RCUniverse.com Review of Maxford Gee Bee Y Scale 40" Electric AFR
it's not all that uncommon - You were coming in
for a landing and clipped a tree, or a pole, or
some other obstacle and now your wing has a nasty
gash in the leading edge complete with a few broken
rib-fronts. Now you're wondering what to do.
panic! This is a much easier repair than most people
think. This tutorial will walk you through the major
pints of the process to help you get your baby flying
first thing you'll need to do is to remove as much
covering as you need to so that you can see all
of the damage. The diagrams show no covering at
all just for the sake of clarity. You don't need
to remove it all, but make sure to remove enough
to give yourself room to work.
inspect the damaged area thoroughly. Pay particular
attention to the spars and make sure there are no
breaks or cracks. If there are, you will need to
glue them, or even apply some plywood doublers depending
on how severe the damage is. Fortunately, in most
of the repairs of this type that I have seen, the
spars survive untouched, or with only a few minor
dings or scratches which can be easily ignored.
If they look damaged and you're unsure as to the
severity, have a more experienced modeler check
it out for you.
you're ready to begin, the next thing you'll want
to do is to clean up the broken ends of the leading
edge by cutting and sanding them to a clean end.
You don't need to do the ribs, with the exception
of removing any splinters that might interfere.
a piece of balsa that is the same thickness of the
ribs (on 40 - 60 size planes this is usually 3/32").
Cut it with the grain horizontal so it fits between
the spars and a good section of the leading edge.
the balsa against a good rib-front and use a pen
to trace the shape of the rib to the balsa.
a copy of this new rib-front for each one that needs
replacing. The easy way to do this is to glue them
all together with only a tiny drop of glue and shape
them all at the same time. Then you can break them
apart when you are finished. Glue one copy along
side each broken rib.
cut a block of balsa to fit between the ends of
the leading edge. It would be a good idea to add
some small scraps of plywood or hard balsa behind
the seams for strength.
that's left to do now is to sand the leading edge block
to the same shape as the rest of the leading edge. This
can easily be done with a long sanding bar by working side-to-side,
following the original contour.
ready to re-cover and go flying!
you see, it's not as difficult as you may think. If your
wing has a sheeted leading edge, you can repair the sheeting
following the "How
to Repair Sheeting".