Author: Mark Lancaster <mlancast2004@...> Time: Sun Feb 8, 2004 6:03 pm PST Link
Q: Is it advisable to use rattle can self-etching primer over powder coated parts (like the HS-412PP ; elevator hinge brackets), should they become scratched? Is there concern for corrosion in these parts after drilling the holes to size (not that I can see anyway to utilize a primer within the drilled match-hole)?
Q: I see may builders (on builder internet sites) constucting jugs to build the early stages (rear spar assembly) of the horizontal stabilizer of pre-punched (pre-aligned kits); is this overkill or a neccesity for accurate alignment?
Q: It appears to me that the HS-411 Hinge brackets mount in the 30&31st hole counting from the left of the rear spar reinforcement bars (HS-609PP) (plan date 1/7/02); but this aligns the bracket off-center of the 2 rear spar sections (HS-603PP) by one hole to the right (on my kit parts) relative to alignment per the exploded iso view. Am I missing something here?
Thanks for any help here.
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Author: "microsmurfer" <microsmurfer@...> Time: Sun Feb 8, 2004 9:08 pm PST Link
> Q: I see may builders (on builder internet sites) constucting jugs
to build the early stages (rear spar assembly) of the horizontal
stabilizer of pre-punched (pre-aligned kits); is this overkill or a
neccesity for accurate alignment?
>From my own experience.. it'd be an overkill.
> Q: It appears to me that the HS-411 Hinge brackets mount in the
30&31st hole counting from the left of the rear spar reinforcement
bars (HS-609PP) (plan date 1/7/02); but this aligns the bracket off-
center of the 2 rear spar sections (HS-603PP) by one hole to the
right (on my kit parts) relative to alignment per the exploded iso
view. Am I missing something here?
I didn't count it that way. It's the second hole (from either left
or right) after that little "gap" in the middle of the spar (where
fuselage attaches which is to be drilled at a later stage). IIRC,
that puts HS-411 right in the middle of the spar.
IOW, it's the second hole from the HS-405 rib.
Radomir
Author: "c182pilot" <c182pilot@...> Time: Sun Feb 8, 2004 9:08 pm PST Link
Mark,
There is probably a better way, but I used a Q-tip to put self-etching
primer in the bracket holes where I match drilled them to the spar. I
left the powder coating alone. Keep in mind that I live in a very dry
and arid climate, so corrosion is not as big of a concern for me. I am
priming just in case I ever had to sell it......but lets not get on
that subject. :o)
I have one of the newer emp kits from Vans. The newer Emp kits are
totally pre-punched. It is my understanding that the older kits
required some fitting and drilling in some areas. I think the skin was
pre-punched but the ribs were not, thus requiring the jig.
I have built my HS, VS so far without any alignment jigs and they are
perfectly straight and true. Think about it, if all of the holes are
already there and at given/correct dimensions, when you connect hole
with hole you get a "self aligned" dimensional shape.
If you have the older emp kit, you wll definitely need jigs to keep
everything aligned.
Ben
--- In RV7and7A@yahoogroups.com, Mark Lancaster <mlancast2004@y...> wrote:
> Q: Is it advisable to use rattle can self-etching primer over powder
coated parts (like the HS-412PP ; elevator hinge brackets), should
they become scratched? Is there concern for corrosion in these parts
after drilling the holes to size (not that I can see anyway to utilize
a primer within the drilled match-hole)?
>
> Q: I see may builders (on builder internet sites) constucting jugs
to build the early stages (rear spar assembly) of the horizontal
stabilizer of pre-punched (pre-aligned kits); is this overkill or a
neccesity for accurate alignment?
>
> Q: It appears to me that the HS-411 Hinge brackets mount in the
30&31st hole counting from the left of the rear spar reinforcement
bars (HS-609PP) (plan date 1/7/02); but this aligns the bracket
off-center of the 2 rear spar sections (HS-603PP) by one hole to the
right (on my kit parts) relative to alignment per the exploded iso
view. Am I missing something here?
