Vertical card compasses

[Dan Luke]

If you have one, how do you like it? Do you ever notice that it does not
return to the same indication when the airplane returns to the same
heading (hysteresis error)? IOW, if you turn from 090 to 180 and back to
090 according to the HI, would your VCC come all the way back to 090, or
would it stop at 095?

How's yours doing, Jay?
--
Dan
C172RG at BFM
(remove pants to reply by email)

[Jay Honeck]

> How's yours doing, Jay?

I love(d) mine. Never noticed any errors at all.

Sadly, it went with my Warrior, and I haven't found an excuse to put one in
my Pathfinder -- yet.

The new owners -- good friends of ours -- like the vertical card compass a
lot, too. It's just a superior instrument.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"

[Dan Luke]

"Jay Honeck" wrote:
> > How's yours doing, Jay?
>
> I love(d) mine. Never noticed any errors at all.
>
> Sadly, it went with my Warrior,

Oh, I thought it was in the Pathfinder.

> It's just a superior instrument.

I'm lusting for one again. It's Michael's fault for bringing it up in
r.a.ifr.

The bad experiences the local aero club had with two installations have
put me off this far, but I'm weakening.
--
Dan
C172RG at BFM
(remove pants to reply by email)

[Kyler Laird]

"Dan Luke" > writes:

>The bad experiences the local aero club had with two installations have
>put me off this far, but I'm weakening.

Just do it. I like mine.

--kyler

[Jay Honeck]

> The bad experiences the local aero club had with two installations have
> put me off this far, but I'm weakening.

Like what?

Our VC compass was installed by my A&P, easy as pie, and worked great from
Day One.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"

[Dan Luke]

"Jay Honeck" wrote:
> > The bad experiences the local aero club had with two
> >installations have put me off this far, but I'm weakening.
>
> Like what?

Hysteresis errors: the compasses wouldn't return to the same indication
when you returned to the previous heading (according to the GPS or HI).
--
Dan
C172RG at BFM
(remove pants to reply by email)

[Dan Luke]

"Kyler Laird" wrote:

> Just do it.

Ya know, I think I just will.
--
Dan
C172RG at BFM
(remove pants to reply by email)

[[email protected]]

For what it's worth, I have zero hysteresis with mine. Could be where
it is mounted---they seem to be more sensitive to stray magnetic fields
than whiskey compasses. Mine is mounted on the windshield and works
flawlessly.

> Hysteresis errors: the compasses wouldn't return to the same indication
> when you returned to the previous heading (according to the GPS or HI).

[Dan Luke]

> wrote:
> For what it's worth, I have zero hysteresis with mine.
> Could be where it is mounted---they seem to be
> more sensitive to stray magnetic fields
> than whiskey compasses.

I'm beginning to suspect that must have been it. Both of the ones I know
of that had this trouble were mounted on the glare shields of 172s.
Trouble is, I also have a 172(RG).
--
Dan
C172RG at BFM
(remove pants to reply by email)

[Kyler Laird]

Mike Spera > writes:

>Next, I have seen several installations, especially in Pipers, where
>some idiot installed the thing buy bolting it onto the GLARESHIELD!

And a super-genius would mount it...uh...where exactly?
http://lairds.org/Kyler/photos/disk0019/img_0387.jpg/image_viewer

--kyler

[Hankal]

>.K. You got me. Some Pipers don't have a center windshield section
>where the compass is mounted. The odd installations I remember were 2

I have mine mounted where the wiskey compass was mounted in the center of the
glareshield.
I have Cessna 172
Hank

[Kyler Laird]

Mike Spera > writes:

>O.K. You got me. Some Pipers don't have a center windshield section
>where the compass is mounted.

I was half-expecting you to say to mount it up at the top of the
windshield. I suspect that it would be further away from distorting
fields there, but it would also be far away from the other instruments
(and my normal instrument scan area).

Anyone try something like that?

--kyler

[G.R. Patterson III]

Kyler Laird wrote:
>
> Anyone try something like that?

IIRC, that was the standard mounting in a Cessna 150. Worked well, as far as
I was concerned.

George Patterson
A diplomat is a person who can tell you to go to hell in such a way that
you look forward to the trip.

[[email protected]]

Mine (on a baby Beech) is mounted on the windshield. The only bug is
the wires that feed the internal light in the unit, but the added ease
of use is well worth it, in my opinion.

That being said, some of the mounts are actually for the glareshield,
and I know at least one that works fine. It has a thick pad between the
unit and the glareshield, I suppose it could be some kind of shielding.


>>Next, I have seen several installations, especially in Pipers, where
>>some idiot installed the thing buy bolting it onto the GLARESHIELD!
>
>
> And a super-genius would mount it...uh...where exactly?