Mountain Models C-180, Руководство по сборке, Страница: 17 / 17

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! Cut two pieces of .025” music wire 1.25” long. Measure in ¼” and make a 90 degree bend.
! Take one of the music wires and insert the short end in the rudder control horn.
! Slide the other end of the wire into the heat shrink and heat the heat shrink. You will adjust the
length so that the rudder points straight back. Use a drop of thin CA on the heat shrink to prevent
the pushrods from slipping in the heat shrink.
! Do the same for the elevator control horn.
Final Assembly
! Mount the receiver underneath the servos with Velcro.
!
Push the motor onto the motor mount while supporting the mount from behind. Reach in through
the cockpit to do this.
! Set your servo throws to give you +-1” of rudder and +- 5/8” of elevator. Check that the controls
don’t interfere with each other.
! This is most important: You must give the wing at least ¼” of washout. Working slowly, heat
the covering with a heat gun and twist the tip of the wing so that the back of the wing comes up.
Holding the twist, let the wing cool and check the washout. Repeat until you have ¼” – 3/8”
washout and both sides are even.
Flying
Attach a battery to the Velcro strip on the wing inside the fuselage. Check that none of the control
surfaces are binding and that everything, including the battery, is secure.
Before you fly the 180, check that the control surfaces move the correct directions. Always check the
directions while you are behind the airplane. I highly recommend that you check the control surfaces
before EVERY takeoff.
Check the center of gravity (CG) carefully. It should be under the wing spar. With the battery installed,
place a finger on each side of the fuselage under the spar and lift the airplane. It should balance there. If
not, adjust the battery forward or backwards till the CG is correct.
Adjust your radio trim so that the elevator and rudder are straight back.
For your first flight, be patient and wait for a calm day. Choose a large field where you have a smooth
surface to use as a runway. Set the plane down pointing away from you. I would say to point it into the
wind but it’s a calm day, right? If everything goes well, applying full power will result in a short rollout
and a gentle climb. Initiate turns slowly until you get used to the way the airplane flies.
Happy flying.