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Wing Locker

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Tim Juhl

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

Posted: Tue Oct 24, 2006 9:23 am Post subject: Wing Locker

Guys,

I'm at the point where I'm preparing to install a wing locker in the right wing.   The info in the drawing is a little sparse and of course there is no pictorial guide.   



I'd appreciate any advice from others who have done the install but in particular I would like to know about the dzus fasteners.  Here is my question.  It looks to me like the springs are meant to be held in place by A4 rivets.  Did you dimple the 0.025 dzus strip and countersink the rivets?  Also, since the dzus fasteners look like they'll just be flopping loose in their holes did you come up with any way of securing them?



Thanks!

Tim Juhl

_________________
______________
CFII
Champ L16A flying
Zodiac XL - Jabiru 3300A
Almost done! It'll fly in spring!

david_a_g_johnson(at)btin
Guest

Posted: Tue Oct 24, 2006 9:52 am Post subject: Wing Locker

The Dzus's can be held in with 'snap rings' that are like circlips that fit 

in the groove in the fastner.



ACS do them in several sizes, Part Nos. are SR3SS to SR7SS.



I can't remember what size the ones for the wing lockers are.



Dave Johnson



---

Michael Valentine

Joined: 09 Jan 2006
Posts: 108

Posted: Tue Oct 24, 2006 9:57 am Post subject: Wing Locker

I just did this last week.  I dimpled and then countersunk the rivets as much as possible.  I know the material is too thin to do a proper countersink job, but I figured that with the angle of the dimpling I was not taking too much material.  BUT, I then filed the back side of the dimple down a fair bit so that it was smooth - though not flush in back.  End result was a very close to flush rivet (using the flat head, of course). 



In terms of the pieces, I have just left them hanging for now.  I made the holes small so only a couple want to fall out on their own.  All I can say is that Dzus fasteners are an extremely crappy solution to securing the lid!  I would redo it in a heartbeat if someone had a better fastening system.  They are a real pain to release (some worse than others depending on alignment) and they certainly don't make the lockers a convenient storage place. 



Also, another local builder - George May - used 10 (3 on sides and four in back) instead of the recommended 6 and his locker lid holds down much better than mine. 6 definitely doesn't cut it if you want the lid to stay down along the edges. 



Two suggestions:  first, be careful on the fasteners in the corners that you don't drill your large hole too close to the edge!  One of my edge springs was partially blocked by the back panel/L angle on rib and I had to move it forward; second (also from George May), you might want to make an inspection hole in the back panel for wires/tubes/cables/vacuums/etc. 



Michael in NH



On 10/24/06, Tim Juhl <juhl(at)avci.net (juhl(at)avci.net)> wrote:[quote] --> Zenith-List message posted by: "Tim Juhl" <juhl(at)avci.net (juhl(at)avci.net)>



Guys,

I'm at the point where I'm preparing to install a wing locker in the right wing.   The info in the drawing is a little sparse and of course there is no pictorial guide. 



I'd appreciate any advice from others who have done the install but in particular I would like to know about the dzus fasteners.  Here is my question.  It looks to me like the springs are meant to be held in place by A4 rivets.  Did you dimple the  0.025 dzus strip and countersink the rivets?  Also, since the dzus fasteners look like they'll just be flopping loose in their holes did you come up with any way of securing them?



Thanks!

Tim Juhl



-------- 

DO NOT ARCHIVE

______________

CFII

Champ L16A flying

Zodiac XL - Working on wings





Read this topic online here:



http://forums.matronics.com/viewtopic.php?p=69925#69925  [quote][b]

p.mulwitz(at)worldnet.att
Guest

Posted: Tue Oct 24, 2006 10:11 am Post subject: Wing Locker

Hi Tim,



I chose to use the same technique to attach the springs as used on 

nut plates.  This means counter-sinking the metal strip and using 

small (soft) solid rivets to hold the springs in place.  I felt soft 

rivets were justified since they don't take any load but just hold 

the spring in place when the baggage door is opened.



The Dzus "Screws" have matching spring clips that hold them in 

place.  You can get them from Aircraft Spruce.



Good luck,



Paul

XL fuselage



At 10:23 AM 10/24/2006, you wrote:

 	  Quote: 	
		  



Guys,

I'm at the point where I'm preparing to install a wing locker in the 

right wing.   The info in the drawing is a little sparse and of 

course there is no pictorial guide.



I'd appreciate any advice from others who have done the install but 

in particular I would like to know about the dzus fasteners.  Here 

is my question.  It looks to me like the springs are meant to be 

held in place by A4 rivets.  Did you dimple the 0.025 dzus strip and 

countersink the rivets?  Also, since the dzus fasteners look like 

they'll just be flopping loose in their holes did you come up with 

any way of securing them?



Thanks!

Tim Juhl



---

agbeyer(at)sbcglobal.net
Guest

Posted: Tue Oct 24, 2006 11:02 am Post subject: Wing Locker

Tim,

 

  

I don't know what the plans call for now, but some food for thought. I have an HDS w/wing lockers.  At the time I did mine there was one "L" angle called for in the middle of the door.  I had to add three more.  One on each side and one at the back because the door would lift a lot in flight.  I talked to a guy with an HD and he has one angle in the middle with no lift.  I made my holes a little larger than standard for the Dzus fastener for easyer alighnment.  In doing so the Dzus springs would slip through the holes.  In place of the springs I used "O" rings and they work great. You will love the extra space the wing lockers give you.  I flew to SnF this year with the lockers and the plane full of stuff.  If you would like some pictures let me know. 

