Today's Message Index:
----------------------
1. 07:12 AM - Aileron balance install (Tim Juhl)
2. 07:33 AM - Re: Aileron balance install (Paul Mulwitz)
3. 12:55 PM - Rivet Removal (Stephen R. Look)
4. 01:03 PM - Re: Aileron balance install (Mark Hubelbank)
5. 04:59 PM - Re: Aileron balance install (Afterfxllc@aol.com)
6. 08:36 PM - Re: Aileron balance install (Ron Lendon)
Message 1
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| Subject: | Aileron balance install |
I'm getting ready to install the aileron balance in my right aileron. Looking at
the LAA drawings provided by Zenith for the upgrade I see that they set the
ribs that support the square tube used as a balance arm parallel to the other
ribs in the aileron. This would result in the tube not being at a right angle
to the rear spar. In my view, this would result in requiring a wider hole in
the spar to accommodate the lateral movement of the tube when the aileron is
deflected. I also believe there was an earlier discussion of the need to bend
the tube inwards to clear the wingtip rivet line.
I wonder how others have dealt with this issue. I'm consideringL
1.) installing the ribs supporting the tube so as to place the tube at a right
angle to the spar, &
2.) Moving the tube inwards slightly to assure clearance from structures in the
wing.
I'd appreciate your comments before I start cutting :)
Tim Juhl
--------
______________
CFII
Champ L16A flying
Zodiac XL - Jabiru 3300A
Tearing wings apart for modification
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=301668#301668
Message 2
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| Subject: | Aileron balance install |
Hi Tim,
On mine, I installed the balance rod perpendicular to the MAIN spar. That
means an angle (not perpendicular) to the rear spar and aileron hinge. I
don't know what all the issues are for this problem. One seems to be how
the weights move between the rear rib and wing tip as well as the two wing
skins.
Good luck,
Paul
XL - slowly installing upgrade - currently fighting removing large spar
rivets.
-----Original Message-----
From: owner-zenith601-list-server@matronics.com
[mailto:owner-zenith601-list-server@matronics.com] On Behalf Of Tim Juhl
Sent: Friday, June 18, 2010 7:12 AM
Subject: Zenith601-List: Aileron balance install
I'm getting ready to install the aileron balance in my right aileron.
Looking at the LAA drawings provided by Zenith for the upgrade I see that
they set the ribs that support the square tube used as a balance arm
parallel to the other ribs in the aileron. This would result in the tube
not being at a right angle to the rear spar. In my view, this would result
in requiring a wider hole in the spar to accommodate the lateral movement of
the tube when the aileron is deflected. I also believe there was an earlier
discussion of the need to bend the tube inwards to clear the wingtip rivet
line.
I wonder how others have dealt with this issue. I'm consideringL
1.) installing the ribs supporting the tube so as to place the tube at a
right angle to the spar, &
2.) Moving the tube inwards slightly to assure clearance from structures in
the wing.
I'd appreciate your comments before I start cutting :)
Tim Juhl
--------
______________
CFII
Champ L16A flying
Zodiac XL - Jabiru 3300A
Tearing wings apart for modification
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=301668#301668
Message 3
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My two cents on removing solid spar rivets:
I'm drilling the heads with a #20 drill down to about even with the
sheet metal and then using a Stanley wood chisel to remove the head.
Three or four hits with my little hammer and the head goes flying.
Barely even scuffs the surface of the sheet metal.
When I'm all done the chisel won't be worth much, but it was pretty cheap.
Getting the rest of the rivet out I use a small pin punch and whack
it a few times.
Steve
Steve Look
Monticello, IL
www.ilrt66.com
"Dogs have owners, Cats have staff"
Message 4
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| Subject: | Re: Aileron balance install |
Tim,
I did two things. First I did not keep the arms parallel to the
ribs. I shifted them just enough so they would be far enough away from
the other structures so no interference was possible (including the
metal plates). I allowed about 1 inch from the end of the tube to any
other part.
