Magnetometer??

[David Koehler]

Greetings All,
does anyone have an operational magnetometer on their plane. I would like to
find out the distances from electrical wire and ferrous bolts and nuts. The
installation notes has wording like "As far as possible", "Not too close". I
thought for a second that I was talking to my Ex.... If anyone could give
me distances in feet and inches I would really appreciate it, I want to
place the mount in the wing before I finish closing it up. Thanks for any
help you guys can give.
david

[Montblack]

("David Koehler" wrote)
[edited for humor]
> The installation notes has wording like "As far as possible", "Not too
> close". I thought for a second that I was talking to my Ex.... If anyone
> could give me distances in feet and inches I would really appreciate it, I
> want to place the mount in the wing before I finish closing it up. Thanks
> for any help you guys can give.


"As far as possible", "Not too close". I thought for a second that I was
talking to my Ex....

"If anyone could give me distances in feet and inches I would really
appreciate it,"

Um, was that her, the Ex, talking again?


Montblack :-)

[David Koehler]

"Montblack" > wrote in message
...
> ("David Koehler" wrote)
> [edited for humor]
> > The installation notes has wording like "As far as possible", "Not too
> > close". I thought for a second that I was talking to my Ex.... If
anyone
> > could give me distances in feet and inches I would really appreciate it,
I
> > want to place the mount in the wing before I finish closing it up.
Thanks
> > for any help you guys can give.
>
>
> "As far as possible", "Not too close". I thought for a second that I was
> talking to my Ex....
>
> "If anyone could give me distances in feet and inches I would really
> appreciate it,"
>
> Um, was that her, the Ex, talking again?
>
>
> Montblack :-)
>

well,,, If she was talking in distances of feet, she wasn't talking to me.

Oh FYI the magnetometer is for my plane, I got divorced and quit smoking,
wow, have enough money to buy a kit plane....

[Montblack]

("David Koehler" wrote)
> Oh FYI the magnetometer is for my plane, I got divorced and quit smoking,
> wow, have enough money to buy a kit plane....


Congrats on the quit smoking.

What kind of plane is it? I read the 'composite project in the hot garage'
thread a while back. Looked it up again tonight - no plane type ...unless I
missed it.


Montblack

[Morgans]

"David Koehler" > wrote
>
> Oh FYI the magnetometer is for my plane, I got divorced and quit smoking,
> wow, have enough money to buy a kit plane....

I like all of the "good natured ribbing," but I guess in a way, what we are
saying is that weasel words are good enough for what I am guessing you are
asking. If you are asking about where to put a compass, you put it as far
away as you think can, from the ferrous metals and currents, (especially
large ones) and where you still can see it to be easily read. The rest can
be tuned out using the compensators built into the compass.

If that is not what you are asking, "nevermind." <g>

After all, the best place to put it, would be on a boom out away from the
plane by several feet, or trailing the plane on a long string, but it would
not be of any use to us, either of those places, or any of a number of other
places.

Where do you usually see a compass? If it is a whiskey compass, it is
usually on the glareshield, or at the top of the windshield. Usually, it is
in the middle, so you can see it from both sides of the cockpit, but also so
it is somewhat (more weasel words) in the middle (symmetrically) of the
interfering metals and currents.

If it is a type that has a remote sensor package, then you get lots more
options.

Generally, you put it far away from the engine as possible in an aluminum
plane, or away from metal frame members in a tube and fabric plane. I'm
sure your literature on the specific instrument has some pretty good
guidelines; follow them the best you can, and it will be good enough.

And of course, this advice is worth exactly what you paid for it. ;-)
--
Jim in NC

[Flyingmonk]

>What kind of plane is it?


let me take a wild guess here, a GlasAir?

[Lou]

So, does that mean it doesn't matter were you put it in a wood and
fabric plane?

[Bushy Pete]

"Lou" > wrote in message
oups.com...
> So, does that mean it doesn't matter were you put it in a wood and
> fabric plane?
>

Nah, you still have to get it away from the nails!

Pete

[Lou]

No nails, just glue

[Morgans]

"Lou" > wrote

No nails, just glue

I think he knows that. I *hope* he knew that. <g>

What kind of device? You still have not said.

