Today's Message Index:
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1. 11:55 AM - Elevator Stiffener locations (Garey Wittich)
2. 06:09 PM - Re: BooHoo - Trim Tab Alignment... (Matt Dralle)
Message 1
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Subject: | Elevator Stiffener locations |
Greetings:
Ref: LEFT Elevator (RV8-A)
My Dwg 4PP, Rev 1 (older Dwg) for the Elevator gives "dimensions" for the location
of the Elevator Stiffeners (My Elevator Skin [E-601PP-L] is NOT prepunched
for the Stiffener locations). Using the dimensions on Dwg 4PP places the 4th
Stiffener IN from the LEFT Elevator TIP in the SAME location as E-606PP (Elevator
Trim Spar) by about 7/16". (Other words, the Stiffener crosses the Elevator
Trim Spar 7/16" in from the tip of the Trim Spar.)
Have checked and rechecked the measurements per Dwg 4PP and they are good, so others
must have run into this same problem. It seems to me that the solution
is to move the Stiffener location out 1/8" from the end of the Elevator Trim Spar
(now the Stiffeners will not be separated by an equal distance).
The other solution would be to cut this Stiffener in two pieces so it bridges
the Elevator Trim Spar (now the Stiffeners can be equally spaced). This method
seems less desirable as a one piece Stiffener will have more strength than
a 2 piece Stiffener.
What did you Builders do that had this same problem ?????
Appreciate your help, Garey Wittich Santa Monica, CA
Message 2
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Subject: | Re: BooHoo - Trim Tab Alignment... |
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:
>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@matronics.com Email
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