R/C Basics
Most Important
The
single most important aspect of learning to fly rc
planes is getting an instructor. An instructor
does not have to be certified to any particular
standard but must be a competent experienced R/C
pilot who is capable of giving instructions with
patience. Many people think that flying RC planes
is easy enough that it can be learned without an
instructor and many have succeeded... but more
often than not at a great expense. Many have
become frustrated and disillusioned because of a
crash on the first flight and never tried again.
This point cannot be stressed enough that flying
rc planes is much more difficult than it may seem.
Without an instructor to correct mistakes, a crash
is probably inevitable. You must consider also
that it is not only the cost of replacing your
model, but for the safety of others. Model
airplanes and helicopters are not toys, and can do
serious bodily harm or death. Having mentioned
crashing, it is important for you to understand
that you WILL crash sooner or later. Crashing is
part of flying. The reasons you crash can be
fitted into two basic categories. 1) Anyone can
crash if they have equipment failure. 2) New and
advanced fliers alike sometimes crash when they
push the limits of their abilities beyond what
they can handle. With a new pilot, something as
simple as flying toward yourself can be beyond
your abilities and can cause a crash if an
instructor is not monitoring. However, also
remember that pushing the envelope is the only way
we can learn new things. At any rate, you must be
able to accept crashes and the expense of repairs
or this probably isn't a hobby that you will
enjoy.
There are two ways that an
instructor can help a beginner learn to fly an rc
plane. One way is for the instructor to begin by
taking off and turning the transmitter over to the
student. When the student has a problem, the
instructor takes the transmitter back and takes
control of the model. There is a "dead time" that
neither the student nor the instructor has control
of the model. This can be enough time for the rc
planes to crash. The other option is to connect
two transmitters together so that the instructor
can take control of the model any time that he
feels that the student is in trouble. This is the
reason that the student should match his radio
system to that of the instructor.
Please
remember, when you ask someone to be your
instructor or to test fly a new model, you have
TOTALLY released that person from any
responsibility for your model. If it crashes for
ANY reason, you as the asking party are
responsible for the costs of repair or
replacement. The other half of this disclaimer is
this; If you ask someone to let you fly their
aircraft, then YOU become liable for any crash
that might occur. In other words, the ASKING PARTY
is ALWAYS responsible for repair costs. Without
this being agreed to, it would be very difficult
to find anyone willing to help new pilots. Also,
you can not expect an instructor to comply with
your schedule. You must work with that person and
reschedule your time so that you will be at the
flying field when he is available. For these and
other reasons, you must select your instructor
carefully.
The best instructor might not be
the person that can wow everyone with his flying
skills, but is someone with enough skill to save
your plane when you get in trouble, who is
patient, who has teaching skills, and probably
most important someone who WANTS to help you. If
you ask someone for help and they refuse, don't
take it personally. Most people know what they are
capable of and what they are willing to do. Find
someone else who is capable AND willing.
If
you are interested in learning to fly a model
helicopter you don't need an "instructor" in the
commonly understood definition of the word.
Instead you need someone who can set up your
helicopter to fly as a trainer. From there you are
more or less on your own until you have learned
how to hover. After this has been achieved, the
heli will have to be set up for forward flight and
auto rotation. Once again, ask someone to help
with these setup changes. Over the years, we have
found that trying to teach helicopter flying with
a buddy box is not really feasible. There are just
too many settings that must match on both
transmitters, and it is almost impossible for the
instructor to stay in sync with the helicopter
when someone else is flying it. Ask a helicopter
pilot to help you with setup. You will find that
almost all heli fliers are willing to do so. After
setup, you will need a set of training gear and
lots of patience. Don't hesitate to ask any
questions that may come up. Practice is the key to
learning. Just attempt to keep it level, within 20
feet of where you want it to be, and no more than
2 feet off the ground. Helicopter hovering and 3d
flying is done on the northwest corner of the
facility away from the runway and airplane fliers.
If you start drifting toward the flight line,
runway, or pit area shut it down and carry it to a
safe area. Helicopters seem to crash more often
than airplanes because the pilot has more things
to keep under control, so out of control flight
happens more often. Helicopter crashes usually
cost more to repair than do airplane crashes. Keep
this in mind when deciding if you want to give it
a try.
Choosing a radio
The first consideration is that either your
equipment should be compatible with your
instructors, for buddy box applications,
or you need to buy a
dedicated buddy box. The next consideration is to
make sure your radio will be one you can use for
several years while progressing to more advanced
types of aircraft. While it may be possible to
economize with other equipment, the radio is one
item where you should not cut corners. Remember
the old saying "You get what you pay for.". This
is certainly true with R/C equipment. If you start
with a bare minimum radio just to see if you will
like the hobby, you may not be able to sell it if
you either decide to move up to one with more
capabilities, or if you quit flying. A system with
programmable functions makes flying much more
enjoyable with high performance aerobatic
aircraft, and even though you don't think you will
be moving up to them in the near future it is much
easier to do so with a good radio when the time
comes. A new type of system has just become
available that eliminates one of the nightmares of
flying. As we mentioned earlier one must make
certain that no one else is flying on his
frequency before turning the radio on. With the
new Spread Spectrum systems, this is no longer a
problem. The transmitter, after being turned on,
searches for an open frequency. When one is found
it locks onto this channel and turns on the
transmitter power. You then turn on the receiver
and it finds it's matching transmitter. I HIGHLY
recommend these radios for beginners and sport
fliers as well. Buddy boxes are available for a
minimal cost.