Low wing, high wing, electrical system, instruments installed, makeup of
instrument panel and materials used in the mountings? More details, if
anyone is to give a reasonable answer.
--
Jim in NC

[David Koehler]

Super close, it's a Glastar sportsman. I didn't have the huh-huhs to do all
glass and plus the speed, the glasair gets there too darn fast. Alcohol
causes the reaction time to slow, so I picked a plane to cruise with....
I know what your going to say, but just stop and check the regs. It says no
drinking 8 hours prior, it doesn't say anything about after you yell "Clear"
and crank that sucker off. The regs specifically says you can throw stuff
out the window(or door) while flying(no deposit, no return),,, Bottom line,
They want you to drink and fly. I'll tell ya, Martha King didn't say it, you
just need to read between the lines......
Sorry to get off track, the resin, my eaa man told me to but it in the
refrigerator and it worked. Simple as heck after someone tells you about it.
Now its the magnetometer, I want to build a mount before I close in
eyerything, but I don't know how sensitive these things are. Or where would
be the best place to put them. I guess I need to call my EAA man, if he
hasn't talked to my Ex., he might be able to tell me where....
david

"Flyingmonk" > wrote in message
ups.com...
> >What kind of plane is it?
>
>
> let me take a wild guess here, a GlasAir?
>

[David Koehler]

FYI a magnetometer is a compass for a computer, I want to put in a GRT
system, while in construction, I was looking for the best place to place it.
The kit is a glastar, which has a metal cage along with all the ferrous
metals in the wing and control cables in the fuselage. I have fun while I'm
working because I'm not getting paid now.
david

"Morgans" > wrote in message
...
>
> "David Koehler" > wrote
> >
> > Oh FYI the magnetometer is for my plane, I got divorced and quit
smoking,
> > wow, have enough money to buy a kit plane....
>
> I like all of the "good natured ribbing," but I guess in a way, what we
are
> saying is that weasel words are good enough for what I am guessing you are
> asking. If you are asking about where to put a compass, you put it as far
> away as you think can, from the ferrous metals and currents, (especially
> large ones) and where you still can see it to be easily read. The rest
can
> be tuned out using the compensators built into the compass.
>
> If that is not what you are asking, "nevermind." <g>
>
> After all, the best place to put it, would be on a boom out away from the
> plane by several feet, or trailing the plane on a long string, but it
would
> not be of any use to us, either of those places, or any of a number of
other
> places.
>
> Where do you usually see a compass? If it is a whiskey compass, it is
> usually on the glareshield, or at the top of the windshield. Usually, it
is
> in the middle, so you can see it from both sides of the cockpit, but also
so
> it is somewhat (more weasel words) in the middle (symmetrically) of the
> interfering metals and currents.
>
> If it is a type that has a remote sensor package, then you get lots more
> options.
>
> Generally, you put it far away from the engine as possible in an aluminum
> plane, or away from metal frame members in a tube and fabric plane. I'm
> sure your literature on the specific instrument has some pretty good
> guidelines; follow them the best you can, and it will be good enough.
>
> And of course, this advice is worth exactly what you paid for it. ;-)
> --
> Jim in NC
>

[Dan, U.S. Air Force, retired]

David Koehler wrote:
> FYI a magnetometer is a compass for a computer,

Aha,I was wondering what this thread was about. I guess it is a
matter if definition. The basic definition of a magnetometer as I
understand it is to detect and measure magnetic fields. None of the
magnetometers I have used were small enough, light enough or logically
located in a cockpit. Then again none were connected to a computer.

Dan, U.S. Air Force, retired

[David Koehler]

Hi Dan,
this one is fairly small, it feeds a computer for a EFIS system. Grand
Rapids uses them on their system. From what I heard once it's setup your
finished with it. That sure beats the heck out of adjusting for drift every
15 minutes on a heading indicator.

"Dan, U.S. Air Force, retired" > wrote in message
news:uIrnf.60036$sg5.34729@dukeread12...
> David Koehler wrote:
> > FYI a magnetometer is a compass for a computer,
>
> Aha,I was wondering what this thread was about. I guess it is a
> matter if definition. The basic definition of a magnetometer as I
> understand it is to detect and measure magnetic fields. None of the
> magnetometers I have used were small enough, light enough or logically
> located in a cockpit. Then again none were connected to a computer.
>
> Dan, U.S. Air Force, retired

[Dan, U.S. Air Force, retired]

David Koehler wrote:
> Hi Dan,
> this one is fairly small, it feeds a computer for a EFIS system. Grand
> Rapids uses them on their system. From what I heard once it's setup your
> finished with it. That sure beats the heck out of adjusting for drift every
> 15 minutes on a heading indicator.
>
> "Dan, U.S. Air Force, retired" > wrote in message
> news:uIrnf.60036$sg5.34729@dukeread12...
>
>>David Koehler wrote:
>>
>>>FYI a magnetometer is a compass for a computer,
>>
>> Aha,I was wondering what this thread was about. I guess it is a
>>matter if definition. The basic definition of a magnetometer as I
>>understand it is to detect and measure magnetic fields. None of the
>>magnetometers I have used were small enough, light enough or logically
>>located in a cockpit. Then again none were connected to a computer.
>>
>> Dan, U.S. Air Force, retired
>
>

I installed flux valves is extraodinarilly difficult places on some
aircraft and amazingly easy on others (if you aren't afraid of heights).
I have come to the conclusion there's a conspiracy among the makers of
flux valves to have them fail in extremely hot weather, extremely cold
weather or when I was the only one left in the shop who has swung one.
In the latter case you would have seen some rather large swing crews :)
MC-1 compass swing set ring a bell, anyone?

