The Hero 40 satisfies modelers
with a unique design
How did Joel Cimmono’s three-boom pusher come to have the name of Hero 40? He was at the flying field with his new, unnamed aircraft in the car, glue drying
in the hot sun, when the wife of a fellow flier asked him
if he had finished eating his hero (as a large sandwich on
Italian bread is called in New York).
He explained to her that his airplane was not a sandwich,
but a triple-boom, swept-wing, .40-size pusher where the
booms were part of the fuselage. The friend’s wife looked
at him, laughed, and asked, “Did it have any cheese on it?”
Hence, the name Hero 40 stuck.
Using proven built-up construction techniques, the Hero
40 featured a removable wing that could be made from a
standard, .40-size Kaos wing, with a swept-back LE, and
balsa-sheeted booms that were part of the fuselage and not
the wing. The fuel tank was at the CG, so the trim did not
change as the fuel was used. As a pusher airplane, the Hero
40’s flying surfaces were all in “clean” air. The engine exhaust
was between the booms at the rear of the model, so the
fuselage was kept clean and oil-free.
An interesting part of Joel’s construction article was his
mention of using the Hero 40 as an ideal front-mounted
camera or TV platform. Today it could be used for aerial
photography or FPV.
Joel gave some options for the builder to consider,
including using a 11/4-inch aluminum driveshaft extension
on the engine to place it closer to the CG. He also used
a pull-pull system that crossed over in the compartment
behind the radio receiver to give the correct relation
between the rudder and nose wheel. He chose to use rudder
control, but mentioned that a rudder was not necessary to
fly the airplane.
The Hero 40 was finished by applying two coats of clear
acrylic lacquer to the airframes and sanding between the
coats to make the wood stronger and to allow MonoKote to
better adhere. The wings were yellow and the fuselage red
because those were the colors Joel saw best in the air.
Joel originally used 30-pound-test stainless steel fishing
leader for the rudder pull-pull but had radio interference.
The antenna was moved from the top boom to the wingtip,
and the pull-pull changed to 30-pound-test monofilament.
The K&B . 40 engine was installed along with the fuel tank.
Joel stated that the first flight was a “knee-knocker,” and
“because the mass of the aircraft is concentrated near its
CG, the airplane needs little elevator movement. It will
respond quickly to elevator—3/8 inch up and down is all you
need.” He said although it doesn’t fly differently than other
airplanes, it certainly looks unusual and that the booms
are thin and almost invisible in the air. He also noted that
landings were a joy.
Featured in the February 1996 MA, Hero 40 is listed
as AMA Plans Service number 800 for $24 plus shipping
and handling. AMA members can access the MA Digital
Library on the magazine’s website to read more about this
airplane and its construction. See page 151 or go to www.
modelaircraft.org/plans.aspx for ordering information.
103 Model Aviation DECEMBER 2014