WING ASSEMBLY, PART V: Fitting the Wing to the Fuselage
For the following steps you will need these parts:
•
The wing assembly
•
1 - Fuselage
•
1 - Plywood Wing Bolt Plate
•
2 - 1/4-20 x 1-1/2" Nylon Wing Bolts
•
2 - Fiberglass Wing Bolt Guides
•
1 - Fuselage Bottom Fairing
❑
1) Trial fit the wing in place on the fuselage, using the two
1/4-20 x 1-1/2" Nylon Wing Bolts provided. The nylon wing bolts
should pass freely thru the holes near the trailing edge of the wing
and thread into the blind nuts that are pre-installed in the fuselage.
Do not overtighten the bolts - just snug them up enough to hold the
wing in place for the next step.
Note: If you have any difficulty mounting the wing to the fuselage,
find the cause of any binding now, and fix it before proceeding.
❑
2) Set the Fuselage Bottom Fairing in place on the bottom of the
wing. Align it with the fuselage. Use a felt-tip pen to mark the
location of the bottom fairing on the wing surface. Mark both sides.
Then remove the fairing and the wing from the fuselage.
❑
3) Remove the covering material from the bottom of the wing
between the marked lines. Start by using a sharp hobby knife to
cut through the covering material along the marked lines. Be very
careful to cut the covering material only - not the balsa wood
structure underneath! Once you've cut through the covering
material, peel the unwanted covering off the wing.
the control horn should be lined up with the line you drew in the
previous step. Once you have the horn properly located, mark the
location of the two control horn mounting holes onto the aileron.
Drill a 1/16" dia. hole completely through the aileron at each mark.
❑
3) Mount the control horn in place using the Nylon Retainer
Plate on the top side of the aileron and two M2 x 15mm Phillips-
Head Bolts.
❑
4) Repeat the last three steps to mount a control horn on the
other aileron.
❑
5) Note that the Wire Aileron pushrods have threads and an
adjustable R/C Link on one end, and a pre-formed "z-bend" on the
other end.
a) Install the z-bend end of the pushrod into the outer hole of
the aileron servo output arm. Note: The hole in the servo output
arm may be a little too tight. If necessary, drill out the holes in the
arm with a 5/64" dia. or #50 (.070") drill bit.
b) Install the servo arm and pushrod onto the servo, making
sure it is accurately centered in neutral position.
c) Clip the R/C Link into the control horn. Check the aileron for
neutral position, adjusting the overall length of the pushrod by
screwing the R/C Link in or out as needed to get the aileron in
neutral position when the servo is in neutral position.
Note: Because of the thickness of the MAYHEM airfoil, it is not
easy to determine exactly when the aileron is in neutral position.
For this reason we have supplied an Aileron Positioning Guide
(APG). Cut out the APG and use it to hold the aileron in true
neutral position when making your pushrod length adjustments.
SAFETY NOTE: Cut and fit a short length (about 3/16" or so) of
medium diameter fuel tubing (not furnished) onto the R/C Link to
prevent it from opening and coming off the control horn in flight.
6