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wing locker doors

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dredmoody(at)cox.net
Guest

Posted: Tue Feb 13, 2007 9:23 am Post subject: wing locker doors

It only adds .5 gram of extra ink weight to write it on your checklist. If you already have a glass panel unit, you can add check wing locker doors without any added weight.



Dred



---- C Smith <pilot4profit(at)sbcglobal.net> wrote: 

 	  Quote: 	
		   Better yet, a loud obnoxious game show quality buzzer type anunciator!

 CS

 do not archive

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ashontz

Joined: 27 Dec 2006
Posts: 723

Posted: Tue Feb 13, 2007 12:26 pm Post subject: Re: wing locker doors

I think I'd make the door spring loaded somehow so that it stays closed even if someone forgets to latch it.

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dredmoody(at)cox.net
Guest

Posted: Tue Feb 13, 2007 1:32 pm Post subject: wing locker doors

If you're going to spring load the locker doors, wouldn't it be a better idea to spring load them OPEN? That way, they are not flopping in your way when you are loading or unloading them, and the best part is that it is painfully obvious if you have forgotten to latch them. I mean, if you start up and taxi out with the doors sprung wide open, you are probbaly not a good choice for the left seat.



Dred



---- ashontz <ashontz(at)nbme.org> wrote: 

 	  Quote: 	
		   

 

 I think I'd make the door spring loaded somehow so that it stays closed even if someone forgets to latch it.

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brothapig(at)HOTMAIL.COM
Guest

Posted: Tue Feb 13, 2007 2:19 pm Post subject: wing locker doors

The only problem with that is, IF the latch should somehow fail in flight, you WILL have a working spoiler, and I doubt one could recover and land safely from that.

What about a dual action spring hinge, one that pulls the door closed when it is more that halfway closed, and pushes the door open when it is more than halfway open?  I don't know what you call these, but the same principle is at work on most automobile fuel doors.  Just a thought.

Ryan

----------------------------------------

 	  Quote: 	
		   Date: Tue, 13 Feb 2007 16:31:44 -0500

 From: dredmoody(at)cox.net

 To: zenith-list(at)matronics.com

 Subject: Re: Re: wing locker doors

 If you're going to spring load the locker doors, wouldn't it be a better idea to spring load them OPEN? That way, they are not flopping in your way when you are loading or unloading them, and the best part is that it is painfully obvious if you have forgotten to latch them. I mean, if you start up and taxi out with the doors sprung wide open, you are probbaly not a good choice for the left seat.

 Dred

 ---- ashontz  wrote: 

 > 

 > 

 > I think I'd make the door spring loaded somehow so that it stays closed even if someone forgets to latch it.

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ashontz

Joined: 27 Dec 2006
Posts: 723

Posted: Tue Feb 13, 2007 3:16 pm Post subject: Re: wing locker doors

 	  brothapig(at)HOTMAIL.COM wrote: 	
		  The only problem with that is, IF the latch should somehow fail in flight, you WILL have a working spoiler, and I doubt one could recover and land safely from that.

What about a dual action spring hinge, one that pulls the door closed when it is more that halfway closed, and pushes the door open when it is more than halfway open?  I don't know what you call these, but the same principle is at work on most automobile fuel doors.  Just a thought.

Ryan

I thought of that but there's no good way to do it being that you need the spring to travel through the pivot of the hinge, offset of course. You'd have to have the door hinge offset and mounted about and inch or so below the wing skin. That or use one of those cabinet hinges that's has two hinges and works like a parallelogram and springs into position in both directions. I'd still be wary of it possibly snapping to the up position of the latch wasn't secure in flight and then having the thing stuck in the up position anyway. You'd need a wing tunnel to test the loads etc that it would take to snap the door up against the spring loading. Seems safer to just have it spring loaded down for double safety. You could also put a second latch on it like a car hood, pop the latch, then reach under and pop another latch to fully open it.

----------------------------------------

 	  Quote: 	
		   Date: Tue, 13 Feb 2007 16:31:44 -0500

 From: dredmoody(at)cox.net

 To: zenith-list(at)matronics.com

 Subject: Re: Re: wing locker doors

 If you're going to spring load the locker doors, wouldn't it be a better idea to spring load them OPEN? That way, they are not flopping in your way when you are loading or unloading them, and the best part is that it is painfully obvious if you have forgotten to latch them. I mean, if you start up and taxi out with the doors sprung wide open, you are probbaly not a good choice for the left seat.

 Dred

 ---- ashontz  wrote: 

 > 

 > 

 > I think I'd make the door spring loaded somehow so that it stays closed even if someone forgets to latch it.

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dredmoody(at)cox.net
Guest

Posted: Tue Feb 13, 2007 3:50 pm Post subject: wing locker doors

There is not a single latch to fail on the wing locker doors is there? There are multiple D-Zus fasteners or Cam-Locs or whatever. Is there really a chance of such a multiple failure inflight?



Still the best route is a complete checklist and a dependable routine.



Dred



---- Ryan Vechinski <brothapig(at)HOTMAIL.COM> wrote: 

 	  Quote: 	
		   

 

 

 The only problem with that is, IF the latch should somehow fail in flight, you WILL have a working spoiler, and I doubt one could recover and land safely from that.

 

 What about a dual action spring hinge, one that pulls the door closed when it is more that halfway closed, and pushes the door open when it is more than halfway open?  I don't know what you call these, but the same principle is at work on most automobile fuel doors.  Just a thought.

 

 Ryan

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Tim Juhl

Joined: 21 Mar 2006
Posts: 488
Location: "Thumb" of Michigan

Posted: Tue Feb 13, 2007 4:17 pm Post subject: Re: wing locker doors

RE:  Dzus fasteners - years ago I used to copilot a B25 around to airshows.  The cowling sections and various access panels were held on by dzus fasteners.  After several decades of shaking some of them were worn and it was not unusual to be flying with a few missing (we carried a bag of spares).  It was never a problem as the remaining fasteners would hold it on.   The six dzus fasteners on the baggage door are more than enough, even if you forget to tighten a couple. 



Tim

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ashontz

Joined: 27 Dec 2006
Posts: 723

Posted: Tue Feb 13, 2007 6:22 pm Post subject: Re: wing locker doors

If I go with wing lockers I'll have the multiple fasteners and the spring action close, and the double latch. I don't want any unintended flight surfaces (spoilers) sticking up. Everyone else is welcome to do whatever they're comfortable with. That's what I'd be comfortable with.

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