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OSY 400 shaft irregularities

Tony Blom-Pettersen on 24th September 2022

Not only is San Nazzaro hosting two rounds of the 2022 UIM F1H2o World Championship this weekend, the OSY 400 class racers are also competing at the highest level.

After today’s free practice, there was drama before the competition had even started.

The UIM’s technical delegate, Barry Turner (above) explained:

The propeller shaft cannot be more than 25mm below.


Certain teams have now found ways to try to gain an advantage.


We should not have this.


Some will have to adjust before the first heat.

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