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Search
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6/8/06
Fluted
More Leading Edge Ribs - Fluting is a pretty
straight forward process, but I do it a little different
that what is explained in the plans. I use Avery Vise-Grip
fluting pliers to make the flutes and along with my
hand seamers I also use a pair of large lineman's pliers
for straightening the flanges. I use the linemans pliers
almost exclusively on the leading edge ribs. The plier
jaws fit nicely between the flutes and it is much easier
to bend the flanges on the curved portions of the leading
edge ribs. They work very nicely for me. The duct tape
prevents scratches as the jaws are knurled.
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6/8/06
Fluted
More Leading Edge Ribs - The
first thing I do in the process is flute the rib until
the web is relatively flat. This is done before any
of the flanges are bent. I then bend the flanges "slightly"
past 90 degrees. Bending the flanges causes the rib
to warp back toward the original shape, so I come back
and flute until the rib is nice and flat (the flanges
will come back to 90 degrees as you flute). I then
place the rib on a nice flat surface as shown in the
picture and with the flange flat on the surface I
check the
spar attach
holes to make sure they are vertical. This
is done by eye and works well. I don't use a square
to
check
the angle.
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6/8/06
Fluted
More Leading Edge Ribs - This
is the finished product. Nice and flat. I make
sure the flanges are at 90 degrees to the web
or just short of that (under bent) by a degree
or two. When working on the empennage I found
that they will pull in nicely if slightly under
bent, but if they are over bent you have to pull
everything back apart and bend them back. I'm
speaking from experience. This is what I found
works for me. With some practice I am pretty
good at eyeballing them. At this point I have
5 of the W709L ribs fluted and 3 of the W709R
ribs fluted.
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