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Magnetometer Locations and seatbelt cable

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toaster73(at)embarqmail.c
Guest

Posted: Fri Jan 13, 2012 11:17 am Post subject: Magnetometer Locations and seatbelt cable

I was wondering if someone on this list mentioned they had made custom rear seat seatbelt anchor cables which were non-ferrous (stainless steel but non magnetic) so as to not interfere with the magnetometer mounted on a nearby shelf. If that someone is out there, please provide details if possible. I'd like to do this too.

Thanks

Chris Lucas

N919AR [quote][b]

Strasnuts

Joined: 10 Feb 2009
Posts: 502
Location: Salt Lake City, UT

Posted: Fri Jan 13, 2012 12:47 pm Post subject: Magnetometer Locations and seatbelt cable

Chris,  I did this.  Aircraft spruce can  make them up out of SS nonmagnetic.  I have structural SS bolts too and my  GMU 44 Garmin Magnetometer mountedin close proximity and no  problems.

  

 http://www.aircraftspruce.com/catalog/appages/cableassy.php

  

 Sean

 [quote]   ---

_________________
40936
RV-10 SB N801VR Flying
780 Hours
SuperSTOL 60 hours

toaster73(at)embarqmail.c
Guest

Posted: Fri Jan 13, 2012 1:07 pm Post subject: Magnetometer Locations and seatbelt cable

Ahh thanks Sean! I did put in an email to Spruce through their website about custom cables, waiting for a reply. I can see about a 5-10 degree swing in the mag heading on my GRT system with and without those cables running by. Did you get the bolts from Spruce too, I have some AN3's from Spruce but the magnet picks them up.



Thanks for the reply Carl, I am already commited to my location due to other features, I have the mags in the next bay behind the battery.  I used the right angle longeron to support the shelf and it also supports my AHRS which is over the battery. This helps keep XYZ on both units easily aligned.  On a GRT setup the mag and AHRS have to be separate.

-Chris



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rv10flyer

Joined: 25 Aug 2009
Posts: 364

Posted: Fri Jan 13, 2012 1:39 pm Post subject: Re: Magnetometer Locations and seatbelt cable

Highly recommend SS. The ferrous metals passed the hand-held compass test at 18". They showed up during the GRT mag calibration at the upper limit for interference. I will change out hdwr/cables later then recalibrate.

_________________
Wayne G.

Strasnuts

Joined: 10 Feb 2009
Posts: 502
Location: Salt Lake City, UT

Posted: Fri Jan 13, 2012 1:49 pm Post subject: Magnetometer Locations and seatbelt cable

I think these are what I bought, nuts and washers  SS too.....long time ago though.

  

 http://www.aircraftspruce.com/catalog/hapages/an3.php

  

  

  

  

 [quote]   ---

_________________
40936
RV-10 SB N801VR Flying
780 Hours
SuperSTOL 60 hours

robin(at)PaintTheWeb.com
Guest

Posted: Fri Jan 13, 2012 1:57 pm Post subject: Magnetometer Locations and seatbelt cable

We did the same thing.



Robin

Do Not Archive



From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Seano

Sent: Friday, January 13, 2012 12:44 PM

To: rv10-list(at)matronics.com

Subject: Re: RV10-List: Magnetometer Locations and seatbelt cable



Chris,  I did this.  Aircraft spruce can make them up out of SS nonmagnetic.  I have structural SS bolts too and my GMU 44 Garmin Magnetometer mountedin close proximity and no problems.



http://www.aircraftspruce.com/catalog/appages/cableassy.php



Sean

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sean(at)stephensville.com
Guest

Posted: Fri Jan 13, 2012 2:12 pm Post subject: Magnetometer Locations and seatbelt cable

Is the SS that is mentioned on that page non-magnetic or do you need to 

call to request it?



-Sean #40303



On 1/13/12 2:43 PM, Seano wrote:

[quote] Chris,  I did this.  Aircraft spruce can make them up out of SS 

 nonmagnetic.  I have structural SS bolts too and my GMU 44 Garmin 

 Magnetometer mountedin close proximity and no problems.

 http://www.aircraftspruce.com/catalog/appages/cableassy.php

 Sean



     ---

toaster73(at)embarqmail.c
Guest

Posted: Fri Jan 13, 2012 5:53 pm Post subject: Magnetometer Locations and seatbelt cable

Well this is interesting, here is my email to Spruce and then their reply:



......I was wondering if the custom cable assemblies, which are offered in galvanized or stainless steel, are available in a non-ferrous stainless steel with similar strength characteristics? I do not have all the dimensions ready yet but iI will need two cables, 5/32 DIA, about 4 ft long with 2 fork ends and 1/4 inch hole in the fork.

Thanks

 Chris Lucas



Chris



    Sorry but no, these cable are only made of the materials that are sold in the catalog, Galvanized or SS. If you decide to go with the items listed your price would be $54.86 for the gal, and $57.26 for ss

5/32 7x19 48 inches with ms20667 forks.

