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ceengland(at)bellsouth.ne
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 Posted: Fri Dec 29, 2006 6:16 am Post subject: RV-7 rear deck question |
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I'm about to rivet the rear deck to the longerons on my -7 fuselage.
The instructions don't mention whether to install the various
shims/spacers that go between the bulkheads & the rear deck. Have
y'all been placing these as you install the read deck, or waiting
until the tail goes on & sliding them in, hoping that they are aligned
correctly?
Thanks,
Charlie
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Bob Collins
Joined: 11 Mar 2006
Posts: 470
Location: St. Paul, Minnesota
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| Posted: Fri Dec 29, 2006 6:34 am Post subject: RV-7 rear deck question |
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I put them on when I intalled the rear deck.
Bob
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Bob Collins
St. Paul, Minn.
Letters from Flyover Country
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lhelming(at)sigecom.net
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| Posted: Fri Dec 29, 2006 5:02 pm Post subject: RV-7 rear deck question |
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Charlie, I believe the spacers you are referring to, I ah do not have the
plans in front of me as I type however, do not get drilled/fitted until the
horizontal stabilizer is fitted to the fuselage. What I have in mind is
held with bolts. I can think of no other spacer/shim so if this does not
sound right to you, please identify the part/parts/skin you are inquiring
about. (I believe I just helped finish this step a month ago so it is
pretty fresh in mind.) Larry in Indiana
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Bob Collins
Joined: 11 Mar 2006
Posts: 470
Location: St. Paul, Minnesota
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| Posted: Fri Dec 29, 2006 5:26 pm Post subject: RV-7 rear deck question |
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I believe that's a different spacer. I think the spacer Charlie is talking
about is the one that goes atop the 710 and the 711 bulkheads, under the aft
deck. I just rechecked the plans, and those CAN be riveted in now. Later in
the process, as you point out , there are two other spacers that go on TOP
of the aft deck and under the HS and, again as you point out, those are
something left until tail mating.
Bob
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Bob Collins
St. Paul, Minn.
Letters from Flyover Country
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ceengland(at)bellsouth.ne
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| Posted: Fri Dec 29, 2006 6:21 pm Post subject: RV-7 rear deck question |
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My apologies for being lazy; I failed to write down the #s before coming
up to the house & asking the question.
Bob's right, it's the spacers between the top of the 710 & 711 spacers &
the 714 deck. The 710 spacer actually gets 4 rivets that end up *under*
the hor stab spar (between the 2 spacers that go on top of 714), so that
one really must be installed prior to the stab installation. I went
ahead & riveted that one. The other is the 'T' shaped one at 711.
My concern is having one shift while drilling the hor stab to the
fuselage, if it's not already riveted in place.
BTW, when making these parts, I failed to notice that the 7ll piece is
called out as AS3-125 & the 2 small spacers that go on top of 710 are
called out as AB-125. I made the 711 spacer from the 8" long AB-125 bar
stock & then realized that I didn't have enough left to make the 2 small
spacers. The bar stock is much harder than the 'sheet' stock. I called
Van's & Ken said that it didn't matter which stock each was made of.
(Wonder why they call out different materials if it doesn't matter....)
Charlie
Bob Collins wrote:
[quote]
I believe that's a different spacer. I think the spacer Charlie is talking
about is the one that goes atop the 710 and the 711 bulkheads, under the aft
deck. I just rechecked the plans, and those CAN be riveted in now. Later in
the process, as you point out , there are two other spacers that go on TOP
of the aft deck and under the HS and, again as you point out, those are
something left until tail mating.
Bob
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dan(at)rvproject.com
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| Posted: Fri Dec 29, 2006 6:37 pm Post subject: RV-7 rear deck question |
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Try a little superglue. Literally. It'll stay put while you're drilling
it, and it'll pop right off with a little force when you want to remove it
to debur it.
)_( Dan
RV-7 N714D
www.rvproject.com / www.weathermeister.com
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Bob Collins
Joined: 11 Mar 2006
Posts: 470
Location: St. Paul, Minnesota
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| Posted: Fri Dec 29, 2006 6:55 pm Post subject: RV-7 rear deck question |
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| Quote: | My concern is having one shift while drilling the hor stab to the
fuselage, if it's not already riveted in place.
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Everything under the deck is stable since they're riveted now. When you
install the HS, the only thing floating around there is the two smaller
spacers that go on top of the deck. Van's instructions, I think, present
this as a two-step process (I think it has you drilling the HS into the
deck/longeron combination and then they have you insert the little spacers
and drill that. Didn't make sense to me to do it that way, nor apparently to
anyone else that I've talked to who think when it's time to install the HS,
put the whole shootin' match in there...superglue or duct tape or clamp and
drill.
But you don't need to worry 'bout that yet, Charlie. Rivet that other spacer
on (the "T" spacer) and then get the aft deck put in place.
BTW, when I put my aft deck on -- and I'm going from memory here -- one
thing you might want to do in order to position the aft deck correctly is
put the aft skin and the the 709 bulkhead on (that half-moon one) and then
put the aft deck on. The reason I recommend this is the front of that aft
deck is pre-punched and it's one of the parts that -- I think - prepunched
doesn't help that much and could hurt.
Doing it this way ensures that the aft deck will be centered perfectly on
the longerons, the aft deck will be aligned perfectly with the the 709 and
the 709 will be aligned perfectly with the aft skin, which will -- of
course, be aligned perfectly with the side skins and longeron. Everybody's
happy.
Don't be stupid like me. I put the aft deck on there and didn't center it
that well, then clecoed the 709 on and drilled. The aft deck was, in fact,
slightly aligned to the right side and while the edge distance on the left
longeron was accepta ble (barely), the 709 didn't fit the aft skin as well
as I would've liked. I ended up taking the 709, riveting a doubler over the
holes and redrilling to make it fit better with the aft skin.
Bob
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Bob Collins
St. Paul, Minn.
Letters from Flyover Country
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dhall(at)donka.net
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| Posted: Fri Dec 29, 2006 9:23 pm Post subject: RV-7 rear deck question |
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I fit and riveted the spacers with the rear deck at that time.
******************************************
Don Hall
N517DG (registered)
rv7 fuselage
http://rv7.donka.net
******************************************
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