>
> Thanks for any help here.
> ---------------------------------
> Do you Yahoo!?
> Yahoo! Finance: Get your refund fast by filing online
>
> [Non-text portions of this message have been removed]
Author: "vbpiper" <vbpiper@...> Time: Sun Feb 8, 2004 9:08 pm PST Link
Mark
1. Van's sells a touch-up paint for the powder-coated parts. Yes,I
would be concerned about scratches in the powder coat. I have not
been priming the holes for the bolts, etc. My reasoning is that it
would be scraped off when I put the bolts back in.
2. I personally don't believe that jigs are necessary with the pre-
punched kits. I did not use a jig and all came out nice and straight.
3. Don't know the answer. Hey, 2 out of 3 ain't bad (Meatloaf).
Have fun building.
Ward
--- In RV7and7A@yahoogroups.com, Mark Lancaster <mlancast2004@y...>
wrote:
> Q: Is it advisable to use rattle can self-etching primer over
powder coated parts (like the HS-412PP ; elevator hinge brackets),
should they become scratched? Is there concern for corrosion in
these parts after drilling the holes to size (not that I can see
anyway to utilize a primer within the drilled match-hole)?
>
> Q: I see may builders (on builder internet sites) constucting jugs
to build the early stages (rear spar assembly) of the horizontal
stabilizer of pre-punched (pre-aligned kits); is this overkill or a
neccesity for accurate alignment?
>
> Q: It appears to me that the HS-411 Hinge brackets mount in the
30&31st hole counting from the left of the rear spar reinforcement
bars (HS-609PP) (plan date 1/7/02); but this aligns the bracket off-
center of the 2 rear spar sections (HS-603PP) by one hole to the
right (on my kit parts) relative to alignment per the exploded iso
view. Am I missing something here?
>
> Thanks for any help here.
> ---------------------------------
> Do you Yahoo!?
> Yahoo! Finance: Get your refund fast by filing online
>
> [Non-text portions of this message have been removed]
Author: "Dan Checkoway" <dan@...> Time: Sun Feb 8, 2004 9:08 pm PST Link
Van's sells a little "nail polish" thingie of touch-up for the powder coat.
I forget the P/N, but it's on their site and online parts list.
If I could construct JUGS, I wouldn't have gotten this far along, would have
been way too distracted...just kidding. Even though the kits are
pre-punched, most people seem to have an easier time riveting wings when
they're hanging on a stand of some sort. My 2 cents is that you may as well
make an H frame when you build your emp, and then knock out the cross member
and use the end posts as a wing stand when you build your wings. That
is...if you have space and if you're anal. I guess it's no longer required
according to Van's, but it's still a good way to *ensure* no twist if you're
careful. Why not do it?
No idea on the 3rd question...somebody with recent emp experience will chime
in I'm sure.
Best of luck,
)_( Dan
RV-7 N714D
http://www.rvproject.com
----- Original Message -----
From: "Mark Lancaster" <mlancast2004@y...>
To: <RV7and7A@yahoogroups.com>
Sent: Sunday, February 08, 2004 4:14 PM
Subject: [RV7Yahoo] priming brackets, horizonal stabilier jigs, HS-411 hinge
bracket placement
> Q: Is it advisable to use rattle can self-etching primer over powder
coated parts (like the HS-412PP ; elevator hinge brackets), should they
become scratched? Is there concern for corrosion in these parts after
drilling the holes to size (not that I can see anyway to utilize a primer
within the drilled match-hole)?
>
> Q: I see may builders (on builder internet sites) constucting jugs to
build the early stages (rear spar assembly) of the horizontal stabilizer of
pre-punched (pre-aligned kits); is this overkill or a neccesity for accurate
alignment?
