4Avoid loose screws. Losing a wheel during flight is not a good thing and can lead to damage when you land. With the Crusader
II, the wheels are held in place with long axle bolts, which
are secured to the landing gear with locknuts. Be sure
to tighten the nuts properly, and make sure the wheels
turn freely. For wheels that are held in place on the axles
with lock collars and setscrews, be sure to apply a small
drop of thread-lock to the threads before the items are
screwed into place.
5set up the servos. It is important to center and adjust the pushrods inside the airplane to position the control surfaces to their neutral positions when the radio sticks are in their center positions. You do this by first loosening the
connectors on the servo arms and then switching on the transmitter and the receiver; you
power the receiver by plugging in the flight battery pack.
For safety, be sure to first remove the propeller from the motor and move the throttle
stick all the way to the off/down position before powering up the receiver. With the
receiver powered up, the aileron, rudder, and elevator servos will go to their neutral
positions. With the connectors loosened, you can then move the control surfaces to their
centered positions; then retighten the connectors and check the movement of the control
surfaces. The movement should be equal in either direction of the surface deflection.
Also check to make sure the surfaces move in the correct directions relative to the
transmitter stick movement. Position the model so that the tail is pointing toward you, and
have the radio antenna pointing toward the model. When you move the right stick (aileron
control), the aileron on the right side of the wing should move up and the left aileron should
move down; the reverse should happen when you move the right stick to the left (left
aileron up, right aileron down). When you pull the right stick back toward you, the elevator
should move up, and it should move down when you push the stick forward. When you
move the left radio stick to the right, the rudder should move to the right and the nose
wheel should also steer to the right; the opposite should happen when you push the left
stick to the left. If any of the controls move in the wrong direction, use the transmitter’s
servo-reversing switch to reverse the servo direction.
When you push the left radio stick forward, the motor should start running in a
counterclockwise rotation when viewed from the front. With all these checks complete,
unplug the flight battery and switch off the transmitter.
If you are using a more advanced transmitter with computer programming,
you can set up dual rates for each of your primary controls. Dual rates allow you to set
two—and sometimes three—different amounts of travel for each control, and you can
select these during flight by using the dual-rate switch. Adjusted by percentages, use your
instructions to find the recommended control throws for each control, and set that amount
as the 100% position; use 50% to 60% for your low-rate setting. After flying your model a
couple of times, you can adjust the travel amounts to suit your preferences.
10 Tips for a Be TTer-flying airplane