A tension thread on John’s finished
model holds in the wing dihedral.
John Krouse’s simple
variation on the bent
functions and each pair has its own
servo. The top and bottom ailerons are
linked via aluminum tubes and heat-shrink sleeves.
A construction article for Pat’s S.E.5a
is in the November 2014 issue of Model
Have you ever looked at a puddle-covered flying site after a good rain
and thought it would be nice to have
something to fly off the water? For those
of us who fly small-field models, taking
advantage of a puddle-covered field is
easier than you might think.
While pondering some significant
instances of post-rain standing water in
the Houston area, past contributor Jack
Pignolo had a nice idea that we could
pursue. He is the owner of an E-flite
UMX Radian. This is a nice, small-field
model with good power.
Jack believed that the aircraft had
enough power reserve to easily carry a
set of lightweight foam floats, and he
was correct. After a few hours of work,
his UMX Radian was ready to go with
a set of easy-to-mount and dismount
floats. When the rain comes, Jack can
enjoy some nice, water-based takeoffs
Jack’s float design is not the only one
that will work on the UMX Radian.
Look at the photo he provided to see his
floats. It should not be hard to develop
a set of floats for your UMX Radian.
Thanks for the idea, Jack.
John Krouse is known for his unique
approach to building model airplanes.
The tried-and-true method of bent
carbon-rod airframes has been the
subject of his recent efforts.
One difficulty when using the bent
rod method is the creation of ribs and
attaching them to the bent carbon-rod
outline. John uses a combination of
carbon tubes and rods with a few balsa
or foam ribs thrown into the mix.
Look at the photo John sent of a wing
that uses this method. He uses carbon
tubes to create the wing center section
LEs and TEs. Balsa ribs are then glued to
the tubes. After the center section tubes
are connected with the ribs, he creates
the tips using bent carbon rods. The
ends of the rods slip into the ends of the
center section tubes.
The wing is covered with plastic
wrap. A thread is attached to one
wingtip and wrapped around the
carbon rod of the opposite tip, but not
glued. It is pulled tight until the desired
amount of dihedral is generated, then it
This method could be used on
models larger than John’s by using
larger carbon tubes and rods. Thanks for
the idea, John.
That’s it for this installment. Please
let me know what you are up to in
the world of small-field flying. My
contact information is in the “Sources”
10201 Scarletoak Dr.
Independence KY 41051
88 Model Aviation DECEMBER 2014
Jack Pignolo has added some lightweight
foam floats to his UMX Radian for some