1/4 scale Monocoupe 90A
The original Monocoupe was produced in a number of models from 1931 to around 1940. The
90A was 20’6” long with a 32’ wingspan, it had an empty weight of 940 pounds with a useful
load of 640 pounds. Powered by a 90 horsepower Lampert radial engine, it could reach level
speeds of 130 miles per hour, climb at almost 1000 feet per minute, and had a service ceiling of
15000 feet. It was one of the highest performance civilian aircraft of the golden age, and even
by standards today, the performance would be considered exceptional for the horsepower. The
Monocoupes beautiful lines and wonderful flight characteristics made it a favorite for pilots of
the day and a true collectors item today.
Super Kraft made every effort to retain all the wonderful qualities of the original and we are
sure you will be pleased with the result. The current trend in the RC world is to more power,
we at Super Kraft urge you to resist overpowering this aircraft. We have tested the airframe
with engines from 91 glow to 2.4 gas and here is what we found. The 91 two stroke and 120 four
stroke gave very scale like performance. Take off roll on grass was about 75 feet with out flaps
and about 50 feet with flaps. Normal flight was done at around ¾ throttle, with a shallow dive
needed for round loops at full throttle. The 150 four stroke reduced the take off roll to 30 feet
without flaps and 20 feet with, a good match for the airframe. The 2.4 gas had a take off roll of
about 20 feet without flaps and too short to measure with, however the 20/10 propeller on the
2.4 caused trouble with ground clearance and the thrust at idle was too high to land the plane
with flaps. The additional weight of the 2.4 also caused the need for some ballast added to the
tail. Our favorite engine was the RCS 140 gas {RC Showcase [301 374 2197] rcshowcase.com}.
Using an 18/6 prop the takeoff roll with out flaps was about 30 feet and about 20 feet with.
Landings were easy both with and without flaps, normal flight was at and below ½ throttle,
loops were easy at any speed, and no ballast was needed for balance. Under most conditions this
engine has more power than the aircraft can use, plus the economy, sound and reliable idle that
is making gas so popular.
WARNING!
As model aircraft get larger and more powerful, the risk for injury
increases. KANGKE’s extensive testing procedures insure a high quality kit that has
gone through many steps to provide you with a safe reliable airframe. Nothing we can
do however will make up for poor assembly or irresponsible behavior at the field. A
model this size and weight traveling at 60 MPH contains enough energy that if it were
to contact another person, the injuries would be extensive, possibly fatal. The safe
operation of this model is yours and yours alone. If you are a beginner or have never
flown a model of this size and power, you should
not
make the attempt without the
help of an experienced pilot.
This Manuel is the sole property of Kangke Industrial USA, Inc. Reproducing any part
without the consent of Kangke Industrial USA, Inc. is a lawful violation.
Read each step of the instructions carefully. Be sure you understand what is required and what
the procedure is before you glue or cut anything. How well you assemble this model will have a
direct effect on its flight characteristics.
If you are familiar with the assembly of ARF type aircraft you will find the order of assembly
steps in this manual to be unusual, this was necessary to insure the fastest, most accurate
assembly possible. Super Kraft recommends you follow the assembly order as shown.
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