KR> Aileron Hinges

[Flesner]

>. You're supposed to use stop nuts on the back of the spar but good 
>luck keeping resin out of them.
++

Purchase a hand full of nylon bolts the size of the anchor nuts (#8 
or #10) and thread them into the anchor nuts to keep there resin 
out.  When cured, remove the nylon bolts.  I used that process in 
several places while building. If using wax, I'd try heating the wax 
a bit to soften but not so hot as to soften the resin on the back 
side.  Run the reamer through the warm wax to remove.  If you break 
one of the nylon bolt it should be easy to drill out with an undersized bit.

As always, your results may vary..

Larry Flesner 

KR> Anchor Nuts for Aileron Hinges

[Sid Wood]

Matt,
I used a rubber insert on the anchor stop nuts to keep the resin out of the 
threads.  These do an excellent job.  The same insert holds the stop nut in 
place while the resin cures.  After the resin cures, pull the insert out for 
a clean installation.  Theoretically you throw away the rubber inserts after 
one use.  The anchor nuts are purchased with the inserts already in place. 
(They are pricey.)  The inserts are quite durable and reusable many times. 
I have re-used the inserts on standard anchor nuts from AC Spruce fifty 
times at least.  The inserts I have are for 10-32 anchor nuts.  I got them 
from the trash can at Abaris Training.  These can be seen at
http://www.clickbond.com/modules.php?name=Products2=category_view=9

On all my anchor nut installations on spruce and plywood, I drill a hole at 
each rivet hole into the wood at the anchor ear.  I insert a rivet into the 
hole along with the epoxy resin.  The resin keeps the rivets in place and 
the rivets keeps the anchor nut from spinning when the screw or bolt is 
torqued.

Sid Wood
Tri-gear KR-2 N6242
Mechanicsville, MD, USA

Hello Matt,
 I used a 1-1/16" wide 6' hinge p/n MS20257p2-6 Aircraft Spruce has
them. You're supposed to use stop nuts on the back of the spar but good
luck keeping resin out of them.
 Larry Bell

On Sat, Jan 2, 2016 at 6:07 AM, Matt Quimby via KRnet 
wrote:

> Hello all, I?ve got two questions. First, what size piano hinge is used
> for the ailerons? Second, how are they attached to the false spars? I?m
> looking at countersunk bolts into captive nuts flexed onto the back of the
> spars, but my 1979 version of the plans doesn?t say anything on the
> subject. How did some of you who have finished your projects attach these?
>
> -Matt Quimby
> kr2pilot.blogspot.com
> ___

KR> Aileron spar

[Chris Kinnaman]

Haven't got there yet but I like this solution from the PIK-26, an angle 
bolted to the aft spar & piano hinge riveted or bolted to that:

Chris
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KR> Aileron Hinges

[Dan Heath]

You can rivet the anchor nuts to the back of the spar.



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-Original Message-



You're supposed to use stop nuts on the back of the spar but good luck keeping 
resin out of them.

KR> Aileron spar

[Dan Prichard]

I had a few nuts get blocked with resin and flox after attaching the aileron 
spar to the wing. After the resin set I used a 3/32" drill bit to cut through 
the bulk of the overfill then used a tap to clean out the threads. Minimal 
amount of effort. 

Dan Prichard 
Portland Oregon 

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Sent from my iPhone

KR> Aileron Hinges

[Oscar Zuniga]

As far as keeping resin out of locknut or nutplate threads while you're 
glassing, you can stand them up in a row on some waxed paper and melt canning 
paraffin or candle wax into the threaded parts before you install them.  Resin 
will not stick to wax.  After they are in place and the resin is hard you can 
auger the wax out with a dental pick or just screw the fastener in and it will 
push the wax out the back, if the back is open.
Be careful with wax though.  The thing that makes it so good for keeping resin 
out, will also doom you from ever getting good adhesion when you are trying to 
get a good solid resin joint or glassing over something.
Oscar ZunigaMedford, OR

KR> Aileron Hinges

[Matt Quimby]

Hello all, I?ve got two questions. First, what size piano hinge is used for the 
ailerons? Second, how are they attached to the false spars? I?m looking at 
countersunk bolts into captive nuts flexed onto the back of the spars, but my 
1979 version of the plans doesn?t say anything on the subject. How did some of 
you who have finished your projects attach these?

-Matt Quimby
kr2pilot.blogspot.com

KR> Aileron Hinges

[Lawrence Bell]

Hello Matt,
 I used a 1-1/16" wide 6' hinge p/n MS20257p2-6 Aircraft Spruce has
them. You're supposed to use stop nuts on the back of the spar but good
luck keeping resin out of them.
 Larry Bell

On Sat, Jan 2, 2016 at 6:07 AM, Matt Quimby via KRnet 
wrote:

> Hello all, I?ve got two questions. First, what size piano hinge is used
> for the ailerons? Second, how are they attached to the false spars? I?m
> looking at countersunk bolts into captive nuts flexed onto the back of the
> spars, but my 1979 version of the plans doesn?t say anything on the
> subject. How did some of you who have finished your projects attach these?
>
> -Matt Quimby
> kr2pilot.blogspot.com
> ___
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