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Date: Wed, 13 Jun 2012 15:59:17 -0400
From: Ernest Christley <echristley@att.net>
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To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: IVO Prop Users...
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Kelly Troyer wrote:
> Rich,
>   I agree on your assessment on the use of the prop to control
> rpm.............The ammeter is merely a tool to avoid
> poping the IVO adjust motor elect breaker when reaching both the fine or
> coarse pitch limit stops and with
> enough use the pilot can learn to approx where the prop is pitched
> to.............Several of our group flying behind
> or ahead of the IVO use an ammeter for this purpose..............
>  

Why in the world would IVO use a device that is designed to fail critical flight gear in the case of improper control
manipulation when they don't have to?  Isn't this the classical and proper application for a polyfuse?  Polyfuses are
used in power windows for this exact reason.  You're kids can pull on that switch all day without damaging the window
motor.  I'm thinking of the case where a switch gets shorted (like my belt sander's switch is right now...the power cord
is serving as a temp fix until I get time), or someone accidentally leans something against the switch.