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Matt Dralle
Site Admin
Joined: 08 Nov 2005
Posts: 25704
Location: Livermore CA USA
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 Posted: Tue Aug 05, 2008 11:56 am Post subject: BooHoo - Trim Tab Alignment... |
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Listers,
Well, the trim tab came out perfect and I'm really pleased with the
mating to the Elevator. That being said, I'm less than pleased with
the for/aft alignment of the Trim Tab. The Trim Tab hangs past the
Elevator trailing edge by about 1/8" of an inch. It is 1/8" along
the whole distance of the Trim Tab. In looking at the cause, it
appears that the skins are all cut such that you are suppose to use
the roundy part of the hinge and not the square cutout when aligning
the hinge for drilling. This would account for 1/16" on each side
and would add up to the 1/8" overhang I'm seeing. Grrrrrr....
What should I do, fellow builders? I could drill out all the rivets
and use a new hinge, and I'm certainly not opposed to that. But am I
making too big a deal out of the whole thing? Or is everyone gonna
look at it forever and go, "Hey, how come your trim take is too long?" 
Bummed Out in Livermore
Matt
RV-8 #82880
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Matt Dralle
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timb
Joined: 16 Apr 2008
Posts: 77
Location: Frankston, Texas
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| Posted: Tue Aug 05, 2008 12:30 pm Post subject: BooHoo - Trim Tab Alignment... |
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Hi Bummed out in Livermore,
[quote] --
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Tim Bryan
RV-6 Flying
N616TB |
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gyoung
Joined: 09 Jan 2006
Posts: 211
Location: Republic of Texas
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| Posted: Tue Aug 05, 2008 1:20 pm Post subject: BooHoo - Trim Tab Alignment... |
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Are you sure you've got the right size pin in there? The loops don't look
like they align right. After that, just set it aside until the end of the
project and then see how you feel about it. It's pretty minor and your F-it
factor changes over time;-)
Regards,
Greg Young
[quote] --
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n1cxo320(at)salidaco.com
Guest
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| Posted: Tue Aug 05, 2008 3:35 pm Post subject: BooHoo - Trim Tab Alignment... |
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That's so minor that you are the only one that will ever notice it.
Functionally it makes no difference whatever. Keep it as is, continue
building and if it really bugs you change it after you get the plane in the
air....some things are not worth fretting about, and this seems to one of
them.
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ronburnett(at)charter.net
Guest
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| Posted: Tue Aug 05, 2008 4:24 pm Post subject: BooHoo - Trim Tab Alignment... |
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Matt,
You did an excellent job. I've redone several things on my RV-6A QB and am still not flying after 8 years. As I tell my friends, I strain at knats and swallow camels.
I would press on with the next step.
Ron Burnett
---- Matt Dralle <dralle(at)matronics.com> wrote:
=============
Listers,
Well, the trim tab came out perfect and I'm really pleased with the
mating to the Elevator. That being said, I'm less than pleased with
the for/aft alignment of the Trim Tab. The Trim Tab hangs past the
Elevator trailing edge by about 1/8" of an inch. It is 1/8" along
the whole distance of the Trim Tab. In looking at the cause, it
appears that the skins are all cut such that you are suppose to use
the roundy part of the hinge and not the square cutout when aligning
the hinge for drilling. This would account for 1/16" on each side
and would add up to the 1/8" overhang I'm seeing. Grrrrrr....
What should I do, fellow builders? I could drill out all the rivets
and use a new hinge, and I'm certainly not opposed to that. But am I
making too big a deal out of the whole thing? Or is everyone gonna
look at it forever and go, "Hey, how come your trim take is too long?"
Bummed Out in Livermore
Matt
RV-8 #82880
| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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aurbo(at)ak.net
Guest
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| Posted: Tue Aug 05, 2008 4:34 pm Post subject: BooHoo - Trim Tab Alignment... |
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Matt,
Looks good. Don't dwell on the small stuff you will never get done.
Mike Ice
RV-9, DAR inspection this weekend, test flight soon after
---
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jsflyrv(at)verizon.net
Guest
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| Posted: Tue Aug 05, 2008 5:21 pm Post subject: BooHoo - Trim Tab Alignment... |
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Hi Matt how you doing?
BTW the trim is very seldom aligned perfectly when you are parked so
most likely we would
have never known except now you have told us. 
Jerry
Matt Dralle wrote:
| Quote: |
Listers,
Well, the trim tab came out perfect and I'm really pleased with the
mating to the Elevator. That being said, I'm less than pleased with
the for/aft alignment of the Trim Tab. The Trim Tab hangs past the
Elevator trailing edge by about 1/8" of an inch. It is 1/8" along the
whole distance of the Trim Tab. In looking at the cause, it appears
that the skins are all cut such that you are suppose to use the roundy
part of the hinge and not the square cutout when aligning the hinge
for drilling. This would account for 1/16" on each side and would add
up to the 1/8" overhang I'm seeing. Grrrrrr....
