[simpits-tech] Zero point on a two needle altimeter

[Rod Dale]

I tried that. I connected the servo to the arm that connects to the bellows
but because the gearing is very fine, a quarter turn of the servo put me
from 0 feet to 5000 ft !!!! The bellows don't move much at all. I ended up
ripping the inners out of the altimeter and connected the servo to the
centre shaft.
Rod
----- Original Message -----
From: Matt Bailey <mattb@rtccom.net>
To: <simpits-tech@simpits.org>
Sent: Saturday, October 26, 2002 3:36 PM
Subject: Re: [simpits-tech] Zero point on a two needle altimeter


> Something else I thought of...an altimeter uses a small air-tight box
> which expands and contracts with pressure changes, right? Maybe you
> could use the gearing inside a real altimeter (whatever the box is
> connected to) to control the altimeter with a servo. It would just have
> to be very very high resolution.
>
> -Matt Bailey
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