Hangar 9 P-40B Warhawk 50 ARF Assembly Manual page 10

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19. Use four 2mm x 10mm washer head screws and a
#1 Phillips screwdriver to secure the cover to the wing.
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20. Use a ruler and a felt-tipped pen to make a small
mark on the aileron used for positioning the aileron control
horn. Align the ruler so it is resting against the outside edge of
the servo horn and is 90-degrees to the aileron hinge line.
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21. Use a hobby knife with a #11 blade to remove the
backplate from the control horn. Center the control horn
on the mark made in the previous step. Set the front edge
of the horn back 3/32-inch (2.5mm) from the edge of the
bevel to guarantee the horn is positioned on the hardwood
block located in the aileron. Use a felt-tipped pen to mark the
locations for the three mounting screws on the aileron.
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22. Place a 1/16-inch (1.5mm) drill bit in the drill.
Wrap a piece of tape around the drill bit 5/16-inch (8mm)
from the end of the drill bit to prevent accidentally drilling
through the top of the aileron.
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23. Use a drill and a 1/16-inch (1.5mm) drill bit
to drill the holes for the control horn mounting screws.
Use a #1 Phillips screwdriver to run a 2mm x 10mm
wood screw in each of the holes. Make sure to remove
the screw before proceeding to the next step. Apply 1–2
drops of thin CA in each of the holes that will accept the
servo cover mounting screws.
Hangar 9 P-40B Warhawk 50 ARF