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Removing 3 bladed prop on an Alberg 35

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Richard Casady Richard Casady is offline

Richard Casady is offline

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First recorded activity by BoatBanter: May 2007

Posts: 2,587

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Removing 3 bladed prop on an Alberg 35

On Fri, 17 Aug 2007 18:26:31 +0700, wrote:

Here's a little engineering insight. If a drive shaft is lightened
by drilling out an axial hole whose diameter is one half the outer
diameter - the shaft's strength in torque is reduced by 5% and its
weight is reduced by 25% This is important in aircraft
construction.

Driveshafts are usually tubes and not rods. Always for cars and big
ships. It is only the smaller boats that lack the space.

Casady

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