Secondly, I filled about 7 inches of the end of the square tube
with lead. It melts at about 600-700F and alumimum is melts at around
1200F so as long as one keeps the lead at just above the melting point
it works. I stuffed and tamped aluminim foil into the tube to act as a
plug to define the area to be filled. A heat gun was used to pre-heat
the tube a bit so the lead would flow all the way to the plug. The lead
was melted using a 1500W hot plate with the lead in a metal coffee can
and with a larger metal can inverted over that to keep the heat in. It
took about 40 minutes to get the lead all melted. You will need about
1.5 pounds of lead for each side. I started with 5 pounds total and that
made it easy to pour.
Doing this I only needed two steel plates to balance. This allowed
one to use the specified holes by turning the aileron vertical to insert
the tube in the hole with the balance plates on. This way the aileron
can be removed in the future.
On 06/18/2010 10:11 AM, Tim Juhl wrote:
> --> Zenith601-List message posted by: "Tim Juhl"<juhl@avci.net>
>
> I'm getting ready to install the aileron balance in my right aileron. Looking
at the LAA drawings provided by Zenith for the upgrade I see that they set the
ribs that support the square tube used as a balance arm parallel to the other
ribs in the aileron. This would result in the tube not being at a right angle
to the rear spar. In my view, this would result in requiring a wider hole
in the spar to accommodate the lateral movement of the tube when the aileron is
deflected. I also believe there was an earlier discussion of the need to bend
the tube inwards to clear the wingtip rivet line.
> I wonder how others have dealt with this issue. I'm consideringL
> 1.) installing the ribs supporting the tube so as to place the tube at a right
angle to the spar,&
> 2.) Moving the tube inwards slightly to assure clearance from structures in the
wing.
>
> I'd appreciate your comments before I start cutting :)
>
> Tim Juhl
>
> --------
> ______________
> CFII
> Champ L16A flying
> Zodiac XL - Jabiru 3300A
> Tearing wings apart for modification
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=301668#301668
>
>
>
--
Mark Hubelbank
NorthEast Monitoring
2 Clock Tower Place
Suite 555
Maynard, MA, 01754 - USA
mhubel@nemon.com
978-443-3955
Message 5
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| Subject: | Re: Aileron balance install |
I moved the balance arm 100 mm inboard and it clears with no bending of the
arm. If you install the ribs at the same angle as the other ribs it is a
bit more difficult to align everything but I feel looks better.
Jeff
In a message dated 6/18/2010 10:12:44 A.M. Eastern Daylight Time,
juhl@avci.net writes:
--> Zenith 601-List message posted by: "Tim Juhl" <juhl@avci.net>
I'm getting ready to install the aileron balance in my right aileron.
Looking at the LAA drawings provided by Zenith for the upgrade I see that they
set the ribs that support the square tube used as a balance arm parallel to
the other ribs in the aileron. This would result in the tube not being at
a right angle to the rear spar. In my view, this would result in
requiring a wider hole in the spar to accommodate the lateral movement of the
tube
when the aileron is deflected. I also believe there was an earlier
discussion of the need to bend the tube inwards to clear the wingtip rivet line.
I wonder how others have dealt with this issue. I'm consideringL
1.) installing the ribs supporting the tube so as to place the tube at a
right angle to the spar, &
2.) Moving the tube inwards slightly to assure clearance from structures
in the wing.
I'd appreciate your comments before I start cutting :)
Tim Juhl
--------
______________
CFII
Champ L16A flying
Zodiac XL - Jabiru 3300A
Tearing wings apart for modification
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=301668#301668
Message 6
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| Subject: | Re: Aileron balance install |
The one I just did I just made square to the hinge line and picked up two existing
rivets for the new rib rivet lines. I checked clearance with a large carpenters
square from the center of one rivet and wouldn't ya know, the next rivet
was 40mm away, ( just perfect for the rib lines) . It was very easy to draw
those lines around the aileron skin using a square. Once the lines were drawn
just mark and drill the end holes, and rivet fan for the 5 rivets on the end,
and 8 rivets top and bottom.
--------
Ron Lendon, Clinton Township, MI
WW Corvair with Roy's Garage 5th bearing
Zodiac XL, ScrapBuilder ;-)
http://www.mykitlog.com/rlendon
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=301722#301722
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