Regards

A/S



So with the above I am maybe assuming that the stainless Robin and Seano got is actually non-ferrous and the A/S rep is just not understanding my query or doesn't know if it is nonferrous or not. I know my Van's cable is ferrous and the fork ends are not.

I must ask did either of you actually put a magnet to it?



Sean,

 as for your question below there is no way to know unless they tell us they put a magnet to it and it did not stick. I guess I need to pursue my request further.  If its a 300 series SS it can become magnetized during cold work (making wire, rolling threads). The wire or whatever would need to be annealed afterward to make it non-ferrous.



Wayne,

I did a test tonight and my GRT mag swung 5 degrees from with the cable in place to without in place. It might correct out it might not, but I am trying for a near flat calibration.



I can't believe I am spending so much time on this...I guess I don't want to stop "building".



Chris

N919AR Flying



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robin(at)PaintTheWeb.com
Guest

Posted: Fri Jan 13, 2012 6:42 pm Post subject: Magnetometer Locations and seatbelt cable

Yup, sure did. Plus waved it around the Magnetometer a bunch like Gustavo Dudamel conducting the LA Philharmonic only with less hair.

I got to get off this computer.



Robin

Do Not Archive



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mauledriver(at)nc.rr.com
Guest

Posted: Fri Jan 13, 2012 7:02 pm Post subject: Magnetometer Locations and seatbelt cable

I was planning to do this but by the time I had built the shelf, it seemed like the cables might physically interfere with the units.

So I ended up replicating the front seat hard points for the rear seats. You can see what I did here...

http://www.mykitlog.com/users/display_log.php?user=MauleDriver&project=224&category=2155&log=91924&row=4

Bill



Sent from my iPad



On Jan 13, 2012, at 2:13 PM, Chris <toaster73(at)embarqmail.com (toaster73(at)embarqmail.com)> wrote:



[quote] body {height: 100%; color:#000000; font-size:12pt; font-family:Times New Roman;}

I was wondering if someone on this list mentioned they had made custom rear seat seatbelt anchor cables which were non-ferrous (stainless steel but non magnetic) so as to not interfere with the magnetometer mounted on a nearby shelf. If that someone is out there, please provide details if possible. I'd like to do this too.

Thanks

Chris Lucas

N919AR  	  Quote: 	
		  



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cs.com

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matronics.com/contribution

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[b]

rv10flyer(at)verizon.net
Guest

Posted: Fri Jan 13, 2012 7:18 pm Post subject: Magnetometer Locations and seatbelt cable

Ditto for me. I did it because I did not like the idea of a wire coming out  of the rear when I could have the seat belts connected directly above. like the  front was. 

 Pascal

    

  From: Bill Watson (mauledriver(at)nc.rr.com) 

 Sent: Friday, January 13, 2012 6:58 PM

 To: rv10-list(at)matronics.com (rv10-list(at)matronics.com) 

 Subject: Re: Magnetometer Locations and seatbelt  cable

  



  I was planning to do this but by the time I had built the shelf, it seemed  like the cables might physically interfere with the units.

  

 So I ended up replicating the front seat hard points for the rear seats.  You can see what I did here...

 http://www.mykitlog.com/users/display_log.php?user=MauleDriver&project=224&category=2155&log=91924&row=4

  

 Bill



Sent from my iPad

 

On Jan 13, 2012, at 2:13 PM, Chris <toaster73(at)embarqmail.com (toaster73(at)embarqmail.com)>  wrote:

 

 [quote]       body {height: 100%; color:#000000; font-size:12pt; font-family:times new roman;}    

I was wondering if someone on this list mentioned they had made custom rear    seat seatbelt anchor cables which were non-ferrous (stainless steel but non    magnetic) so as to not interfere with the magnetometer mounted on a nearby    shelf. If that someone is out there, please provide details if possible. I'd    like to do this too.

Thanks

Chris Lucas

N919AR 	  Quote: 	
		  



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cs.com

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matronics.com/contribution

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href="http://www.matronics.com/Navigator?RV10-List">http://www.matronics.com/Navigator?RV10-List

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[b]

n223rv(at)wolflakeairport
Guest

Posted: Fri Jan 13, 2012 8:10 pm Post subject: Magnetometer Locations and seatbelt cable

I had a buddy order the SS cables from AS&S for ~$120, when he received them they were the same as what came in the Vans kit.  Maybe he got the wrong ones?  Maybe not?? May want to make sure they are indeed non-Ferrous....  Might save you some aggravation and money....

Sent from my iPhone



On Jan 13, 2012, at 3:43 PM, "Seano" <sean(at)braunandco.com (sean(at)braunandco.com)> wrote:



[quote]   BODY { 	FONT-FAMILY: Times New Roman; HEIGHT: 100%; COLOR: #000000; FONT-SIZE: 12pt }     Chris,  I did this.  Aircraft spruce can  make them up out of SS nonmagnetic.  I have structural SS bolts too and my  GMU 44 Garmin Magnetometer mountedin close proximity and no  problems.