I wonder if the magnetomer you are using is anywhere near as
sensitive to induction as a flux valve. If it isn't I'd say you could
get away with mounting it resonably distant from electrical systems. If
you have ever seen a mag compass drift when lighting, pitot heat or the
like is turned on/off you'll have an idea of what too close is.

Other than that I'm not sure what I can do offer. Have you contacted
the maker?

Dan, U.S. Air Force, retired

[Don Hammer]

On larger aircraft they usually call out only non-ferris screws within
about 18" or so, epending on the manufacturer. They are usually in
the wing tips about the same distnce from the nav lights and strobes.
We swing the compasses when done and adjust them for their location.

[Dan, U.S. Air Force, retired]

Don Hammer wrote:
> On larger aircraft they usually call out only non-ferris screws within
> about 18" or so, epending on the manufacturer. They are usually in
> the wing tips about the same distnce from the nav lights and strobes.
> We swing the compasses when done and adjust them for their location.


Those are the easy ones. Nothing like leaning on a speed handle
looking straight down at the ground a dozen feet below. In UH-1P it's
in the boom on the other side of a bulkhead from the access panel on the
bottom of the boom. Compass swings were quite amusing.

Degaussing windscreens in the rain is also fun. As Don said
nonferrous screws are the only ones allowed within a specified radius.
However ferrous metals do wind up close to mag compasses. I found one
aircraft type, I forget which, has the compass light switch right next
to it. You guessed it, it ferrous content. Since it was mounted under
the compensation magnets I don't think it mattered much, but the compass
moved a couple of degrees when the light was turned on.

Dan, U.S. Air Force, retired

[Roger]

On Mon, 12 Dec 2005 17:27:37 -0500, "Morgans"
> wrote:

>
>"Lou" > wrote
>
>No nails, just glue

Are you kidding? The last wood plane two wood planes I saw had more
nails in them than there are rivetts in a metal plane. The wing ribs
were built just like those in a model plane, except they used small
nails instead of pins. Tail, rudder, horizontal stab, elevator... All
the same way.
>
> I think he knows that. I *hope* he knew that. <g>
>
>What kind of device? You still have not said.
>
Then when you get done there are still all the steel control cables.
Electrical wiring...if it has an electrical system.

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com

>Low wing, high wing, electrical system, instruments installed, makeup of
>instrument panel and materials used in the mountings? More details, if
>anyone is to give a reasonable answer.

[Morgans]

"Roger" wrote

> Are you kidding? The last wood plane two wood planes I saw had more
> nails in them than there are rivetts in a metal plane. The wing ribs
> were built just like those in a model plane, except they used small
> nails instead of pins. Tail, rudder, horizontal stab, elevator... All
> the same way.

True, some use nails, and some use tack strips and pull all of them after
the glue is set. Some don't. I don't know what I was thinking. Reality is
a lot different than ideal practice, huh?

My wood plane would have no nails, and no metal in it at all. Ceramic
engine, Kevlar cables, Unobtanium where necessary ....the whole works. I'm
not even going to use a transponder. I'm going for stealth, you know.
Staying under the radar. <g>

Let's hope they at least used non magnetic stainless nails..... Oh, there
goes that darn ideal vs. reality again. <g>

Jim wrote

> >Low wing, high wing, electrical system, instruments installed, makeup of
> >instrument panel and materials used in the mountings? More details, if
> >anyone is to give a reasonable answer.

At least I asked for more details. That would help, in this case.

I think I don't like which way this whole thread is headed, anyway. I'm
going to back out gracefully..... or maybe stumbling! <g>

[AINut]

David, which magnetometer are you using and where did you buy it, please?

David M.