>
> Q: It appears to me that the HS-411 Hinge brackets mount in the 30&31st
hole counting from the left of the rear spar reinforcement bars (HS-609PP)
(plan date 1/7/02); but this aligns the bracket off-center of the 2 rear
spar sections (HS-603PP) by one hole to the right (on my kit parts) relative
to alignment per the exploded iso view. Am I missing something here?
>
> Thanks for any help here.
> ---------------------------------
> Do you Yahoo!?
> Yahoo! Finance: Get your refund fast by filing online
>
> [Non-text portions of this message have been removed]
> Van's Air Force - World Wide Wing
> www.vansaircraft.net
> Yahoo! Groups Links
Author: "Phil" <pjanderton@...> Time: Mon Feb 9, 2004 7:38 am PST Link
--- In RV7and7A@yahoogroups.com, Mark Lancaster <mlancast2004@y...>
wrote:
> Q: Is it advisable to use rattle can self-etching primer over
powder coated parts (like the HS-412PP ; elevator hinge brackets),
should they become scratched? Is there concern for corrosion in
these parts after drilling the holes to size (not that I can see
anyway to utilize a primer within the drilled match-hole)?
It is probably paranoid overkill, but I have been the lining bolts
and rivets passing through drilled holes in these steel hinges with
an anticorrosive compound called "Duralac". It comes in a tube.
(in Australia, available from http://www.aeroparts.com.au/). This
stuff is designed specifically for metal-metal contacts between
different metals. I have also etch-primed a few small scratches in
the powder coat.
> > Q: It appears to me that the HS-411 Hinge brackets mount in the
30&31st hole counting from the left of the rear spar reinforcement
bars (HS-609PP) (plan date 1/7/02); but this aligns the bracket off-
center of the 2 rear spar sections (HS-603PP) by one hole to the
right (on my kit parts) relative to alignment per the exploded iso
view. Am I missing something here?
My original preview plans (April 2002?) had an error in the HS rear
spar drawings, showing one too few holes between the edge of the left
HS-609PP reinforcing bar and the position of one of the next inboard
hinge. I guess if you are counting from the edge, you are also
missing a hole in your plans. The full size plans with the kit (June
2003) had this error corrected. By my latest plans the rear Spar is
symmetrical, and HS411 lies at dead centre. Also, don't forget to
trim the lower flange of the C-channel spar in this area (making room
for the elev horn down movement) BEFORE you etch/prime.
Enjoy building. Good luck.
Phil Anderton
Sydney, Australia
http://members.optusnet.com.au/rv7/
Author: Todd Moeller <toddmoell@...> Time: Mon Feb 9, 2004 5:23 pm PST Link
Q1- Touch up powder coat from Van's works well.
http://www.vansaircraft.com/cgi-bin/catalog.cgi?ident=1076370672-328-669&browse=misc&product=tu-paint
Q2- I did not use any jigs for any of my empennage,
however, I seemed to fumble over the parts and a jig
(of some sort) would have been nice just to hold it
during the riveting process. Everything came out nice
and straight without jigs.
<snip> It appears to me that the HS-411 Hinge brackets
mount in the 30&31st hole counting from the left of
the rear spar reinforcement bars (HS-609PP)
Q3- If I understand how you counted correctly, from
left to right, my hinge bracket HS-411PP sits in holes
29 & 30. If I count from right to left it sits in
holes 29 & 30. They are equally spaced. The HS-411
"strattles the HS-603 rear spars (one side of the
bracket bolted to each spar). I reviewed DWG 3, Rev.
1 and when I looked at The HS, Rear View (half way up
on left) I also counted HS-411PP in holes 30 & 31 as
you did, however between the HS-411PP and the holes
for the HS-405 main rib there is a set of holes you
don't have yet. (i.e.: fuselage attach points which
state to drill in assembly with F-711C). That may be
how you are getting off center by one hole.
Todd Moeller
Wings
Builder # 71536
http://homepage.mac.com/tamoell/airplane/rv_home.htm
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