experience gained when he designed
200-square-inch and 55-square-inch
models intended to be flown in small
venues. The Transition 75 has a 20-
inch wingspan and a flying weight
of 4. 7 ounces. Power comes from an
E-flite Park 180 brushless motor. It can
be flown using either 250 or 450 mAh
two-cell battery packs. The 250 mAh
pack delivers a 5-minute flying time,
while the 450 will fly for 9 minutes.
Plans for the Transition 75 appeared
in the January 2014 issue of RC Micro
World. Contact information is in
External Control Linkages
A regular contributor, John Krouse,
sent me a photo of his recent project.
This is a rudder/throttle control model
that uses wire-cut foam wing blanks
from Bob Selman Designs.
During the model’s concept phase,
John felt that an external pushrod for
the rudder would simply look wrong.
He decided that rather than a wood
stick for the fuselage tailboom, he
would use a hollow carbon tube.
The hollow carbon tube provided a
nice place to hide the rudder pushrod,
while still maintaining a relatively
simple installation. His close-up photo
shows the magnetic actuator used for
the rudder control and its mounting
location relative to the carbon-fiber
tube tailboom. The pushrod simply
passes through the tailboom to the
Bob Aberle brings us this introduction-to-ailerons design called the Transition 75.
98 Model Aviation APRIL 2014