ianxbrown
Joined: 16 May 2009
Posts: 80
|
 Posted: Sat Jul 11, 2009 4:55 am Post subject: RV-List Digest: 5 Msgs - 07/10/09 |
 |
|
Matt,
I had exactly the same problem on my RV-9A. In the end, I resolved it
by making the holes ever so slightly oval and retightening them, while
maintaining upward pressure on the tip. Not sure of the origin of the
problem but it could be that their molds are off.
Ian Brown
On Fri, 2009-07-10 at 23:58 -0700, RV-List Digest Server wrote:
| Quote: | *
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RV-List Digest Archive
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Total Messages Posted Fri 07/10/09: 5
----------------------------------------------------------
Today's Message Index:
----------------------
1. 02:29 PM - Wing Tip Installation - Droopy Right... (Matt Dralle)
2. 05:23 PM - Re: Wing Tip Installation - Droopy Right... (Frank Stringham)
3. 05:51 PM - Re: Wing Tip Installation - Droopy Right... (Michael W Stewart)
4. 05:54 PM - Re: Wing Tip Installation - Droopy Right... (Darrell Reiley)
5. 07:24 PM - Re: Wing Tip Installation - Droopy Right... (Charlie England)
________________________________ Message 1 _____________________________________
Time: 02:29:23 PM PST US
From: Matt Dralle <dralle(at)matronics.com>
Subject: Wing Tip Installation - Droopy Right...
Dear Listers,
I installed the wing tips on the -8 last week and they came out perfect. I was
really pleased and relieved. They each took about 8 hours including cutting
the plastic lens.
That's the good news. The bad news is that the right tip at the trailing edge
came out about 1/2" low. The left one is exactly the correct height. I measured
this by making the short aileron push rod the exact length stated on the plans
(27 5/8" I think it was) and then using that W-730 jig to center the bellcrank
and I assume the aileron.
Installation of the left wing tip, which I did first, went really smoothly and
I had little trouble fitting or aligning. The right one, however, really fought
me and in my zest to make sure that the lap joint between the metal skin and
the fiberglass was perfect, I kind of neglected to triple check the height of
the trailing edge of the tip as it related to the aileron. I focused more on
the alignment of length of the two and that they were correct.
Anyway, I was rigging the ailerons this week and connecting to the control stick
and that's when I noticed that the right tip was drooping about 1/2" lower than
the aileron. I tried removing the tip RIB and fusing around a bit, but this
didn't help, and then I tried slitting the trailing edge of the tip. This
allowed me to align the tip to the aileron at the inboard side of the tip, but
it didn't allow me to raise the outboard edge of the tip (without a whole bunch
of extra fiberglass work).
I'm not opposed to getting a new wing tip and just starting over again, but I was
wondering if anyone else had this same trouble, i.e. left tip fit great, right
tip didn't fit very well and was low at the trailing edge. I'm wondering
if its just a problem with the fiberglass layup.
Now that all of the holes in the skin for the wing tip mounting are dimpled (I
used #6 screws), fitting a new tip is going to be a real tough job because I won't
be able to get the tip flat against the skin. Arg...
Any feedback would be appreciated.
Matt Dralle
RV-8 #82880 N998RV
Wing-to-Fuselage Fairings (oh, and redoing the right wing tip)...
________________________________ Message 2 _____________________________________
Time: 05:23:04 PM PST US
From: Frank Stringham <fstringham(at)hotmail.com>
Subject: RE: Wing Tip Installation - Droopy Right...
Hi Matt
First C let me say your workmenship looks first rate. Secondly C I think
you have run into a typical problem that most have faced at this point in t
he wing/tip build. Third C I think that the extra fiberglass work will do
the trick. Those who don't like the FG stuff will probably consider a new t
ip...but ... this doesn't eliminate the potential of the new tip ending up
in the sme position or worse....
Good luck in whatever choice you choose and please update us as to the solu
tion.
Frank (at) 1L8 ...RV7A... 1st flight nect week...........
> Date: Fri C 10 Jul 2009 14:26:47 -0700
> To: rv-list(at)matronics.com=3B rv8-list(at)matronics.com=3B rv7-list(at)matronics
.com
> From: dralle(at)matronics.com
> Subject: Wing Tip Installation - Droopy Right...
