2moto

Innovation on 2 wheels

Norick Abe YZR-500 Replica

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The spiritual successor to the RD-350

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95Racer: 95bhp and 95kg

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Norick Abe YZR-500 Replica

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The spiritual successor to the RD-350

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YZR-500 Frame Kit

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The spiritual successor to the RD-350

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Rear wheel nut conversion

One of the features on the Honda NC30/35 swinging arm hub we didn't particularly like, was the rear wheel nut arrangement. This is probably due to the inevitable comparison to the way Ducati designed it. So, after a bit of measuring up and thinking, we decided to convert to use a single threaded wheel nut, and do away with the long bolt that goes through the standard Honda hub.

We had an engineering shop cut an internal thread into the original hub. The reason for an internal thread is that it wouldn't get damaged when the wheel is fitted repeatedly. Plus, an external thread would have meant an enlargement of the centre hole in the wheel. Here is the new one piece wheel nut. The bi-hex is the same size as the Ducati race bikes and also the MV Agusta. We already had the socket from our racing days on a Ducati Corsa.

 

The keen observer will have noticed that it is a left hand thread. This is so that the nut tightens itself as you ride the bike and obviates the need for a retaining clip. Not our idea, I am afraid, but it is how all Ducati race bikes with the large Corse rear hub are done. And here is what it looks like installed.