David Koehler wrote:
> FYI a magnetometer is a compass for a computer, I want to put in a GRT
> system, while in construction, I was looking for the best place to place it.
> The kit is a glastar, which has a metal cage along with all the ferrous
> metals in the wing and control cables in the fuselage. I have fun while I'm
> working because I'm not getting paid now.
> david
>
> "Morgans" > wrote in message
> ...
>
>>"David Koehler" > wrote
>>
>>>Oh FYI the magnetometer is for my plane, I got divorced and quit
>
> smoking,
>
>>>wow, have enough money to buy a kit plane....
>>
>>I like all of the "good natured ribbing," but I guess in a way, what we
>
> are
>
>>saying is that weasel words are good enough for what I am guessing you are
>>asking. If you are asking about where to put a compass, you put it as far
>>away as you think can, from the ferrous metals and currents, (especially
>>large ones) and where you still can see it to be easily read. The rest
>
> can
>
>>be tuned out using the compensators built into the compass.
>>
>>If that is not what you are asking, "nevermind." <g>
>>
>>After all, the best place to put it, would be on a boom out away from the
>>plane by several feet, or trailing the plane on a long string, but it
>
> would
>
>>not be of any use to us, either of those places, or any of a number of
>
> other
>
>>places.
>>
>>Where do you usually see a compass? If it is a whiskey compass, it is
>>usually on the glareshield, or at the top of the windshield. Usually, it
>
> is
>
>>in the middle, so you can see it from both sides of the cockpit, but also
>
> so
>
>>it is somewhat (more weasel words) in the middle (symmetrically) of the
>>interfering metals and currents.
>>
>>If it is a type that has a remote sensor package, then you get lots more
>>options.
>>
>>Generally, you put it far away from the engine as possible in an aluminum
>>plane, or away from metal frame members in a tube and fabric plane. I'm
>>sure your literature on the specific instrument has some pretty good
>>guidelines; follow them the best you can, and it will be good enough.
>>
>>And of course, this advice is worth exactly what you paid for it. ;-)
>>--
>>Jim in NC
>>
>
>
>

[David Koehler]

David,
Hi, I don't know what the brand name of the magnetometer is, the system I
want to get is made by Garnd Rapids Technologies. I have the "Installation
Guide" which is vage as heck. I wanted to build a platform to mount it on in
the wing( nothing showing outside). My wing is full of junk, ferrous nuts,
bell cranks(two), electric fuel transfer pump, cables, and strobe wiring.
Today, I went and looked at another plane, it's a glastar without aux tanks.
He has a Blue Mountain system(high dollar), and his is about 6 inches away
from the bellcrank and right over a inspection plate(ferrous nuts). The
strobe wires are about 10 inches away, he says it works great.
I would think that all of these things work the same and should be just as
sensitive as the next. I'm going to put it in the right wing cause it's the
one on the table now. I won't know if it works or not until I finish
building. Oh, I haven't bought the system yet, I ordered the magnetometer so
I could mount it. If you want when I get it, I'll send you the info on the
unit.
david
"AINut" > wrote in message
...
> David, which magnetometer are you using and where did you buy it, please?
>
> David M.
>
>
> David Koehler wrote:
> > FYI a magnetometer is a compass for a computer, I want to put in a GRT
> > system, while in construction, I was looking for the best place to place
it.

[Roger]

On Wed, 14 Dec 2005 02:50:25 -0500, "Morgans"
> wrote:

>
>"Roger" wrote
>
>> Are you kidding? The last wood plane two wood planes I saw had more
>> nails in them than there are rivetts in a metal plane. The wing ribs
>> were built just like those in a model plane, except they used small
>> nails instead of pins. Tail, rudder, horizontal stab, elevator... All
>> the same way.
>
>True, some use nails, and some use tack strips and pull all of them after
>the glue is set. Some don't. I don't know what I was thinking. Reality is
>a lot different than ideal practice, huh?
>
>My wood plane would have no nails, and no metal in it at all. Ceramic
>engine, Kevlar cables, Unobtanium where necessary ....the whole works. I'm
>not even going to use a transponder. I'm going for stealth, you know.
>Staying under the radar. <g>

Kinda like the tail in my G-III where they have you put the nav
antenna. Of course it's molded right to a carbon fiber shell.
Maybe it'll work, but by the time I get to use it I may be too old to
care.

Then there's all the salt from the sweat of working inside there.
Does swearing add to conductivity or magnetism? If so, how do your
degauss a fiberglass airplane?

>Let's hope they at least used non magnetic stainless nails..... Oh, there
>goes that darn ideal vs. reality again. <g>

You could always go with brass which is diamagnetic.

Man, I thought there was a lot of detail in the G-III and there is,
but after I watched Jack build the GP-4 and saw the insides of the
Barracuda I'd hate to see something with a *lot* of detail..