>
>
> Dear Listers C
>
> I installed the wing tips on the -8 last week and they came out perfect.
I was really pleased and relieved. They each took about 8 hours including c
utting the plastic lens.
>
> That's the good news. The bad news is that the right tip at the trailing
edge came out about 1/2" low. The left one is exactly the correct height. I
measured this by making the short aileron push rod the exact length stated
on the plans (27 5/8" I think it was) and then using that W-730 jig to cen
ter the bellcrank and I assume the aileron.
>
> Installation of the left wing tip C which I did first C went really smo
othly and I had little trouble fitting or aligning. The right one C howeve
r C really fought me and in my zest to make sure that the lap joint betwee
n the metal skin and the fiberglass was perfect C I kind of neglected to t
riple check the height of the trailing edge of the tip as it related to the
aileron. I focused more on the alignment of length of the two and that the
y were correct.
>
> Anyway C I was rigging the ailerons this week and connecting to the cont
rol stick and that's when I noticed that the right tip was drooping about 1
/2" lower than the aileron. I tried removing the tip RIB and fusing around
a bit C but this didn't help C and then I tried slitting the trailing edg
e of the tip. This allowed me to align the tip to the aileron at the inboar
d side of the tip C but it didn't allow me to raise the outboard edge of t
he tip (without a whole bunch of extra fiberglass work).
>
> I'm not opposed to getting a new wing tip and just starting over again C
but I was wondering if anyone else had this same trouble C i.e. left tip
fit great C right tip didn't fit very well and was low at the trailing edg
e. I'm wondering if its just a problem with the fiberglass layup.
>
> Now that all of the holes in the skin for the wing tip mounting are dimpl
ed (I used #6 screws) C fitting a new tip is going to be a real tough job
because I won't be able to get the tip flat against the skin. Arg...
>
> Any feedback would be appreciated.
>
> Matt Dralle
> RV-8 #82880 N998RV
> Wing-to-Fuselage Fairings (oh C and redoing the right wing tip)...
_________________________________________________________________
Hotmail=AE has ever-growing storage! Don=92t worry about storage limits.
http://windowslive.com/Tutorial/Hotmail/Storage?ocid=TXT_TAGLM_WL_HM_Tuto
rial_Storage_062009
________________________________ Message 3 _____________________________________
Time: 05:51:16 PM PST US
Subject: Re: Wing Tip Installation - Droopy Right...
From: Michael W Stewart <mike.stewart(at)us.ibm.com>
Matt,
Your problem is common.
Your easiest fix is to slit the trailing edge of the tip and reglass in
to
the correct position.
Slit, ductape to position, glass a couple places, remove ductape, glass
the
rest.
A new tip will not guarantee alignment, but the above technique will.
Best,
Mike,
From: Matt Dralle <dralle(at)matronics.com>
To: rv-list(at)matronics.com, rv8-list(at)matronics.com, rv7-list(at)m
atronics.com
Date: 07/10/2009 06:46 PM
Subject: Wing Tip Installation - Droopy Right...
Sent by: owner-rv-list-server(at)matronics.com
Dear Listers,
I installed the wing tips on the -8 last week and they came out perfect
. I
was really pleased and relieved. They each took about 8 hours includin
g
cutting the plastic lens.
That's the good news. The bad news is that the right tip at the traili
ng
edge came out about 1/2" low. The left one is exactly the correct heig
ht.
I measured this by making the short aileron push rod the exact length
stated on the plans (27 5/8" I think it was) and then using that W-730
jig
to center the bellcrank and I assume the aileron.
Installation of the left wing tip, which I did first, went really smoot
hly
and I had little trouble fitting or aligning. The right one, however,
really fought me and in my zest to make sure that the lap joint between
the
metal skin and the fiberglass was perfect, I kind of neglected to tripl
e
check the height of the trailing edge of the tip as it related to the
aileron. I focused more on the alignment of length of the two and that
they were correct.
