Great Planes PT-60 Kit - GPMA0119 - Manual (Page 24)

A Put the R-1 rib assembly in position between the
spars and the LE of one wing panel Draw two lines on
the end of the LE to match the spacing and angle of the
slot in the R-1 ribs.
B Wrap a piece of 150-grit sandpaper around one of the
5/16" dowels included in this kit, then sand half the
diameter of the dowel hole in the end of the LE.
C. Repeat steps A and B for the other wing panel.
Refer to this photo when doing steps 6-9
D 6. Mix about 1/4 ounce of 30-minute epoxy Coat one
side of a dihedral brace with epoxy, then install it between
the spars, against one side of a web The centerline you
drew should be even with the edges of the spars and web.
Repeat for the other dihedral brace on the opposite side of
the web.
D 7 Coat one side of a spar joiner with epoxy, then slide it
into place Once again the centerline should be aligned with
the ends of the spars Install the other spar joiner in the
same manner Clamp the spar joiners in position and
recheck the alignment.
D 8. Coat one half of one side of the LE and TE joiners,
then clamp them in position to the inside of the LE and TE.
D 9 Apply epoxy to the front, bottom and rear edges of
the front center rib assembly, R 1 Insert it between the two
3/16" spars over the sheeting Be sure that it is centered so
that it will overlap the other wing panel's sheeting.
D 5. You will need several small C-clamps (or modeling
clamps) and a few clothespins for the next few steps Clear
a space long enough to accommodate the soon to be
joined wing.
IMPORTANT: Dry fit the entire joiner assembly before
actually repeating the operation with epoxy. Test fit the
clamps and clothespins so you will know where to
put them.
D 10 Apply epoxy to the inside ends of the spars and also
the LE and TE Carefully slide the second wing panel all the
way into position Raise one tip 6-1/2" (4" for the sport
wing) and support it on books while you clamp the wing
panels together Check to make sure that the LE and TE
are aligned, then pin them to each other to hold their
position Check the bottom of the wing to be sure that the
bottom sheeting matches.
D 11 Clean off any epoxy "messes" with a paper towel
moistened with rubbing alcohol before it has a chance to
cure Even though it can be handled sooner, it's best to let
the wing cure overnight before removing the clamps
and weights.
Remember, the bottom sheeting should still only be
tack glued in position.
Here's your chance to get some sleep, so rest while you
can There s still lots more to do !
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