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Forum: Propellers & Drive Systems

11-08-2016, 19:10

Replies: 25

Prop Freewheeling or dragged?

Views: 6,043

Posted By StuM

Re: Prop Freewheeling or dragged?

I wouldn't dream of telling a gyrocopter pilot that there is less drag freewheeling a gyrocopter or helicopter rotor or an aircraft propeller.

But you are comparing a totally different profile...

Forum: Propellers & Drive Systems

11-08-2016, 15:40

Replies: 25

Prop Freewheeling or dragged?

Views: 6,043

Posted By StuM

Re: Prop Freewheeling or dragged?

Here ya go: https://www.catamaransite.com/files/YANMAR_MSA08-003_Neutral_Sailing.pdf

And from the Volvo 22 Series manual:

Forum: Propellers & Drive Systems

11-08-2016, 15:36

Replies: 25

Prop Freewheeling or dragged?

Views: 6,043

Posted By StuM

Re: Prop Freewheeling or dragged?

Advertorial by the makers of a shaft lock?

Those "tests" are theoretical calculations based on "cavitation tunnel" data and shaft friction. And his logical in applying that data is severely flawed...

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