Today's Message Index:
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1. 01:09 AM - Flap alignment problems - tip (Vince-Himsl)
2. 02:06 AM - LED-xpak position lights and Van's wing tip position light extensions (Vince-Himsl)
Message 1
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| Subject: | Flap alignment problems - tip |
Hello,
If you are encountering alignment problems in mounting you flaps; like an
unacceptable gap between wing skin and flap, and or the rolled flap top skin
is hitting the flap brace before flap is in trail, I suggest the following:
Inspect the top skin, flap brace, flap hinge intersection and make sure that
you have the hinge on the bottom (or where your plans say it should be) with
the brace sandwiched between the hinge and the top skin. For some reason, I
had sandwiched the hinge between the brace and top skin on my right wing
causing the above problems.
I mention this because you most likely won't catch this when you are
measuring to find out what went wrong. This will lead you to the archives
where I 'gleaned' that the flap prematurely contacting the flap brace is a
'common problem' and the fix is to notch the rolled flap top skin. I wonder
how many of those 'common problems' were the result of a misplaced hinge?
Anyway, the fix is 'relatively' simple. Remove the rivets, reposition the
hinge to the bottom and rivet back in place. In my case the gap is gone and
the flap is in trail when the rolled skin contacts the brace. If not in your
case, you will probably need to add a little more 'roll' to the flap skin. I
used flush rivets where the flap brace steps up on the spar. I also took
this opportunity to drill a pin hole in the aileron mounting bracket to
facilitate removal and insertion of the flaps when the wing is mounted to
the fuselage.
BTW, don't toss the internal cutouts when you make your templates for the
holding the flaps/ailerons in trail. They work great later inside the wing
ends for a quick alignment check and also for inserting (or tracing onto 1"
foam and inserting those) into the wing tips to give them body while you
drill and clecoe..
Regards,
Vince H.
Idaho
RV8 - N8432 (reserved)
The fuselage is at the hanger. I am finishing up wingtips (now that flap
problem is solved), submitting FAA paperwork, and emailing the list when I
should be in bed.
Message 2
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| Subject: | LED-xpak position lights and Van's wing tip position light extensions |
Hello,
I purchased the LED-Xpak position/strobe light system through ACS. I have
the old style flat top wing tips.
I also purchased the A600 fiber glass wingtip extensions from Van's. I knew
they were specifically for the Whelen system and that they would most likely
have to be modified to fit the xpak housings.
Sure enough, the LED-Xpak housing is longer and narrower so you will have to
do some filling in at the ends using micro balloons. You will also have to
sand the side of the mounting area. This requires some glass layups on the
inside of the mount. The housing requires nuts for mounting so for reasons
of access, you will have to use the plate nut installation option on the
wing tips.
The Xpak housing does mount nicely to the A600 'Whelen' pad so the extra
layup is to cover the extra length. This is cosmetic not structural, hence
the micro balloons. The fiber glass layups on the inside are to prevent
break through when you sand the side to match the more narrow xpak housing.
I spent about four to five hours total modifying the Whelen wingtip
extensions to fit the xpak housings. I like the look so the extra effort was
worth it too me.
Why the xpak system? Simple, I refuse to spend seven or eight hundred
dollars (more for the Whelen LED system) for 4 light bulbs and a flash.
Regards,
Vince H.
Idaho
RV8 - Glacier Built
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