Bike Anti-Porn - When Things Go Wrong

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gbj_tester in reply to @tbc

Why does it need a rear disc wheel!?

The disc in conjunction with the housing forms a Tesla turbine pump, drawing air in at the chain entry holes and expelling it behind the tyre. This provides extra thrust.

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HHC in reply to @gbj_tester

But if the holes are either side of the horizontal line through the centre of the wheel, would the effect be cancelled?

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gbj_tester in reply to @HHC

if the holes are either side of the horizontal line through the centre of the wheel, would the effect is cancelled?

No, as long as the intake it at a smaller radius than the outlet, a centrifugal pump will work.

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