APC EP Zero ARF Instruction Manual download pdf (Page 27)

Radio Control

1) I will have completed a successful radio equipment ground

check before the first flight of a new or repaired model.

2) I will not fly my model aircraft in the presence of spectators

until I become a qualified flier, unless assisted by an

experienced helper.

3) At all flying sites a straight or curved line(s) must be

established in front of which all flying takes place with the

other side for spectators. Only personnel involved with flying

the aircraft are allowed at or in the front of the flight line.

Intentional flying behind the flight line is prohibited.

4) I will operate my model using only radio control frequencies

currently allowed by the Federal Communications Commission.

5) I will not knowingly operate my model within three

miles of any pre-existing flying site except in accordance

with the frequency sharing agreement listed [in the

complete AMA Safety Code].

9) Under no circumstances may a pilot or other person

touch a powered model in flight; nor should any part of the

model other than the landing gear, intentionally touch

the ground, except while landing.

CHECK LIST

During the last few moments of preparation your mind may

be elsewhere anticipating the excitement of the ﬁ rst ﬂ ight.

Because of this, you may be more likely to overlook certain

checks and procedures that should be performed before

the model is ﬂ own. To help avoid this, a check list is provided

to make sure these important areas are not overlooked.

Many are covered in the instruction manual, so where

appropriate, refer to the manual for complete instructions.

Be sure to check the items off as they are completed.

❏

1. Check the motor for secure attachment.

❏

2. Check the cowl for secure attachment.

❏

3. Balance your propeller (and spare propellers).

❏

4. Tighten the propeller nut and check to make sure that a

prop washer is in place.

❏

5. Rotate the propeller a full turn. Check for free rotation

of the prop. Make sure that the dummy engine does not

interfere with rotation.

❏

6. Check the wheels for free rotation, the axles and landing

gear for security, and add a drop of light machine oil to the

axles.

❏

7. Make sure all hinges are securely glued in place.

❏

8. Check the control horns for secure attachment to the

control surfaces.

❏

9. Pull/push on each of the pushrods and check to see that

the adjustable pushrod connectors do not slip.

❏

10. Check the servo arms for secure attachment and make

sure that the arm screws are in place and are tight.

❏

11. Reinforce holes for wood screws with thin CA where

appropriate (servo mounting screws, etc.).

❏

12. Check that all servo connectors are fully plugged into

their respective channels on the receiver.

❏

13. Make sure any servo extension cords you may have

used do not interfere with other systems (servo arms,

pushrods, etc.).

❏

14. Check the receiver for secure attachment. This must

not be “stuffed into place.”

❏

15. Balance your model laterally as explained in the

instructions.

❏

16. Check the C.G. according to the measurements

provided in the manual.

❏

17. Place your name, address, AMA number and telephone

number on or inside your model.

❏

18. Fully charge your transmitter battery and check the

battery voltage after it is charged.

❏

19. Range-check your radio at the flying field.

❏

20. Confirm that all controls operate in the correct direction

and the throws are set up according to the manual.

❏

21. If you wish to photograph your model, do so before

your first flight.

FLYING

CAUTION (THIS APPLIES TO ALL R/C AIRPLANES): If,

while flying, you notice an alarming or unusual sound such

as a low-pitched “buzz,” this may indicate control surface

flutter. Flutter occurs when a control surface (such as an

aileron or elevator) or a flying surface (such as a wing or

stab) rapidly vibrates up and down (thus causing the noise).

In extreme cases, if not detected immediately, flutter can

actually cause the control surface to detach or the flying

surface to fail, thus causing loss of control followed by

an impending crash. The best thing to do when flutter is

detected is to slow the model immediately by reducing

power, then land as soon as safely possible. Identify which

surface fluttered (so the problem may be resolved) by

checking all the servo grommets for deterioration or signs of

vibration. Make certain all pushrod linkages are secure and

free of play. If it fluttered once, under similar circumstances

it will probably flutter again unless the problem is fixed.

Some things which can cause flutter are; Excessive hinge

gap; Not mounting control horns solidly; Poor fit of clevis

pin in horn; Side-play of wire pushrods caused by large

bends; Excessive free play in servo gears; Insecure servo

mounting; and one of the most prevalent causes of flutter;

Flying an overpowered model at excessive speeds.

Takeoff

The goals of your first flight should be to trim the airplane

Before you get ready to takeoff, see how the model handles

on the ground by doing a few practice runs at low speeds on

the runway. Hold “up” elevator to keep the tail wheel on the

ground. If necessary, adjust the tail wheel so the model will

roll straight down the runway.

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APC EP Zero ARF Instruction Manual Page 27

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