.
WING CONSTRUCTION
58.
Remove the ribs from the die-cut sheets. Stack the W-l ribs together in one stack, and the W-2 ribs together in another
stack. Use a sanding block to sand the ribs even. Do not oversand.
59.
Pin the 3/16" square balsa bottom main spar in place over the plans.
60.
Glue and pin the W-l and W-2 ribs in place on the balsa bottom main spar. Use a triangle to square the ribs.
61.
Glue and pin the 1/8" square balsa rear spar in place on the back of the ribs. Glue only to the back of the rib, not to the jig
tab which will be removed later.
62.
Glue and pin the 3/16" square balsa top main spar in the rib notches.
63.
Glue and pin the 1/4" square balsa leading edge in place on the fronts of the ribs.
64.
Glue and pin 1/8" square balsa top front spar into the rib notches.
65.
Bevel the 1/8" square rear spar at an angle even with the top line of the ribs.
66.
Spread a coat of glue on the 1/8" square rear spar and on the areas of the ribs that are to accept the trailing edge top
sheeting.
67.
Pin down the 1/16" x 1" trailing edge top sheeting.
68.
Remove the wing from the plan, turn it over and glue and pin the l/8" square bottom front spar in the rib notches.
Page 9 of 14
Sig Hummer SIGRC50 Instruction Manual
