Today's Message Index:
----------------------
1. 06:09 AM - Chat Reminder (George Race)
2. 10:34 AM - aileron balance location (Elden Jacobson)
3. 12:06 PM - Re: aileron balance location (Paul Mulwitz)
4. 02:19 PM - Re: aileron balance location (Afterfxllc@aol.com)
5. 03:02 PM - Re: Nuts on outside (Damien)
6. 04:13 PM - Re: Nuts on outside (chuck960)
Message 1
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Live Chat Room every Monday evening around 8:00 EDT
http://www.mykitairplane.com <blocked::http://www.mykitairplane.com/>
Click on the Chat Room link at the top of the page.
George
Message 2
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| Subject: | aileron balance location |
I'm finally ready to do this, but do not understand the logic in placing th
e arm at the aileron's extreme tip. Is there a downside to moving it inboar
d, say, 100mn? Clarity on this would be much appreciated.
-
Elden Jacobson
xl/3300
(do not archive)=0A=0A=0A
Message 3
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| Subject: | aileron balance location |
Hi Elden,
Well, one consideration is the large hole you need to make in the rear
channel to allow the balance arm into the wing cavity. I suppose the
weakening of this primary structural element is less significant near the
wing tip.
Also, in the case of the aileron which contains the trim motor and tab there
isn't room for the new ribs in the middle of the aileron.
One other little point: This is the design that was reviewed by the FAA
engineers for thousands of man-hours. If you make a significant change you
need to duplicate that effort to determine your new design is at least as
good as the one that was approved. It seems a lot easier to just follow the
design released to us.
Paul
XL upgrading second wing
From: owner-zenith601-list-server@matronics.com
[mailto:owner-zenith601-list-server@matronics.com] On Behalf Of Elden
Jacobson
Sent: Sunday, September 05, 2010 10:32 AM
Subject: Zenith601-List: aileron balance location
I'm finally ready to do this, but do not understand the logic in placing the
arm at the aileron's extreme tip. Is there a downside to moving it inboard,
say, 100mn? Clarity on this would be much appreciated.
Elden Jacobson
xl/3300
(do not archive)
Message 4
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| Subject: | Re: aileron balance location |
Elden
You need to move it 100 mm inboard if you angle the new ribs (per plans)
however Zenith placed there new ribs at 90 degrees from the trailing edge and
if you do that it will work also.
Either way isn't (per plans) so the choice is yours. I move all my arms
inboard 100 mm and haven't had any problems.
One other note is if you have hinged ailerons you will have about 5 or 6
extra weights and your bolts will be too long. I haven't heard anyone else
address this issue but I now have enough extra weights for another upgrade.
Jeff
In a message dated 9/5/2010 1:34:36 P.M. Eastern Daylight Time,
eldenej@yahoo.com writes:
I'm finally ready to do this, but do not understand the logic in placing
the arm at the aileron's extreme tip. Is there a downside to moving it
inboard, say, 100mn? Clarity on this would be much appreciated.
Elden Jacobson
xl/3300
(do not archive)
(http://www.matronics.com/Navigator?Zenith601-List)
(http://www.matronics.com/contribution)
Message 5
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| Subject: | Re: Nuts on outside |
Thanks for all of your responses.
I had thougt about making inspection holes as Paul did, but I have
already
gone forward with the anchor nuts. I am going to use anchor nuts along
the sides also, as
Jeff did. I was hesitant to drill the extra holes in the longeron.
Thanks,
Regards,
Damien
DO NOT ARCHIVE
----- Original Message -----
From: Damien
To: zenith601-list@matronics.com
Sent: Friday, September 03, 2010 9:11 PM
Subject: Zenith601-List: Nuts on outside
Group:
While I was waiting for a new prop this summer, I decided not to waste
the downtime, so
I drilled the rivets out of the cover over my instrument panel and gas
tank on my 601 HDS
and I replaced the rivets with nutplates, and with just bolts and nuts
along the longerons.
Unfortunately, it was a son-of-a-gun to put nuts and bolts along the
longerons. It would be
much easier if I were to thread the bolts from the inside and place
the nuts along the
outside of the longeron, on just the passenger side of the plane. My
plan is to use thin nuts
and the shortest 8-32 screws that I can. My AP/IA friend said that we
can't do that, because it
is not aviation. I want to do it anyway because it would make it so
much easier to access the instrument
panel and I don't think that it would affect streamlining
significantly.
What say you, members of the jury ?
Regards,
Damien
N48TK
Message 6
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| Subject: | Re: Nuts on outside |
You could cut a strip of 4130 steel .090 minimum to fit the inside of the longeron
the length of the holes you want to put screws in plus 20mm or so. Then backdrill
from the outside and tap the holes for 8-32 screws. The strip would only
strengthen the longeron when the screws were in place.
You could glue the strip to stay put when the screws were out but I think two flush
rivets placed between the existing holes would be ok.
Chuck
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=311480#311480
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