Of the two power
systems, the author
preferred the electric
version. With the
4,400 mAh LiPo
battery pack, you
can expect 12 to
15-minute flight times
with proper throttle
Mention the name Kaos to any old-school modeler, and it will be immediately recognized as one of the cornerstones of early sport or Pattern designs. The Kaos family was designed by Joe Bridi and was first featured in the February 1970 issue
of R/C Modeler. Many variations of the original Kaos came afterward, and I’m very excited to
review the Tower Hobbies Kaos, which the company refers to as the Kaos 60 GP/EP ARF.
One constant throughout the Kaos series was the airfoil and basic wing design. These
are credited with making the Kaos a gentle, easy flier at low speeds and an all-out aerobat
when pushed. True to the original Kaos, this new ARF is sized for a .60-size glow engine,
but has roughly 15% more wing area.
When taking the parts out of the box, I like to take some time to examine what makes
up a review model. In the case of the Kaos, I found that the entire airframe is made from
balsa and plywood. This construction is very light and rigid.
The wing comes as left and right halves, designed as plug-ins. They fit onto 11/16-inch
diameter wing tubes and each wing half has a plastic antirotation pin fitted toward the
trailing edge (TE) of the center rib.
The fuselage features the same boxy shape as the original Kaos, with one exception.
The canopy is fitted to a huge hatch. When removed, the inside of the fuselage is exposed
from the firewall all the way back to the wing’s TE. This should make installing any
equipment a breeze. This hatch is held in by a spring-release on the rear and plastic
locating pins in the front.
A comprehensive hardware package is included in the kit—all of the pushrods, plastic
clevises and horns, screws, nuts, landing gear, wheels, wheel collars, motor mounts,
spinner, etc. If you choose glow power, you can use the 420cc plastic fuel tank, which is
preplumbed for a three-line system. If you want to try electric power, lightweight, laser-cut plywood parts are included to construct the motor mounting box. Regardless of the
powerplant you use, you can streamline the looks with the included fiberglass cowl.
Everything is covered in white, with blue, orange, and black trim. There were surprisingly
I was curious to see if this Kaos would fly as did the Super Kaos back in the day. Maybe
it would bring back some memories.
As usual in my reviews, I’m not going to go through all of the construction steps. If you’d
like to see the steps, the Kaos ARF’s manual is online. Also online is an addendum that
covers a few omissions in the manual. The links are in the “Sources” section.
Assembling the wing halves begins by installing the two aileron servos into the cutouts
on the bottom of each wing half, then threading the servo leads through the wing to the
center. When in place, the plastic control horns are fitted and the pushrods are assembled
and snapped into position. With the hinging already done, it makes quick work.
The Kaos is a tricycle design, so the main gear needs to be installed next. Each strut is
held in place with a couple of thick plastic straps and four screws. Be careful to correctly
install the struts because there is a slight sweep back to the gear. With the wheels and
wheel collars finished, the wings are good to go.
Work now shifts to the fuselage and the first thing the manual has you tackle is attaching
the tail surfaces. In hindsight, I would skip to mounting your powerplant first, and then
come back to the tail surfaces because it would be easier without them in the way, but
we’ll follow the manual.
65 Model Aviation JANUARY 2016 www.ModelAviation.com