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Speedy11(at)aol.com
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 Posted: Sat Jul 11, 2009 8:14 am Post subject: Wing Tip Installation - Droopy Right |
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Matt,
I have a similar problem except that mine are both off my about 1/2 inch. But my tip are the old style and about 8 years old. I decided to go ahead a fly it and see how it handles and then attack the problem once I've talked to others.
It flies great! I'm not sure I'll change anything.
Let us know on the forum if you find an answer.
Stan Sutterfield
1.0 Hrs
| Quote: | 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. |
Summer concert season is here! Find your favorite artists on tour at TourTracker.com.
[quote][b]
| | - The Matronics RV8-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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glennbell(at)cablelynx.co
Guest
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| Posted: Mon Jul 13, 2009 6:08 am Post subject: Wing Tip Installation - Droopy Right |
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For what its worth…I used the alignment jigs exactly as called for in aligning the ailerons…when I then lined up the flaps it seemed that they were a little low at the fuse intersection…I temp installed the tips and noticed that the ailerons were a little low in relation to the tips…I looked at the the transition of the ailerons and how they subjectively looked in the transition of the upper and lower surfaces of the wings..the lower surface should have looked almost flat but it wasn’t..so…I aligned the aileron to what I felt was the appropriate trail position without regard to the jig..when I did that the flap nestled up to the fuse perfectly and the tip matched the aileron like it should…I put a couple bolts in the rib alignment holes and ran a string out to the rear edge of the aileron…it was off by ½ inch or so…so….i think , in my case , the alignment hole(s) were not in the proper place to be used as reference points…
Had I proceded as instructed , both ailerons would hav been deflected, the tips wouldn’t fit and the flap intersection would have looked pretty bad..also, our kit is qb and the tips are epoxy resin..
From: owner-rv8-list-server(at)matronics.com [mailto:owner-rv8-list-server(at)matronics.com] On Behalf Of Speedy11(at)aol.com
Sent: Saturday, July 11, 2009 11:13 AM
To: rv8-list(at)matronics.com
Subject: Re: Wing Tip Installation - Droopy Right
Matt,
I have a similar problem except that mine are both off my about 1/2 inch. But my tip are the old style and about 8 years old. I decided to go ahead a fly it and see how it handles and then attack the problem once I've talked to others.
It flies great! I'm not sure I'll change anything.
Let us know on the forum if you find an answer.
Stan Sutterfield
1.0 Hrs
| Quote: |
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. |
Summer concert season is here! Find your favorite artists on tour at TourTracker.com.
| Quote: | | http://www.matronics.com/Navigator?RV8-List |
0123456789
[quote][b]
| | - The Matronics RV8-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV8-List |
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