Choosing a trainer airplane
You will find varied opinions on this
subject, each with it's merits. In my humble
opinion, there has never been a better trainer
than the venerable old Ugly Stik 40.
It is relatively
cheap and easy to build. It is very forgiving when
being mistreated by it's pilot. Landings are so
easy that they make even an unskilled pilot look
good. After you advance to mild aerobatics it will
perform them with ease. Inverted flight is no
problem. It can be built as either a tail dragger
or with a nose wheel. Nose wheel landing gear is
recommended for beginners. Some dealers sell
trainer packages that includes almost everything
you need to start flying. While these are good
products and make it a lot quicker to get in the
air, the radio and airplane are usually only good
for training. With flat bottom wings, the
airplanes will not perform even basic aerobatics
well. The radios usually have only 4 channels
so you will have to buy a more capable one to move
up to airplanes with better performance. Stay away
from scale aircraft during the initial training
phase. They are usually too heavy for their wing
size and we tend to form an imotional attachment
to them that makes it more painful in the event of
a crash.
Airplane control surfaces
While setting up your airplane,
you have to know which control surface does what.
An
aircraft maintains control in flight with its
control surfaces (see the illustration with its
colorcoded control surfaces). These are:
The Ailerons control Roll.
The ailerons are controlled with the right
transmitter stick. Moving this stick to the
left moves the left aileron up, and the right
aileron down. The change in airflow causes the
airplane to roll to the left. Just the opposite is
true when the stick is moved to the
right.
The Elevators control
Pitch. The elevators are also controlled with the
right transmitter stick. Pulling this stick back
moves the elevators up. The change in airflow
causes the tail to go down, and the nose to go up.
Pushing the elevator stick away results in the
opposite to happen.
The Rudder controls
Yaw. The rudder is controlled with the left
stick. Moving the left stick to the left moves the
rudder to the left. This will cause the nose to go
to the left. And of course, moving the stick
to the right moves the nose to the
right. While in the training phase, the only
time you will have to use the rudder is while
taxing, taking off, and landing. It will not be
used in flight until you begin flying aerobatics.
The Flaps are usually not used on
model aircraft. Their puspose is to add
drag and/or lift. This is useful during takeoff
and landing.
Moving the left
stick away from you will advance the throttle and
increase power, and pulling it toward you will
reduce the throttle and
power.
Choosing a trainer
helicopter
The best place to start with
helicopters is with something in the 550mm to
600mm size. The smaller electric helis (450mm and
smaller) are to unstable to be used as a trainer.
An excellent first helicopter is the Raptor
30. Parts are available at almost all hobby
dealers (you WILL need spare parts when learning
to fly a helicopter). They can be set up to fly as
a trainer, and when the time comes to move up,
there are upgrades available that will make them
perform any stunt possible. If you want to go
electric, the Raptor 550 / 620 or T-Rex 600 are
good choices.
Choosing a power plant
As with the radio
equipment, don't pinch pennies when it comes to
buying your power plant. Don't buy one of the
cheaper
"knock off" brands just because it will
save you $20.00 or $30.00. You might find yourself
spending more time trying to tune the engine than
you do flying. Look around at what everyone else
is using and make an educated decision based on
what you observe.
Support equipment
First, you will need some way to
get the fuel into your aircraft fuel tank. There
are numerous ways to accomplish this task. The
simplest is the hand cranked fuel pump. If you
prefer, electric powered pumps are also available.
Along with the pump you will need 2 lengths
of fuel tubing. One
is dropped in the fuel jug and
the other connected to the fuel tank. The glow
plug requires 1.5 volts of DC power. A simple
lantern battery can be used, but it is much more
convenient to use a dedicated glow
driver. One example is a decive that
clips onto the glow plug and contains a NiCd
rechargeable battery. Another type uses a power
panel that takes 12 volts DC from a storage
battery and regulates it down to 1.5 volts. An
electric starter is not absolutely necessary but
is safer and more convenient than flipping the
propeller manually. Using your finger to spin the
propeller is not recommended. If you do not use a
starter, the handle of a screwdriver or dedicated
"chicken stick" is much safer. Bring extra glow
plugs and tools. Field chargers for your batteries
are needed if you plan on flying more than a few
times each time out.
Other things to remember before flying
Sea Bee park is owned by the
City of Abilene, and the city requires that
everyone using the facility have liability
insurance. The easiest way to meet this
requirement is to join the Academy of Model Aeronautics
(AMA). Proof of this
insurance will be required before flying. There is
a 3 month trial membership available for those who may not want to
commit for a full year.
Children and pets are not allowed
on the flight line, taxi ways, or pit
areas. This is for their own safety. We
welcome your family at any time but please inform
them to stay behind the fence while
watching.
DO NOT turn your transmitter on
until you have made absolutely sure no one else is
flying on the same frequency. If, after checking
the frequency control board, you find there is
another pilot on your channel, let them know you
will be sharing the channel. This will make a
"shoot down" less likely. The best policy is
to let your instructor turn it on.
Make sure your batteries are fully
charged, not only the transmitter and receiver but
also the starter and glow driver.
Bring all of your support
equipment and fuel.
Simulators
Learning to fly
both airplanes and helicopters is greatly aided by
the use of a flight simulator. Find one that will
work with your equipment and practice, practice,
practice.