I tried a different approach to building wing sets that makes
doing outer wing panels fast and almost painless.
my idea was to get them out of the way early in the project.
I found when I built my KR1 that building the outer wing panels
on the aircraft was awkward and the space needed to build
full planform was hard to find here north of the 49th.
If you've already installed your center spars in the boat
you are already past this point.
what I did is precision install my center section wing spar sets
on a rectangular upright jig made from angle iron with another
rectangular section added on a 90 degree plain to the first to
be able to roll the jig into 4 positions in order to be able to
position the assembly upright, leading edge up, bottom up
or trailing edge up. Using a lazer and AS5046 templates
I set my spar sets up full span and installed my ribs with
complete accuracy.
Using a half way rib I used polystyrene foam and hot wire
shaped them to the installed airfoil .templates.I installed
the center template because you get too much wire drag
past 60 inches on the hot wire.
Being able to turn the wing over easily made glassing the
panels a snap.I left the 48 inch butt rib on to be able to
maintain alignment when I install the ailerons.
When I set up the jig I configured being able to accommodate
the fuselage as the jig retains proper alignment of the center spar
set to the outer wing panels .The spars are fastened into the
fuselage retained in the jig.
The outer wing panels are the worst part of the project ,
it's nice to have them out of the way first.
Don Chisholm chizmsupholst...@rogers.com
