Balance The Propeller; Ground Check; Range Check; Engine Safety Precautions - Hobbico Dynaflite S.E.5a Instruction Manual

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
Oftentimes, a weak battery pack can be
identified (and a valuable model saved!) by
comparing its actual capacity to its rated
capacity. Refer to
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.

BALANCE THE PROPELLER

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.
the discharge capacity.
the instructions

GROUND CHECK

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.
and

RANGE CHECK

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 [30m] 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.
ENGINE SAFETY
PRECAUTIONS
Failure to follow these safety precautions
may result in severe injury to yourself
and others.
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