Re: KR> Aileron hinge bolts and BID

[Paul-Visk via KRnet]

Tucker,
I'm planning on the two step possess as you described. Also instead of  
using 1 layer of 5.5 oz. glass. I'm using multiple layers of deck cloth so  I 
can get a tighter corners. 
 
Paul Visk
Belleville Il.
618 406 4705  
 
 
 
In a message dated 1/20/2017 3:38:58 P.M. Central Standard Time,  
krnet@list.krnet.org writes:

Hi  all,

On this note, I did the 8/32 pan head off-set; results to follow  the next
installation:

The next steps for the aileron attachment in  the plans call for Flox the
attachment nut,  

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Re: KR> Aileron hinge bolts and BID

[Jeff Scott via KRnet]

Just notch a step into the skin large enough for the false spar to sit in the 
skin, then scrub the foam out from between the layers about 1/4" deep.  Fill 
with Flox and slide the false spar into place.  Your call whether you want to 
add a layer of glass to it while the flox is wet or not.  I had the nutplates 
already floxed onto the inside of the false spars when I installed them.  When 
I glassed over them, I had a set of screws that I had dipped in floor wax to 
screw through the wet glass into the nut plates to keep the holes clear.  Once 
cured, they easily unscrewed.  No need for a vacuum bag. 

It hasn't been mentioned in a while, but there have been some failures of the 
aluminum L bracket that the Aileron counterweight mounts on.  Some folks have 
replaced theirs with 4130 L brackets.  I still have the aluminum brackets on my 
KR after 20 years and 1150 hrs, but if I was building them today, I would use 
4130 for the brackets.

-Jeff Scott
Los Alamos, NM
 

Hi all,

On this note, I did the 8/32 pan head off-set; results to follow the next
installation:

The next steps for the aileron attachment in the plans call for Flox the
attachment nut, add the counter weight arm (middle), then 1 layer BID
overlapping at least 1 inch.

I've been stewing about this for a few weeks. I have wings built with
Diehl skins raf48.

It seems to me that I should flox or epoxy the 1/4" spar to the wing and
to the aileron prior to BID. Did anyone do this?

Then apply BID to further secure the aileron. Do I need to use a vacuum
bag? Or can I use just gravity and hand placement (assuming I can square
the spar with clamps)?

Any feedback on process and results would be great!

Thanks,
Tucker

Denver, CO


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Re: KR> Aileron hinge bolts and BID

[Tucker Brown via KRnet]

Hi all,

On this note, I did the 8/32 pan head off-set; results to follow the next
installation:

The next steps for the aileron attachment in the plans call for Flox the
attachment nut, add the counter weight arm (middle), then 1 layer BID
overlapping at least 1 inch.

I've been stewing about this for a few weeks. I have wings built with
Diehl skins raf48.

It seems to me that I should flox or epoxy the 1/4" spar to the wing and
to the aileron prior to BID.  Did anyone do this?

Then apply BID to further secure the aileron.  Do I need to use a vacuum
bag?  Or can I use just gravity and hand placement (assuming I can square
the spar with clamps)?

Any feedback on process and results would be great!

Thanks,
Tucker

Denver, CO


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Re: KR> Aileron hinge bolts

[Jeff Scott via KRnet]

Unsanctioned by USAF?  Yes.  We only did that when the inspectors weren't 
looking. :o)  

For others, running a tap through the metal self locking nut plates does not 
destroy their self locking qualities.  They don't just bind as tight, so they 
don't destroy the threads on Stainless screws or bind the steel screws so tight 
that the heads strip.  But they do still bind well enough to meet the specs for 
a self locking nut.

-Jeff Scott

--
Subject: Re: KR> Aileron hinge bolts
Thanks for the advice guys. Jeff, I thought that was an unique Air Force  
unsanctioned trick that we used to do years ago. : )

Paul Visk Belleville Il.
618-406-4705

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Re: KR> Aileron hinge bolts

[Paul Visk via KRnet]

Thanks for the advice guys. Jeff, I thought that was an unique Air Force  
unsanctioned trick that we used to do years ago. : )

Paul Visk Belleville Il.
618-406-4705
 Original message From: Jeff Scott via KRnet 
 Date: 1/20/17  8:30 AM  (GMT-06:00) To: 
krnet@list.krnet.org Cc: Jeff Scott  Subject: Re: KR> 
Aileron hinge bolts 
Either method works just fine.  I chose to counterbore the hinges and used 
flush screws with the screws offset between the aileron and the wing.  
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Re: KR> Aileron hinge bolts

[Jeff Scott via KRnet]

Either method works just fine.  I chose to counterbore the hinges and used 
flush screws with the screws offset between the aileron and the wing.   Like 
Larry, I also floxed a set of #8 nut plates to the back of the mount holes to 
make them removable.  

One note on self locking nut plates like what are used in this application.  
The pinch on the end of the nut plates as manufactured is a bit too tight.  
Most savvy A will run a tap through the nut plate.  They will still be self 
locking in that the screws will not loosen up, but they won't destroy Stainless 
screws, and the nut plates won't twist out of the floxed mount if you ever have 
to remove the aileron.

-Jeff Scott
Los Alamos, NM

---
I'll be ordering my aileron hardware from Wicks soon. In looking in the book at 
10.59. It says to use 8/32 pan head bolts for the aileron hinge. Has anyone had 
problems with sufficient clearance between the heads of the bolts if they're 
lined up with each other?  Or should they be offset. I believe I've seen some 
people use countersunk bolts. Any advice would be appreciated. 


Paul Visk Belleville Il.
618-406-4705

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Re: KR> Aileron hinge bolts

[Larry Flesner via KRnet]

At 10:41 PM 1/19/2017, you wrote:

I believe I've seen some people use countersunk bolts.

+

That's what I used 20 years ago and it is still flying.  It 
eliminates any interference even if they are head to head.


I floxed blind nuts to the back side of the spars so I can remove the 
hinge if necessary.


Larry Flesner 



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Re: KR> Aileron hinge bolts

[Mike Sylvester via KRnet]

offset will work just fine. That's one of the many judgement calls that plans 
leave out.


Mike Sylvester
kr2s builder
Birmingham,AL.

Cell no.205-966-3854



From: KRnet  on behalf of Paul Visk via KRnet 

Sent: Thursday, January 19, 2017 10:41 PM
To: KR EMAIL BOARD
Cc: Paul Visk
Subject: KR> Aileron hinge bolts

I'll be ordering my aileron hardware from Wicks soon. In looking in the book at 
10.59. It says to use 8/32 pan head bolts for the aileron hinge. Has anyone had 
problems with sufficient clearance between the heads of the bolts if they're 
lined up with each other?  Or should they be offset. I believe I've seen some 
people use countersunk bolts. Any advice would be appreciated.


Paul Visk Belleville Il.
618-406-4705
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KR> KR-2 plans and drawings

[A E via KRnet]

Looking for a set due to my recent acquisition of a partial aircraft.
Anyone no longer need theirs?



Sent from my iPhone

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