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  #1  
Old 09-03-2013, 07:41 AM
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tkatc tkatc is offline
 
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Default How would you safety wire this?

Obviously I don't want this to back itself out. How would you safety wire this?

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  #2  
Old 09-03-2013, 07:46 AM
crabandy crabandy is offline
 
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Isn't that a NPT threaded socket for the fuel sumps?
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  #3  
Old 09-03-2013, 07:46 AM
Jaknjoan Jaknjoan is offline
 
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Default Pipe thread

Quote:
Originally Posted by tkatc View Post
Obviously I don't want this to back itself out. How would you safety wire this?

All you need to do is snug up pipe thread. That will never fibrate loose during your lifetime. Quick drains into the tank are never secured other than tightened to the point the fitting doesn't leak'
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  #4  
Old 09-03-2013, 08:48 AM
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Greg Arehart Greg Arehart is offline
 
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If necessary, you could drill a small hole in the collar angled up and to the right (or left) in your photo for the safety wire. Just don't drill into the tank.

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  #5  
Old 09-03-2013, 03:16 PM
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It took me a while to get comfortable with flare fitting B Nuts and pipe thread fittings not getting safety wire, but they don't. Just make sure they're torqued correctly and then, if you like, put a dot of torque seal in the appropriate spot to have a quick visual confirmation that they've been torqued and they aren't rotating. The only exception I know of is for the flare fitting B nuts in the fuel tanks getting a safety device as per Vans Service Bulletin. I think it was the result of someone simply forgetting to torque it properly...
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  #6  
Old 09-03-2013, 03:33 PM
noelf noelf is offline
 
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I guess there is a valid reason for what I think I'm seeing...but it look like there is a threadad plug in place of the expected fuel tank sump drain fitting.

Is this what I am seeing? Do you not intend to sump the tanks prior to each flight?
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  #7  
Old 09-03-2013, 03:38 PM
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rocketbob rocketbob is offline
 
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Safetying NPT plugs is one of those things in aviation I never understood the point of doing. Because if the plug is loose enough to rotate before it ever does its going to be leaking all over the place. I would tighten it and forget about safety wiring.
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  #8  
Old 09-03-2013, 04:01 PM
Bavafa Bavafa is offline
 
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Quote:
Originally Posted by noelf View Post
I guess there is a valid reason for what I think I'm seeing...but it look like there is a threadad plug in place of the expected fuel tank sump drain fitting.

Is this what I am seeing? Do you not intend to sump the tanks prior to each flight?
I am with you and wondering why plugging this port unless he is intending of not putting fuel in this tank, ever?
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  #9  
Old 09-03-2013, 04:24 PM
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Pipe threads........permatex#2 and tighten = all good

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  #10  
Old 09-03-2013, 05:01 PM
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tony, i can see why you havent responded to your post.
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