  

 http://www.aircraftspruce.com/catalog/appages/cableassy.php

  

 Sean

 [quote]   ---

Strasnuts

Joined: 10 Feb 2009
Posts: 502
Location: Salt Lake City, UT

Posted: Fri Jan 13, 2012 8:22 pm Post subject: Magnetometer Locations and seatbelt cable

Weird....When I bought mine I did the magnet test and the originals were 

magnetic and the new cables were not.??



I just ordered the same length in stainless.

---

_________________
40936
RV-10 SB N801VR Flying
780 Hours
SuperSTOL 60 hours

scottmschmidt(at)yahoo.co
Guest

Posted: Fri Jan 13, 2012 8:59 pm Post subject: Magnetometer Locations and seatbelt cable

I put the same cables in that Sean did.  I have the GRT AHRS on a shelf in the back with the Crossbow AHRS for the Chelton right next to it.  

The magnetometer for GRT in the wing.  I have had some issues with the Crossbow not booting up correctly from time to time and I just purchased the AHRS mount that Van's sells to relocate the GRT AHRS.  

From what I have read the GRT AHRS (with no magnetometer in it) is not effected by magnetic fields like the Crossbow with the magnetometer built in.  

I will let you know what I find. 

 

Scott Schmidtscottmschmidt(at)yahoo.com



[quote]        From: Pascal <rv10flyer(at)verizon.net>

 To: rv10-list(at)matronics.com 

 Sent: Friday, January 13, 2012 8:14 PM

 Subject: Re: Magnetometer Locations and seatbelt cable

  

 

     Ditto for me. I did it because I did not like the idea of a wire coming out  of the rear when I could have the seat belts connected directly above. like the  front was. 

 Pascal

    

  From: Bill Watson (mauledriver(at)nc.rr.com) 

 Sent: Friday, January 13, 2012 6:58 PM

 To: rv10-list(at)matronics.com (rv10-list(at)matronics.com) 

 Subject: Re: Magnetometer Locations and seatbelt  cable

  



  I was planning to do this but by the time I had built the shelf, it seemed  like the cables might physically interfere with the units.

  

 So I ended up replicating the front seat hard points for the rear seats.  You can see what I did here...

 http://www.mykitlog.com/users/display_log.php?user=MauleDriver&project=224&category=2155&log=91924&row=4

  

 Bill



Sent from my iPad

 

On Jan 13, 2012, at 2:13 PM, Chris <toaster73(at)embarqmail.com (toaster73(at)embarqmail.com)>  wrote:

   	  Quote: 	
		        #yiv1434535379 body {height:100%;color:#000000;font-size:12pt;font-family:times new roman;}    I was wondering if someone on this list mentioned they had made custom rear    seat seatbelt anchor cables which were non-ferrous (stainless steel but non    magnetic) so as to not interfere with the magnetometer mounted on a nearby    shelf. If that someone is out there, please provide details if possible. I'd    like to do this too.

Thanks

Chris Lucas

N919AR

 	  Quote: 	
		  


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matronics.com/contribution

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 [b]

bill.peyton

Joined: 19 Sep 2010
Posts: 198
Location: St. Louis, MO

Posted: Sat Jan 14, 2012 5:58 am Post subject: Re: Magnetometer Locations and seatbelt cable

I was at West Marine today and noticed they sell SS cable and will swedge the ends on for you.  It is listed on thier website as SS.  I am going to check it out next time I am in there and if it is non ferrous I am going to just have it made by them with my fittings.  

Bill

_________________
Bill
WA0SYV
Aviation Partners, LLC

kevino

Joined: 21 Sep 2010
Posts: 13
Location: United States

Posted: Sat Jan 14, 2012 6:31 am Post subject: Re: Magnetometer Locations and seatbelt cable

I ordered ss from spruce and yes they were still magnetic. However hasn't bothered my afs 4500's

pietflyr(at)bellsouth.net
Guest

Posted: Sat Jan 14, 2012 6:43 am Post subject: Magnetometer Locations and seatbelt cable

If it is Stainless Steel it is still ferrous (ferrous just means containing

iron).  It may be non-magnetic, but it is still ferrous.



Just to play it safe, take a magnet and test it.  Stainless Steel comes in

several different alloys, and not all are non-magnetic.  For example, most

stainless steel knives (including some tableware) are 400 series stainless,

which is highly magnetic.  Most stainless forks and spoons are 300 series,

which is non-magnetic (or maybe just slightly magnetic).



I just checked some stainless steel cable I got from Aircraft Spruce and it

is somewhat magnetic, but nowhere nearly as strong as galvanized cable.



Jack Phillips

# 40610 Wings

Raleigh, NC



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