Top Flite TOPA0415 - Manual (Page 33)

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13. Align the front of rib 1B with the aft joiner
brace, using it to set the angle of the rib. Glue 1B to
the aft joiner brace. Glue rib 1A to the forward joiner
brace the same way.
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14. Test fit the die-cut 1/8" plywood wing bolt
plate brace (WBPB) between the ribs 1B and 2B.
Use the die-cut 1/8" plywood dihedral gauge (DG)
to align 1B over the plan and to set it at the correct
angle. Adjust the wing bolt plate brace if necessary,
then glue it into position.
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15. Test fit, then glue the laser-cut 1/8" plywood
forward dowel plate between ribs 1A and 2A the
same as you did the wing bolt plate brace using the
dihedral gauge to align rib 1A with the plan.
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16. Make gussets from leftover 1/8" balsa and
glue them to the forward dowel plate as shown on
the plan.
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17. Drill 1/4" holes through the 1/4" x 2" x 7-3/4"
plywood wing bolt plate where shown on the plan.
Note: Though the holes are not shown in the wing
bolt plate in the following photos, yours should now
be drilled.
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18. Test fit the wing bolt plate in ribs 1 & 2 and
the die-cut 1/8" plywood rib doublers 1C and 2C.
Use 30-minute epoxy to glue the rib doublers to the
ribs, then remove the wing bolt plate before the
epoxy hardens.
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19. Glue the die-cut 1/8" plywood aft dowel
plate (it’s the 1-1/4" disk with a 5/16" hole in the
middle) to the forward spar joiner brace centered on
the 1/16" hole you drilled during preparation.
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20. Make the tip LE from the 3/4" x 3/4" x 8"
balsa stick, then glue it into position on ribs 11 & 12
and the LE.
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21. Use the 3/32" x 4" x 36" balsa sheet you set
aside earlier (and marked “shear web”) to make the
shear webs that fit between ribs 4 through 12 as
shown on the plan. Glue the shear webs into position.
During speed run testing of early production
P-47s, test pilots attained a level flight speed of
over 400 mph.
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