What should I do, fellow builders? I could drill out all the rivets
and use a new hinge, and I'm certainly not opposed to that. But am I
making too big a deal out of the whole thing? Or is everyone gonna
look at it forever and go, "Hey, how come your trim take is too
long?"
Bummed Out in Livermore
Matt
RV-8 #82880
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http://www.matronics.com/Navigator?RV-List |
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acepilot(at)bloomer.net
Guest
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| Posted: Tue Aug 05, 2008 5:48 pm Post subject: BooHoo - Trim Tab Alignment... |
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cecilth(at)juno.com
Guest
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| Posted: Wed Aug 06, 2008 10:10 am Post subject: BooHoo - Trim Tab Alignment... |
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I would print on it in small print:
"If you noticed this little booboo, keep it to yourself"
Cecil
On Tue, 05 Aug 2008 12:55:33 -0700 Matt Dralle <dralle(at)matronics.com>
writes:
| Quote: |
Listers,
Well, the trim tab came out perfect and I'm really pleased with the
mating to the Elevator. That being said, I'm less than pleased with
the for/aft alignment of the Trim Tab. The Trim Tab hangs past the
Elevator trailing edge by about 1/8" of an inch. It is 1/8" along
the whole distance of the Trim Tab. In looking at the cause, it
appears that the skins are all cut such that you are suppose to use
the roundy part of the hinge and not the square cutout when aligning
the hinge for drilling. This would account for 1/16" on each side
and would add up to the 1/8" overhang I'm seeing. Grrrrrr....
What should I do, fellow builders? I could drill out all the rivets
and use a new hinge, and I'm certainly not opposed to that. But am
I
making too big a deal out of the whole thing? Or is everyone gonna
look at it forever and go, "Hey, how come your trim take is too
long?"
Bummed Out in Livermore
Matt
RV-8 #82880
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Matt Dralle
Site Admin
Joined: 08 Nov 2005
Posts: 25704
Location: Livermore CA USA
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| Posted: Wed Aug 06, 2008 11:00 am Post subject: Re: BooHoo - Trim Tab Alignment... |
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Hey guys, thanks for all the great feedback. I think I'll just set it aside for now and fry some bigger fish, and then come back to it later and see how I feel about it. Jerry's comment about the tab never being aligned very often sitting on the ramp made some good sense. Then again, on picture day....
Thanks!
Matt
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Matt Dralle
Matronics Email List Administrator |
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Matt Dralle
Site Admin
Joined: 08 Nov 2005
Posts: 25704
Location: Livermore CA USA
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| Posted: Sat Aug 09, 2008 5:09 pm Post subject: BooHoo - Trim Tab Alignment... |
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Dear Listers,
Thanks to everyone for all the great feedback on my trim tab
woes. The more I looked at the 1/8" over hang of the trim tab, the
more I couldn't stand it! So I ordered up a new hinge which came
today. Drilling out the rivets wasn't too bad. I used a nice
straight piece of wood taped to the trailing edge of the Elevator as
a reference, and then redrilled the new hinge. Attached is a
"before" and "after" shot. Ah, much better! Now I can sleep at
night. All and all it was pretty easy.
BTW, I picked up a small "air brush" by Badger this afternoon at a
local craft store call Richards. It has a little glass bulb to hold
the paint and with an adapter, hooked right up to my air
compressor. Three drinking straws full of Variprime plus three
straws full of activator was all I needed in the little air brush to
very nicely prime the two pieces of replacement hinge. Clean up was
easy and fast. Great for those "one-off" priming jobs. Just a
little tip from your Uncle Matt...
So, just to set the record straight, none of you guys will now be
able to come up to me and point and laugh when you see my trim tab alignment!!
Best,
Matt Dralle
RV-8 #82880
At 12:55 PM 8/5/2008, Matt Dralle wrote:
| Quote: | Listers,
Well, the trim tab came out perfect and I'm really pleased with the
mating to the Elevator. That being said, I'm less than pleased with
the for/aft alignment of the Trim Tab. The Trim Tab hangs past the
Elevator trailing edge by about 1/8" of an inch. It is 1/8" along
the whole distance of the Trim Tab. In looking at the cause, it
appears that the skins are all cut such that you are suppose to use
the roundy part of the hinge and not the square cutout when aligning
the hinge for drilling. This would account for 1/16" on each side
and would add up to the 1/8" overhang I'm seeing. Grrrrrr....
What should I do, fellow builders? I could drill out all the rivets
and use a new hinge, and I'm certainly not opposed to that. But am
I making too big a deal out of the whole thing? Or is everyone
gonna look at it forever and go, "Hey, how come your trim take is
too long?"
Bummed Out in Livermore
Matt
RV-8 #82880
|
Matt G Dralle | Matronics | PO Box 347 | Livermore | CA | 94551
925-606-1001 V | 925-606-6281 F | dralle(at)matronics.com Email
http://www.matronics.com/ WWW | Featuring Products For Aircraft
| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV-List |
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Matt Dralle
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