Today's Message Index:
----------------------
1. 02:30 PM - Wing Tip Installation - Droopy Right... (Matt Dralle)
2. 03:55 PM - Re: Wing Tip Installation - Droopy Right... (Darrell Reiley)
3. 05:50 PM - Re: Wing Tip Installation - Droopy Right... (David Cudney)
4. 06:16 PM - Re: Wing Tip Installation - Droopy Right... (Darrell Reiley)
Message 1
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| 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
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| Subject: | Re: Wing Tip Installation - Droopy Right... |
If you drilled and fit your tip before rigging... well there it is. Tips are the
very last fit. They move around too much and your goal is to match the rigging.
-d-
--- On Fri, 7/10/09, Matt Dralle <dralle@matronics.com> wrote:
> From: Matt Dralle <dralle@matronics.com>
> Subject: RV7-List: Wing Tip Installation - Droopy Right...
> To: rv-list@matronics.com, rv8-list@matronics.com, rv7-list@matronics.com
> Date: Friday, July 10, 2009, 4:26 PM
>
> 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 3
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| Subject: | Re: Wing Tip Installation - Droopy Right... |
Mat
One possible solution is to carefuly split the trailing edge of the wing tip.
This can be done with a hack saw blade. Thetip can then be pulled apart. Insert
a layerof fiberglass
cloth impregnated with a thick slurry of epoxy mixed with milled glass. The trailing
tip can then be positioned to line up with the aeleron's trailing edge,
and clamped until it sets.
Then trim off fiberglass. Then fill any holes and sand to finish. If done properly,
it should be as strong as original.
Good luck!
Dave
Sent from my iPhone
On Jul 10, 2009, at 2:26 PM, Matt Dralle <dralle@matronics.com> 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)...
<2009.07.02 - RV-8 - Right Wing Tip Installation A (42).jpg>
<2009.06.28 - RV-8 - Left Wing Tip Installation (39).jpg>
<2009.07.02 - RV-8 - Right Wing Tip Installation A (40).jpg>
<2009.06.28 - RV-8 - Left Wing Tip Installation (42).jpg>
Message 4
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| Subject: | Re: Wing Tip Installation - Droopy Right... |
Matt,
I don't agree with patch and fit. Just like wheel pants, if they are not lined
up correctly it will show in performance. Don't PATCH it, fix it properly.
-d-
--- On Fri, 7/10/09, David Cudney <yenduc@sbcglobal.net> wrote:
> From: David Cudney <yenduc@sbcglobal.net>
> Subject: Re: RV7-List: Wing Tip Installation - Droopy Right...
> To: "rv7-list@matronics.com" <rv7-list@matronics.com>
> Date: Friday, July 10, 2009, 7:45 PM
> David Cudney <yenduc@sbcglobal.net>
>
>
> Mat
> One possible solution is to carefuly split the trailing
> edge of the wing tip. This can be done with a hack saw
> blade. Thetip can then be pulled
> apart.Insert a layerof fiberglass
> cloth impregnated with a thick slurry of epoxy mixed with
> milled glass. The trailing tip can then be positioned
> to line up with the aeleron's trailing edge, and clamped
> until it sets.
> Then trim off fiberglass. Then fill any holes and sand to
> finish. If done properly, it should be as strong as
> original.
> Good luck!
> Dave
>
>
>
>
>
> Sent from my iPhone
>
> On Jul 10, 2009, at 2:26 PM, Matt Dralle <dralle@matronics.com>
> 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)...
> <2009.07.02 - RV-8 - Right Wing Tip Installation A
> (42).jpg>
> <2009.06.28 - RV-8 - Left Wing Tip Installation
> (39).jpg>
> <2009.07.02 - RV-8 - Right Wing Tip Installation A
> (40).jpg>
> <2009.06.28 - RV-8 - Left Wing Tip Installation
> (42).jpg>
>
>
> Forum -
> FAQ,
> - MATRONICS WEB FORUMS -
> List Contribution Web Site -
> -Matt
> Dralle, List Admin.
>
>
>
>
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