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rsteele(at)rjsit.com Guest
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Posted: Fri Oct 10, 2008 6:30 pm Post subject: Fiberglass wing tip installation |
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How you go about getting a good fit of the forward (fiberglass) wing
tip on the 601XL? I have a couple for problems. One is how to hold
the tip in place while drilling, as there doesn't seem to be a way to
clamp it. The other is that it looks like I'll have to trim the skin
around the front of the tip to prevent it extending past the curve of
the fiberglass. Is this normal? If I install the tip so that front
of the skin blends smoothly into the tip, there is only about 4mm of
space to rivet the tip. I know this isn't very clear. Trying to come
up with a better description.
Ron
601XL -wings
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bryanmmartin
Joined: 10 Jan 2006 Posts: 1018
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Posted: Fri Oct 10, 2008 7:33 pm Post subject: Fiberglass wing tip installation |
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If you look at the wingtip from a point of view directly in front of
the wing looking straight back, the aluminum should look like it was
sliced off by a plane parallel to the long axis of the fuselage at a
45 degree angle to the vertical. A flat surface held up against the
wing tip should make contact with the cut off end of the spar
extension and the wing skin around its entire circumference. Once you
get to that point, the fiberglass should fit nicely.
The fiberglass parts do have a tendency to sag out of shape after some
time laying on the shelf, so you may have to apply some gentle heat to
them and bend them back into their correct shape. When I did my wing
tips, I shoved the fiberglass parts into the nose of the wing until
there was a minimum of gap and then put a couple of clamps at the rear
of the fairing to hold it in place. Even then, I had to hold the part
tight to the nose skin as I drilled the first few holes in the front
of the part and got some clecos in place.
On Oct 10, 2008, at 10:26 PM, Ronald Steele wrote:
Quote: |
How you go about getting a good fit of the forward (fiberglass) wing
tip on the 601XL? I have a couple for problems. One is how to hold
the tip in place while drilling, as there doesn't seem to be a way
to clamp it. The other is that it looks like I'll have to trim the
skin around the front of the tip to prevent it extending past the
curve of the fiberglass. Is this normal? If I install the tip so
that front of the skin blends smoothly into the tip, there is only
about 4mm of space to rivet the tip. I know this isn't very clear.
Trying to come up with a better description.
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Bryan Martin
N61BM, CH 601 XL,
RAM Subaru, Stratus redrive.
do not archive.
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Bryan Martin
N61BM, CH 601 XL, Stratus Subaru.
do not archive. |
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jaybannist(at)cs.com Guest
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Posted: Sat Oct 11, 2008 5:24 am Post subject: Fiberglass wing tip installation |
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Ron,
I had the same problem. I honestly don't remember how I held the fiberglass in place while drilling. I think I clamped the upper and lower rear corners and just used "by guess and by gosh" to drill the nose. I also had the slight wing skin overhang and gap at the nose. I used SuperFil to fill and smooth it out and make it look purtty. It is really easy to mix, apply and sand to a nice contour. That might not be the "kosher" way, but it worked for me.
This whole wingtip area is awkward from a fitting and fastening standpoint. I could find no way to clamp the upper crimped angle for the wingtip end plate. I was holding it by hand to drill. When the drill bit popped through, my little finger was in the way and I drilled right through the fingernail. Ouch!
Jay in Dallas
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rsteele(at)rjsit.com Guest
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Posted: Sat Oct 11, 2008 6:31 pm Post subject: Fiberglass wing tip installation |
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On a related note, has anyone used nut plates to attach the tips? I'm thinking this would allow access to strobe power supplies. Are there any special requirements for attaching nut plates to fiberglass?
Ron
Quote: | href="http://www.matronics.com/Navigator?Zenith-List">http://www.matronics.com/Navigator?Zenith-List href="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/contribution [/b] | [b]
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tigerrick(at)mindspring.c Guest
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Posted: Sat Oct 11, 2008 6:49 pm Post subject: Fiberglass wing tip installation |
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Y'know, you guys, there's a new combination wingtip position light/strobe assembly from Aveo Engineering that is fully self-contained (requiring no separate power supply). Someone asked me today at the Cloverdale Quality Sport Plane Fly-In how I got to the strobe power supply on my 601, and I said drill out the rivets. Which really is no big deal, except that they're painted.
But I plan to install the Aveo units, as they make the wingtip issue moot. And since they're designed around very high intensity LEDs driven by on board circuitry, they draw peanuts for current. I was actually running around Oshkosh with a prototype, showing various manufacturers the unit and driving it fully with a 9V transistor radio battery.
It was, by far, the coolest thing I saw at the show. A bit pricy at $660 for a pair, but man! How they simplify installation with no further maintenance required!
Rick Lindstrom
N42KP / Corvair
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jaybannist(at)cs.com Guest
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Posted: Sun Oct 12, 2008 5:02 am Post subject: Fiberglass wing tip installation |
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Ron,
I put an access plate in the aluminum wingtip plate. I didn't think it would need to be opened very much, so I riveted it in place.
Jay in Dallas
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naumuk(at)alltel.net Guest
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Posted: Sun Oct 12, 2008 6:49 am Post subject: Fiberglass wing tip installation |
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Ron-
If you plan to use pulled rivets to attach the nutplates on the fiberglass, you'll have to go with the comparatively larger nutplates. #6 or #8 are attached with a small rivet available in only one draw size from Wicks, which is the only outlet I could find and probably not long enough for your application. Expensive little puppies, too.
If you want access, I'd put a plate in the aluminum ala Jay. Just guessing, but I would imagine you'd have less airflow disruption on the bottom of the wing.
This means nothing in your situation, but I went with standard position lights secured with rivnuts for bulb replacement access, and a belly strobe with the flash unit mounted behind the seat.
I'm not familiar with the XL setup, but would it be possible to extend your wiring to allow the flash unit to be mounted inside the cockpit? Might be the best scenario.
Bill
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bryanmmartin
Joined: 10 Jan 2006 Posts: 1018
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Posted: Sun Oct 12, 2008 8:23 am Post subject: Fiberglass wing tip installation |
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My strobe power supplies are mounted to the floor under the seats. I can get to them through the spar bolt access panel.
On Oct 12, 2008, at 8:59 AM, jaybannist(at)cs.com (jaybannist(at)cs.com) wrote:
Quote: | Ron,
I put an access plate in the aluminum wingtip plate. I didn't think it would need to be opened very much, so I riveted it in place.
Jay in Dallas
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Bryan Martin
N61BM, CH 601 XL,
RAM Subaru, Stratus redrive.
do not archive.
[quote][b]
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Bryan Martin
N61BM, CH 601 XL, Stratus Subaru.
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