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Mounting GRT Magnetometer - aluminum rivets

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MauleDriver(at)nc.rr.com
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Posted: Sun Nov 30, 2008 8:47 am Post subject: Mounting GRT Magnetometer - aluminum rivets

I'm mounting my 2 GRT Magnetometers on a shelf behind the battery compartment.  I'd like to use a few pull rivets on the shelf.

 

 Should I avoid use of  LP4-3 or similar rivets due to the ferrous shank?  These are aluminum rivets but they do have a small steel shank.  Are there any all aluminum or perhaps aluminum/stainless pull rivets?  Thoughts?

 

 My fall back is brass or stainless screws.

 

 Thanks

 Bill Watson

 

  	  Quote: 	
		  [b][i]"Ben Westfall" <rv10(at)sinkrate.com>[/i][/b] 	
                        Mounting GRT AHRS & Magnetometer                         Date:        Oct 09, 2008          [quote]I can't say how well it works but I'll show pictures. I fabricated a lightweight shelf using .040" aluminum to attach to the bulkhead behind the baggage wall. I attached it with aluminum pull rivets and used nylon lock nuts and bolts. The only concern I have is the weight   on the bulkhead and possible vibration while in flight. The magnetometer   and shelf together are very light so it shouldn't be an issue. I suppose I could fabricate a bracket to support the bulkhead to the skin above but I haven't done that and I don't really think it's going to be necessary. The seat belt cables are not ferrous metal. They don't attract a magnet so   they shouldn't influence the magnetometer at all.  Here's a thread on AFS's forum with some more information including a shot of Rob's dual install which he says has worked w/o incident.[b]

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Lew Gallagher

Joined: 04 Jan 2008
Posts: 402
Location: Greenville , SC

Posted: Sun Nov 30, 2008 9:03 am Post subject: Re: Mounting GRT Magnetometer - aluminum rivets

Hey Bill,



We ran short on countersunk pop rivets for the floor and just went to a local fastener shop to get some more.  We got some with steel shank and some with aluminum shank.  I'm sure you can find them easily -- if not, we didn't use many of the aluminum shank and I can send you some if you like.



Later, - Lew

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MauleDriver(at)nc.rr.com
Guest

Posted: Sun Nov 30, 2008 9:11 am Post subject: Mounting GRT Magnetometer - aluminum rivets

OK, I'm going to answer my own question... it just dawned on me that the screws and metal hardware in the 9 pin plug used on the Magnetometer are ferrous.  I don't think that the steel component of pull rivets is greater than one of the screws.  So, I'm just going to go ahead and mount the darn thing.

 

 Sometimes getting the question on the list is just what I need to find an answer.

 

 Bill

 

 

 MauleDriver wrote: [quote]I'm mounting my 2 GRT Magnetometers on a shelf behind the battery compartment.  I'd like to use a few pull rivets on the shelf.

   

 Should I avoid use of  LP4-3 or similar rivets due to the ferrous shank?  These are aluminum rivets but they do have a small steel shank.  Are there any all aluminum or perhaps aluminum/stainless pull rivets?  Thoughts?

   

 My fall back is brass or stainless screws.

   

 Thanks

 Bill Watson

   

    	  Quote: 	
		  [b][i]"Ben Westfall" <rv10(at)sinkrate.com>[/i][/b] 	
                         

                  Mounting GRT AHRS & Magnetometer                                       Date:          Oct 09, 2008                   	  Quote: 	
		  I can't say how well it works but I'll show pictures. I fabricated a lightweight shelf using .040" aluminum to attach to the bulkhead behind the baggage wall. I attached it with aluminum pull rivets and used nylon lock nuts and bolts. The only concern I have is the weight on the bulkhead and possible vibration while in flight. The magnetometer and shelf together are very light so it shouldn't be an issue. I suppose I could fabricate a bracket to support the bulkhead to the skin above but I haven't done that and I don't really think it's going to be necessary. The seat belt cables are not ferrous metal. They don't attract a magnet so they shouldn't influence the magnetometer at all.  Here's a thread on AFS's forum with some more information including a shot of Rob's dual install which he says has worked w/o incident.



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