❏
1. With the wing level, have an assistant help you lift the
model by the engine propeller shaft and the bottom of the
fuse under the TE of the fin. Do this several times.
❏
2. If one wing always drops when you lift the model, it means
that side is heavy. Balance the airplane by adding weight to the
other wing tip.
An airplane that has been laterally balanced
will track better in loops and other maneuvers.
No matter if you fly at an AMA sanctioned R/C club site or if you
fly somewhere on your own, you should always have your
name, address, telephone number and AMA number on or
inside your model. It is
required
at all AMA R/C club flying sites
and AMA sanctioned flying events. Fill out the identification tag
on page 19 and place it on or inside your model.
Follow the battery charging instructions that came with your
radio control system to charge the batteries. You should
always charge your transmitter and receiver batteries the
night before you go flying, and at other times as
recommended by the radio manufacturer.
Note:
Checking the condition of your receiver battery pack
is
highly recommended
. All battery packs, whether it’s a
trusty pack you’ve just taken out of another model, or a new
battery pack you just purchased, should be cycled, noting
the discharge capacity. Oftentimes, a weak battery pack can
be identified (and a valuable model saved!) by comparing its
actual capacity to its rated capacity. Refer to the instructions
and recommendations that come with your cycler. If you
don’t own a battery cycler, perhaps you can have a friend
cycle your pack and note the capacity for you.
Carefully balance your propeller and spare propellers before
you fly. An unbalanced prop can be the single most significant
cause of vibration that can damage your model. Not only will
engine mounting screws and bolts loosen, possibly with
disastrous effect, but vibration may also damage your radio
receiver and battery. Vibration can also cause your fuel to foam,
which will, in turn, cause your engine to run hot or quit.
We use a Top Flite Precision Magnetic Prop Balancer
™
(TOPQ5700) in the workshop and keep a Great Planes
Fingertip Prop Balancer (GPMQ5000) in our flight box.
If the engine is new, follow the engine manufacturer’s
instructions to break-in the engine.
After break-in,
confirm that the engine idles reliably, transitions smoothly
and rapidly to full power and maintains full
power–indefinitely. After you run the engine on the model,
inspect the model closely to make sure all screws remained
tight, the hinges are secure, the prop is secure and all
pushrods and connectors are secure.
Ground check the operational range of your radio before the
first flight of the day. With the transmitter antenna collapsed
and the receiver and transmitter on, you should be able to
walk at least 100 feet away from the model and still have
control. Have an assistant stand by your model and, while
you work the controls, tell you what the control surfaces are
doing. Repeat this test
with the engine running
at various
speeds with an assistant holding the model, using hand
signals to show you what is happening. If the control
surfaces do not respond correctly,
do not fly!
Find and
correct the problem first. Look for loose servo connections
or broken wires, corroded wires on old servo connectors,
poor solder joints in your battery pack or a defective cell, or
a damaged receiver crystal from a previous crash.
Range Check
Ground Check
Balance the Propellers
CAUTION:
Unless the instructions that came with your
radio system state differently, the
initial
charge on
new
transmitter and receiver batteries should be done for 15
hours
using the slow-charger that came with the radio
system
. This will “condition” the batteries so that the next
charge may be done using the fast-charger of your
choice. If the initial charge is done with a fast-charger, the
batteries may not reach their full capacity and you may be
flying with batteries that are only partially charged.
Charge the Batteries
Identify Your Model
PREFLIGHT
Balance the Model Laterally
16