Roger Halstead (K8RI & ARRL life member)
(N833R, S# CD-2 Worlds oldest Debonair)
www.rogerhalstead.com
>
>Jim wrote
>
>> >Low wing, high wing, electrical system, instruments installed, makeup of
>> >instrument panel and materials used in the mountings? More details, if
>> >anyone is to give a reasonable answer.
>
>At least I asked for more details. That would help, in this case.
>
>I think I don't like which way this whole thread is headed, anyway. I'm
>going to back out gracefully..... or maybe stumbling! <g>

[AINut]

Yes, please do.

David M.



David Koehler wrote:
> David,
> Hi, I don't know what the brand name of the magnetometer is, the system I
> want to get is made by Garnd Rapids Technologies. I have the "Installation
> Guide" which is vage as heck. I wanted to build a platform to mount it on in
> the wing( nothing showing outside). My wing is full of junk, ferrous nuts,
> bell cranks(two), electric fuel transfer pump, cables, and strobe wiring.
> Today, I went and looked at another plane, it's a glastar without aux tanks.
> He has a Blue Mountain system(high dollar), and his is about 6 inches away
> from the bellcrank and right over a inspection plate(ferrous nuts). The
> strobe wires are about 10 inches away, he says it works great.
> I would think that all of these things work the same and should be just as
> sensitive as the next. I'm going to put it in the right wing cause it's the
> one on the table now. I won't know if it works or not until I finish
> building. Oh, I haven't bought the system yet, I ordered the magnetometer so
> I could mount it. If you want when I get it, I'll send you the info on the
> unit.
> david
> "AINut" > wrote in message
> ...
>
>>David, which magnetometer are you using and where did you buy it, please?
>>
>>David M.
>>
>>
>>David Koehler wrote:
>>
>>>FYI a magnetometer is a compass for a computer, I want to put in a GRT
>>>system, while in construction, I was looking for the best place to place
>
> it.
>
>

[Don Hammer]

>magnetometer

Commonly called a flux gate in the airplane business. It is nothing
more that a mag compass that has outputs to run to the DG etc to tell
where it is pointing. Treat it like the whisky compass and you won't
have any problems. Just like any other compass, it can be compensated
for minor interference, so you don't have to be paranoid about it.
Just don't run the strobe wires over it or use ferris screws to tie it
down.

[RST Engineering]

Aren't ferris screws used to hold a ferris wheel together?

{;-)

Jim


"Don Hammer" > wrote in message
...

> Just don't run the strobe wires over it or use ferris screws to tie it
> down.

[Rich S.]

"RST Engineering" > wrote in message
.. .
> Aren't ferris screws used to hold a ferris wheel together?

Naw. That's what you *do* on the Ferris wheel if she'll letya. ;-)

Rich S.

[David Koehler]

Hi Jim, have you thought about that 500 cycle tone, I could use some
suggestions.
david


"RST Engineering" > wrote in message
.. .
> Aren't ferris screws used to hold a ferris wheel together?
>
> {;-)
>
> Jim

[Montblack]

>> Aren't ferris screws used to hold a ferris wheel together?

("Rich S." wrote)
> Naw. That's what you *do* on the Ferris wheel if she'll letya. ;-)


Ferris: Cameron has never been in love - at least, nobody's ever been in
love with him. If things don't change for him, he's gonna marry the first
girl he lays, and she's gonna treat him like ****, because she will have
given him what he has built up in his mind as the end-all, be-all of human
existence. She won't respect him, 'cause you can't respect somebody who
kisses your ass. It just doesn't work.

Ferris Bueller's Day Off (1986)


Montblack

[Rich S.]

"Montblack" > wrote in message
...
>>> Aren't ferris screws used to hold a ferris wheel together?
>
> ("Rich S." wrote)
>> Naw. That's what you *do* on the Ferris wheel if she'll letya. ;-)
>
>
> Ferris: Cameron has never been in love - at least, nobody's ever been in
> love with him. If things don't change for him, he's gonna marry the first
> girl he lays, and she's gonna treat him like ****, because she will have
> given him what he has built up in his mind as the end-all, be-all of human
> existence. She won't respect him, 'cause you can't respect somebody who
> kisses your ass. It just doesn't work.
>
> Ferris Bueller's Day Off (1986)

We even have a State agency dedicated to this subject:
http://www.wsdot.wa.gov/ferries/

Rich

[Darrel Toepfer]

Rich S. wrote:

> We even have a State agency dedicated to this subject:
> http://www.wsdot.wa.gov/ferries/

That state government and its online regulation of flying gnomes is
disturbing...

To say nothing if this is to do with somethings sexual orientation
instead of the ramifications of excessive pixie dusting...










;)