Re: Affordable 3-inch Electronic HSI (They claim...)

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Subject:	Re: Affordable 3-inch Electronic HSI (They claim...)
From:	Bob Moore
Date:	Sun Feb 18 05:43:22 2001

grpphoto@earthlink.net wrote:
>
>
>Bob Moore wrote:
>> Why would an "HSI" (horizontal situation indicator) be any more dependable
>> than a "plain DG" (directional gyro) ?
>
>Most of them use gyros that are driven by electric motors. The dry
>vacuum pump is much less reliable.

Hmmm...back to comparing apples to oranges.

Bob Moore

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