160 MODEL AVIATION
AMA Plans Service Showcase
3Quarters
Treat yourself to a sporty low-wing
model that is easy to build
THERE IS ELEGANT beauty in
simplicity. That is true with almost
anything, but especially so when it
comes to model-airplane design. Straight
lines joined by strategic curves can
transform a “stick” into a balsa
sculpture. Randy Randolph was a master
at performing this transformation
regularly with his many easy-to-build
and -fly designs.
Randy created the 3Quarters to utilize
the Norvel .074 and Thunder Tiger GP
.074 engines that were arriving on the
scene in the late 1990s. He coupled his
formula of simplicity and ruggedness
with sporty looks and performance to
achieve a wonderful low-wing aircraft.
The flat-bottom, 45-inch-span wing
can be built warp-free on a flat board.
The rest of the model is crafted from
balsa strip and sheet stock, making this a
natural for first-time builders. The
3Quarters is also an excellent candidate
for conversion to electric power.
Plans for this design—number 910—
are available through the AMA Plans
Service. MA
10sig5.QXD 8/22/07 2:31 PM Page 160
Edition: Model Aviation - 2007/10
Page Numbers: 160