Anyway, I was rigging the ailerons this week and connecting to the cont
rol
stick and that's when I noticed that the right tip was drooping about 1
/2"
lower than the aileron. I tried removing the tip RIB and fusing around
a
bit, but this didn't help, and then I tried slitting the trailing edge
of
the tip. This allowed me to align the tip to the aileron at the inboar
d
side of the tip, but it didn't allow me to raise the outboard edge of t
he
tip (without a whole bunch of extra fiberglass work).
I'm not opposed to getting a new wing tip and just starting over again,
but
I was wondering if anyone else had this same trouble, i.e. left tip fit
great, right tip didn't fit very well and was low at the trailing edge.
I'm wondering if its just a problem with the fiberglass layup.
Now that all of the holes in the skin for the wing tip mounting are dim
pled
(I used #6 screws), fitting a new tip is going to be a real tough job
because I won't be able to get the tip flat against the skin. Arg...
Any feedback would be appreciated.
Matt Dralle
RV-8 #82880 N998RV
Wing-to-Fuselage Fairings (oh, and redoing the right wing
tip)...[attachment "2009.07.02 - RV-8 - Right Wing Tip Installation A
(42).jpg" deleted by Michael W Stewart/Atlanta/IBM] [attachment "2009.0
6.28
- RV-8 - Left Wing Tip Installation (39).jpg" deleted by Michael W
Stewart/Atlanta/IBM] [attachment "2009.07.02 - RV-8 - Right Wing Tip
Installation A (40).jpg" deleted by Michael W Stewart/Atlanta/IBM]
[attachment "2009.06.28 - RV-8 - Left Wing Tip Installation (42).jpg"
deleted by Michael W Stewart/Atlanta/IBM]
________________________________ Message 4 _____________________________________
Time: 05:54:12 PM PST US
From: Darrell Reiley <lifeofreiley2003(at)yahoo.com>
Subject: RE: Wing Tip Installation - Droopy Right...
If you want your tips to work, re-glass and drill them up with the final rigging
in place. No big deal, you have alum strips as a back-up for the nutplates...
you'll be fine
-d-
--- On Fri, 7/10/09, Frank Stringham <fstringham(at)hotmail.com> wrote:
> From: Frank Stringham <fstringham(at)hotmail.com>
> Subject: RE: Wing Tip Installation - Droopy Right...
> To: rv-list(at)matronics.com
> Date: Friday, July 10, 2009, 7:20 PM
>
>
>
> #yiv787994380 .hmmessage P
> {
> margin:0px;padding:0px;}
> #yiv787994380 {
> font-size:10pt;font-family:Verdana;}
>
>
>
> Hi Matt
>
>
>
> First, let me say your workmenship looks first rate.
> Secondly, I think you have run into a typical problem that
> most have faced at this point in the wing/tip build. Third,
> I think that the extra fiberglass work will do the
> trick.Those who don't like the FG stuff will
> probably consider a new tip...but ... this doesn't
> eliminate the potential of the new tip ending up in the sme
> position or worse....
>
>
>
> Good luck in whatever choice you choose and please update
> us as to the solution.
>
>
>
> Frank (at) 1L8 ...RV7A... 1st flight nect week...........
>
> > Date: Fri, 10 Jul 2009 14:26:47 -0700
> > To: rv-list(at)matronics.com; rv8-list(at)matronics.com;
> rv7-list(at)matronics.com
> > From: dralle(at)matronics.com
> > Subject: Wing Tip Installation - Droopy
> Right...
> >
> >
> > Dear Listers,
> >
> > I installed the wing tips on the -8 last week and they
> came out perfect. I was really pleased and relieved. They
> each took about 8 hours including cutting the plastic lens.
> >
> > That's the good news. The bad news is that the
> right tip at the trailing edge came out about 1/2" low.
> The left one is exactly the correct height. I measured this
> by making the short aileron push rod the exact length stated
> on the plans (27 5/8" I think it was) and then using
> that W-730 jig to center the bellcrank and I assume the
> aileron.
> >
> > Installation of the left wing tip, which I did first,
> went really smoothly and I had little trouble fitting or
> aligning. The right one, however, really fought me and in my
> zest to make sure that the lap joint between the metal skin
> and the fiberglass was perfect, I kind of neglected to
> triple check the height of the trailing edge of the tip as
> it related to the aileron. I focused more on the alignment
> of length of the two and that they were correct.