  

Al from Oshkosh 

 ---

grs-pms(at)comcast.net
Guest

Posted: Tue Oct 24, 2006 11:31 am Post subject: Wing Locker

In my experience Camlock fasteners are an  improvement on Dzus fasteners. They are a bit more complicated and more  expensive.  That said, I have stuck with Dzus fasteners on my not-yet  completed 601HD.

  

 George

  

 do not archive

  

 [quote]   ---

larry(at)macsmachine.com
Guest

Posted: Tue Oct 24, 2006 11:32 am Post subject: Wing Locker

Tim,

The springs can be installed on A4 rivets.  The holes for the rivets 

should be dimpled and the A4s pulled with the flat ended anvil.

Dzus fasteners are most conveniently held in place by a plastic washer 

that is pushed over the end to the recess under the head. This traps the 

Dzus on the sheet metal in a way that is reversible when it's time to 

replace a part or paint.

http://www.macsmachine.com/images/cowling/full/Dzustools.gif

http://www.macsmachine.com/images/cowling/full/Dzusdimples.gif

http://www.macsmachine.com/images/cowling/full/Dzusspring.gif

Getting the right size Dzus and spring for the thickness is sometimes 

the hardest part.

It's a good idea to dimple radius the hole that the Dzus goes through as 

well.  Study the dimples and tools I used and prepare

a sample Dzus installation before you start modifying the actual parts.  

When you're comfortable with the sample, then go ahead.

Springs can be rebent to achieve the grip needed so long as you don't 

change the hole to hole distance.

I used Dzus fasteners on the cowl, luggage compartment, and battery 

charging access cover.



Good luck,



Larry McFarland - 601HDS at www.macsmachine.com



Tim Juhl wrote:



 	  Quote: 	
		  



Guys,

I'm at the point where I'm preparing to install a wing locker in the right wing.   The info in the drawing is a little sparse and of course there is no pictorial guide.   



I'd appreciate any advice from others who have done the install but in particular I would like to know about the dzus fasteners.  Here is my question.  It looks to me like the springs are meant to be held in place by A4 rivets.  Did you dimple the 0.025 dzus strip and countersink the rivets?  Also, since the dzus fasteners look like they'll just be flopping loose in their holes did you come up with any way of securing them?



Thanks!

Tim Juhl



--------

DO NOT ARCHIVE

______________

CFII

Champ L16A flying

Zodiac XL - Working on wings

Trainnut01(at)aol.com
Guest

Posted: Tue Oct 24, 2006 1:46 pm Post subject: Wing Locker

Michael

 I used Camlock fasteners on mine. I had to make new doors but the original  fasteners were, as you say, "crappy." The Camlocks look good and work  wonderfully. They have a retaining ring that keeps them in place when the locker  is open also. Got them from ACS.

 Carroll Jernigan

  [quote][b]

ernieth(at)gmail.com
Guest

Posted: Wed Oct 25, 2006 4:43 am Post subject: Wing Locker

Carroll,



When I look at the Camlocks, there is 2600,2700,and 4200 series. The selection table -1 or -2 should be used. I am a long way from needing this things but since the discussion is going on now. What type did you use? 



Thanks Ernie



On 10/24/06, Trainnut01(at)aol.com (Trainnut01(at)aol.com) <Trainnut01(at)aol.com  (Trainnut01(at)aol.com)> wrote:[quote]     Michael

 I used Camlock fasteners on mine. I had to make new doors but the original  fasteners were, as you say, "crappy." The Camlocks look good and work  wonderfully. They have a retaining ring that keeps them in place when the locker  is open also. Got them from ACS.

 Carroll Jernigan

  [quote][b]  http://www.matronics.com/Navigator?Zenith-List http://forums.matronics.com http://wiki.matronics.com [b]

Trainnut01(at)aol.com
Guest

Posted: Wed Oct 25, 2006 5:29 am Post subject: Wing Locker

Ernie,

 I will be at the hangar this afternoon and I will look at my invoices  and post those part numbers as soon as I get there.

 Carroll Jernigan

  

  [quote][b]

Trainnut01(at)aol.com
Guest

Posted: Wed Oct 25, 2006 7:32 am Post subject: Wing Locker

Ernie and Michael

 I used the 2700-2 studs, 212-12ND receptacles and 2600-LW retainer washers.  I dimpled the rivet holes. The underside of the dimples fit nicely into the  countersinks in the receptacles and gives a good, tight fit against the bottom  of the mounting strip. I used 6 on each door, 4 across the back and one midway  on each side. These can be installed without any special tools but if you use  the Camloc drill jig it is really easy. The drill jig also gives a near perfect  alignment of the holes. I thought it was worth the 28 bucks but it certainly can  be done without the jig. Oh, the part number for the jig is 01-00155.

 I originally used the Dzus fasteners but the fit and finish was so bad I  replaced the strips around the top of the lockers and the locker door skin on  the first one I built. I kept the hanger locked and did not allow anyone inside  until after I replaced them. Didn't think I could handle the ridicule if any of  the other builders saw that mess.

 Carroll Jernigan

  [quote][b]

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