Today's Message Index:
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1. 12:52 AM - Options to fix horizontal stabilizers mounts too far inside? (John Marzulli)
2. 04:29 AM - Re: Options to fix horizontal stabilizers mounts too far inside? (Geoff Heap)
3. 07:21 AM - Re: Options to fix horizontal stabilizers mounts too far inside? (MacDonald Doug)
Message 1
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| Subject: | Options to fix horizontal stabilizers mounts too far |
inside?
I placed the horizontal stabilizer mounts 10mm to far inside on both sides.
This was only for the forward mounts. The aft mounts are placed perfectly.
Two options exist in my mind for fixing this:
1. Create a custom mount from the fuselage side shaped to clear the
flange of the stabilizer's mount. This would require a spacer and a much
longer bolt. It also increases the chance of the mount cracking.
2. Open the stabilizer and move the mounts 10mm outside. This may require
some work to the spar.
The first option seems the easiest, but possibly not airworthy. The second
option seems the best ( and a bunch of work ), but I am worried that filling
in the old holes in the spar will interfere and rub with the mount causing
cracking that I could not see.
Picture:
http://3.bp.blogspot.com/_mhDbWUJRTOE/SZUzRJAb9MI/AAAAAAAAGhQ/lQQAMBOosYo/s1600-h/IMG_4817.jpg
John Marzulli
http://www.GenevieveMarzulli.org/
http://marzulli.smugmug.com/
http://701Builder.blogspot.com/
http://www.JohnMarzulli.net/
Message 2
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| Subject: | Re: Options to fix horizontal stabilizers mounts too |
far inside?
Hi John. I know it's only 20mm (3/4") total but with the supports closer to center
the relative airflow, gusts, maneuvers near top of maneuvering envelope would
have a stronger leverage on the horizontal stab. Not much. The wider spaced
mounts would be more stable.
My thoughts...Geoff
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=230076#230076
Message 3
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| Subject: | Re: Options to fix horizontal stabilizers mounts too |
far inside?
Hate to say it John but I think you are going to be opening up your stab. As for
the internal repair, might it be possible to turn the brackets around the other
way and re-use the spar mounting holes? I believe the 750 has the stab mounted
with the angles going inwards rather than the 701's outward brackets.
Might be worth a call to Zenith on that one
Do Not Archive
Doug MacDonald
CH-701 Scratch Builder
NW Ontario, Canada
--- On Fri, 2/13/09, John Marzulli <john.marzulli@gmail.com> wrote:
> From: John Marzulli <john.marzulli@gmail.com>
> Subject: Zenith701801-List: Options to fix horizontal stabilizers mounts too
far inside?
> To: zenith701801-list@matronics.com
> Date: Friday, February 13, 2009, 2:51 AM
> I placed the horizontal stabilizer mounts 10mm to far inside
> on both sides.
> This was only for the forward mounts. The aft mounts are
> placed perfectly.
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