This F2G Corsair was Jim Roselle’s . 15 Carrier entry at the Southwest
Regionals. Jim is from Phoenix.
available when I taught my own kids to fly a quarter century
A modern ARF model may no longer be available only
months after you take delivery. With sufficient demand, a
second production run may take place in a year or more.
Finding an exact replacement for a model you crash, wear out,
or just want to duplicate might not be possible.
For these reasons, I’ll mention particular models I’ve found,
but I’ll concentrate on the research process because those
models are no longer available. Even a model I just finished
might not be available when this article is published.
I start my searches looking for a model that will be near the
44-inch wingspan limit. Because most specifications are in
metric units, that translates to a 1,117mm maximum. Anything
built to exactly 1,100mm will work, but anything slightly
larger will need some wingtip reshaping to keep the model
legal. There are quite a few airplanes in the 1,100mm-size class.
I look for wood construction because it seems to be lighter,
can easily lend itself to modifications, and has readily definable
structural members. Cast foam models look great in photos,
but their structural strength depends on the relatively massive
size of the foam components, resulting in internal dimensions
for such things as the battery, ESC, and motor that can
accommodate only the equipment they were designed for. That
could be inadequate for the larger motor or battery you want
or need to use.
Glow engines are vibration machines. Every turn of the
propeller has a period of acceleration (power stroke) and
deceleration (compression stroke) with some coasting included
in between. Changing torques are transmitted to the aircraft
just as they are applied to the propeller. Electric motors are
smoother and require less structure to deal with vibration.
That’s also why electric propellers can be so much thinner than
Unfortunately, landing forces are just as strong no matter
what power system you use. Our arrested landings include not
only the arresting forces, but also dropping the model on its
gear from a very nose-high attitude. Such forces were not part
of the design analysis of any RC ARF model. You definitely
don’t want to have the arresting hook be the only thing that
stops during the landing. Neither do you want the model to
stop while the engine, battery, or both continue on down the
Mounting a standard two-line bellcrank is relatively easy for
any experienced CL modeler, as is the addition of a leadout
guide to the wing. Wing mounts on an ARF won’t be designed
for the torque applied by the leadout guide. ARF structures
won’t be designed for a pull test and flight loads on the
bellcrank mount, either. Modifying structures for all of these
issues is easier with wood construction.
I’ve found two SNJ models with 44-inch wingspans—one
120 Model Aviation JULY 2016
CONTROL LINE NAVY CARRIER