that into axial movement of the clutch shoe. So according to efra no clutch is legal.... Is a copy paste from roar that made the original mistake. Ifmar states no centax style clutches, which this nor the buku is.