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Holes under horizonal stab

 
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bobbyhester(at)charter.ne
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PostPosted: Wed Jan 03, 2007 7:07 pm    Post subject: Holes under horizonal stab Reply with quote
Ok, I'm ready to drill and tap the holes for the strips under Horizonal
stab, the one that close up the gap. It appears that I'm ging to have to
remove the tail to be able to do this Sad
Please tell me it is no so! How have you guys done this?

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Surfing the web from my laptop in Hopkinsville, KY
Visit my RV7A site: http://www.geocities.com/hester-hoptown/RVSite/

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kboatright1(at)comcast.ne
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PostPosted: Wed Jan 03, 2007 7:45 pm    Post subject: Holes under horizonal stab Reply with quote
Make them the same way you made the strips that cover the gap between your
wing and fuselage:

Use an offset tracing tool to transfer the profile of the HS to the aluminum
strips. Just tape the strips immediately below the HS, then measure the
distance (call it "X") from the leading edge of the HS down to the aluminum
strips. Make an aluminum spacer which will hold a sharpie X inches from
whatever the spacer is touching. Use this combination up against the HS to
transfer its shape to the aluminum strips. Pull the strips loose, trim to
shape, and you're done. You may want to try it on a piece of cardboard
first just to make sure your technique is good...

By the way, there is no reason to drill and tap the holes for those strips.
Why not just pop rivet the strips to the airframe. Simpler, faster, and
there is no reason to ever remove the strips.

KB

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rickgray(at)roadrunner.co
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PostPosted: Thu Jan 04, 2007 4:20 am    Post subject: Holes under horizonal stab Reply with quote
I think Bobby wanted to know how to drill and tap the holes.....not make the strips??

Yo' Bobby :^).

I've tried 2 methods and they both work fine.

1-use a close fitting 90 angle drill - if you don't have one you can go over to Sears or Harbor Freight and pick up a little 'snake' drill extension. The extensions are about 9" to 12" long.....I use them a LOT during the building process....you can literally drill around corners with these babies....and they only cost about $10.

2-If you don't have the above then use your 'long' aviation bits. Just 'flex' the bit....you'll be able to keep the drill away from the HS stab and hold the cutting end of the bit where you need it. Problem here is you may not have one that is 7/64's tapping size for the #6 screws you'll want to use here. Not really a big problem....you'll find that you can STILL tap the holes OK even when drilled with the 3/32" 'long' aviation bit.

When you go to tap the holes you'll have to go slow as you won't be able to rotate the tap 360deg. Just pull up a chair and take your time. All said and done it will still be WAY easier than removing your stab.

Good Luck,
Rick in Ohio at the Buffalo Farm
http://rv6rick.tripod.com/ohiovalleyrvators/

for the archives

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khorton01(at)rogers.com
Guest
PostPosted: Fri Jan 05, 2007 7:48 am    Post subject: Holes under horizonal stab Reply with quote
These are the holes for the screws that attach the lower empennage
fairing. The screws go into the upper longeron.

Kevin Horton
On 5 Jan 2007, at 08:47, Michèle Delsol wrote:

[quote]
<michele.delsol(at)microsigma.fr>

I am intrigued - what holes Ander the RV8 HS need tapping??

Michele
RV8 - Finishing

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