> >
> > Anyway, I was rigging the ailerons this week and
> connecting to the control stick and that's when I
> noticed that the right tip was drooping about 1/2"
> lower than the aileron. I tried removing the tip RIB and
> fusing around a bit, but this didn't help, and then I
> tried slitting the trailing edge of the tip. This allowed me
> to align the tip to the aileron at the inboard side of the
> tip, but it didn't allow me to raise the outboard edge
> of the tip (without a whole bunch of extra fiberglass
> work).
> >
> > I'm not opposed to getting a new wing tip and just
> starting over again, but I was wondering if anyone else had
> this same trouble, i.e. left tip fit great, right tip
> didn't fit very well and was low at the trailing edge.
> I'm wondering if its just a problem with the fiberglass
> layup.
> >
> > Now that all of the holes in the skin for the wing tip
> mounting are dimpled (I used #6 screws), fitting a new tip
> is going to be a real tough job because I won't be able
> to get the tip flat against the skin. Arg...
> >
> > Any feedback would be appreciated.
> >
> > Matt Dralle
> > RV-8 #82880 N998RV
> > Wing-to-Fuselage Fairings (oh, and redoing the right
> wing tip)...
>
> Hotmail has ever-growing storage! Dont
> worry about storage limits. Check
> it out.
>
>
>
>
>
________________________________ Message 5 _____________________________________
Time: 07:24:54 PM PST US
From: Charlie England <ceengland(at)bellsouth.net>
Subject: Re: Wing Tip Installation - Droopy Right...
Matt Dralle wrote:
> Dear Listers,
>
> I installed the wing tips on the -8 last week and they came out perfect. I was
really pleased and relieved. They each took about 8 hours including cutting
the plastic lens.
>
> That's the good news. The bad news is that the right tip at the trailing edge
came out about 1/2" low. The left one is exactly the correct height. I measured
this by making the short aileron push rod the exact length stated on the
plans (27 5/8" I think it was) and then using that W-730 jig to center the bellcrank
and I assume the aileron.
>
> Installation of the left wing tip, which I did first, went really smoothly and
I had little trouble fitting or aligning. The right one, however, really fought
me and in my zest to make sure that the lap joint between the metal skin
and the fiberglass was perfect, I kind of neglected to triple check the height
of the trailing edge of the tip as it related to the aileron. I focused more
on the alignment of length of the two and that they were correct.
>
> Anyway, I was rigging the ailerons this week and connecting to the control stick
and that's when I noticed that the right tip was drooping about 1/2" lower
than the aileron. I tried removing the tip RIB and fusing around a bit, but
this didn't help, and then I tried slitting the trailing edge of the tip. This
allowed me to align the tip to the aileron at the inboard side of the tip, but
it didn't allow me to raise the outboard edge of the tip (without a whole bunch
of extra fiberglass work).
>
> I'm not opposed to getting a new wing tip and just starting over again, but I
was wondering if anyone else had this same trouble, i.e. left tip fit great,
right tip didn't fit very well and was low at the trailing edge. I'm wondering
if its just a problem with the fiberglass layup.
>
> Now that all of the holes in the skin for the wing tip mounting are dimpled (I
used #6 screws), fitting a new tip is going to be a real tough job because I
won't be able to get the tip flat against the skin. Arg...
>
> Any feedback would be appreciated.
>
> Matt Dralle
> RV-8 #82880 N998RV
> Wing-to-Fuselage Fairings (oh, and redoing the right wing tip)...
It's been a looong time since I fit the tips, but IIRC, I used the
technique of holding the aileron in alignment with the jig that uses the
tooling holes in the outboard rib & aileron rib. Basically 3 screws in a
stick.
I too had good luck with the 1st tip & was badly misaligned with the 2nd
(overconfident). The tip was just rotated slightly in the end of the
wing, causing the trailing edge to be misaligned with the aileron. I was
able to just remove the clecos & re-fit the tip. Most of the holes moved
enough that redrilling wasn't a problem.
For what it's worth, you can use flush rivet sets in your hand squeezer
to solve your dimple problem. Call Van's & ask, but they've told others
that you can 'undimple' without doing damage to the skin.
Charlie
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