My opinion, but could be wrong (or incomplete).



The Sporty's unit is an Artificial Horizon/Attitude Indicator with an
inclinometer mounted on it. It probably does not have the canted gyro; I
don't see how it could, and still show accurate pitch information under all
conditions.

The old Turn And Bank instruments also did not have the canted gyro. They
were essentially an AH without the pitch information.

The newer Turn Coordinator instruments have the canted gyro so that they can
better (marginally better) function as an emergency replacement during an AH
failure, by being more sensitive to initial rate of change in roll
associated with a change in pitch (did I say that right?!).

With the electric AI, which makes a vastly better alternative to a failed
vacuum AI, you get both pitch and roll information. If you are actually
slipping or skidding, the superimposed slip-skid ball will still show that.
So my take is that you have gained the additional (vastly better) pitch
information, without giving up and roll or slip-skid information.

On top of that, you get a failed-gyro flag, that does not disappear until
the rotor is actually up to full speed; you get internal lighting; you get
caging capability, in case you are practicing maneuvers that can bang your
gyro around; and you get a gyro unit that is most likely better made than
the original one in your plane.





_____

From: musketeermail@yahoogroups.com [mailto:musketeermail@yahoogroups.com]
On Behalf Of Kerry Muller
Sent: Saturday, December 10, 2005 11:03 AM
To: musketeermail@yahoogroups.com
Subject: [musketeermail] Sporty's backup AI - question



One thing that I wonder about with Sporty's backup AI ... It is
approved to completely take the place of the turn indicator but it
seems to me that it operates just like an AI with a turn coordinator
stuck on it. So I'm guessing for example, that if you were to slip
around a turn with wings relatively level, a turn indicator would
show it whereas an AI would not. I think it has something to do with
the gyro being canted in a turn indicator.

So with Sporty's backup AI, do you lose the functionality of the turn
indicator?



--- In musketeermail@yahoogroups.com, "Mike Rellihan" <rellihan@r...>
wrote:
>
> I have one on order, but they claim it won't arrive until March
(delayed
> Christmas present to myself). The demand for these has been
phenomenal.
>
>
>
> -----Original Message-----
> From: bac-mail-bounces@b...
> [mailto:bac-mail-bounces@b...] On Behalf Of Greg MacPherson
> Sent: Friday, December 09, 2005 5:12 PM
> To: bac-mail@b...
> Subject: [BAC-Mail] Sporty's backup AI
>
> We are interested in any information from someone who has used the
Sporty's
> backup AI.
>
>
>
> Greg MacPherson, N18996
>
> 890 West End Avenue, #11C
>
> New York, NY 10025
>
> t 212-316-4590
>
> c 917-679-0565
>
>
>
> _______________________________________________
> BAC-Mail mailing list
> BAC-Mail@b...
> http://www.beechaeroclub.org/mailman/listinfo/bac-mail
>






Join BAC today and be a part of the ONLY Type Club for the Musketeer series!

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