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Re: Europa-List: Constant Speed Prop and failure modes.

Subject: Re: Europa-List: Constant Speed Prop and failure modes.
From: josok <josoke@ukolo.fi>
Date: Fri, 20 Mar 2009 03:10:57

Thanks for the clear story Bud,

[quote:022a4d2f87]The Airmaster has a dedicated manual control which bypasses 
everything
to give you electric pitch control and a mechanical stop. Propellers,
such as the Woodcomp, with Beta (reversing) do not have mechanical stops, only
electric. [/quote:022a4d2f87]
Just one correction: The SR 3000 does not have mechanical stops, not on any 
non-reversable
or feathering either. 

[quote:022a4d2f87]A number of aircraft were lost in the 30's because of runaway
props. Consequently reputable manufactures make sure they have manual backups
and mechanical stops to prevent aircraft loss.[/quote:022a4d2f87]

And i might add that manual backup does not help if the pitch motor belongs in
a toy car.

Regards,

Jos Okhuijsen


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