GREAT PLANES Spirit Instruction Manual - Page 11

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Optional Spoilers

Note: Since the spoiler installation is optional, none of the

hardware has been included.

❏ ❏

1. Use a hobby knife to cut a hole in the bottom of the wing

sheeting for the spoiler tubing to exit the wing as shown.

❏ ❏

2. Pull the end of the spoiler tubing out of the wing just far

enough to glue it in place using thick CA.

❏ ❏

3. Cut the covering all around the edge of the spoiler and

remove it from the wing panel.

❏ ❏

4. Tape the spoiler in position in the wing using a strip

of cellophane or vinyl tape or a strip of covering. The tape

should be flexible enough to allow the spoiler to close on its

own. The tape should also be replaced occasionally as it will

eventually rip.

❏ ❏

5. Thread a 42" [1070mm] length of braided fishing

line (not included) through the spoiler tubing in the wing.

❏ ❏

6. Thread one end of the line through the small hole

in the spoiler horn and use a piece of a round toothpick to

hold the line in the horn. Allow about 1/2" [13mm] to hang

out the other side of the horn for fine adjustments. It may be

necessary to drill out the spoiler control horn using a 3/32"

[2.5mm] drill bit. Trim the shear web to allow the toothpick to

pass through without interference.

❏ ❏

7. Glue a small lead weight on the bottom side of the

spoiler to help it close. 1/4 – 1/2 oz. is usually enough since

the airflow will keep the spoilers closed when the plane is

flying. Repeat steps 1 through 7 for the opposite spoiler.

❏

8. Mount the wing onto the fuselage and pull the ends of

the spoiler strings up to the spoiler servo. Position the spoiler

servo horn at the rearward end of its swing and wrap one

spoiler string around the screw in the horn. With the spoilers

held closed, apply a drop of CA to glue the string to itself,

forming a small loop. Remove that string and do the same

steps to the other string. The two strings should be the same