Corrections
The VK Cherokee shown on page 22 of
the October 2003 Model Aviation was built
and flown by Bob Garbarini (Buffalo
Grove IL), not Bob Gardner.
Also in that issue, a drawing was
omitted from Bob Kopski’s “Radio Control
Electrics” column. It can be found on page
158 of this month’s MA.
Our apologies for the errors.
—MA staff
Dump’r
Reader reaction to the Dump’r
construction feature in the October 2003
issue has flagged some errors and other
issues. Here is a summary.
1) Text correction: Page 80, fourth
paragraph, change “ ... resistor 25 ... ” to
read “ ... resistor R12 ... ”
2) Parts List Addition: R7, 10.0K 1%
Mouser catalog number 660-
MF1⁄4CL1002F
3) Parts List Corrections: Change R8
Mouser catalog number to read 660-
MF1⁄4CL6811F. Change Q1, Q2, Q4
Mouser catalog prefix from “512” to any of
511, 610, or 625. Change LED Holder
Mouser catalog number from 531-0003 to
351-0003.
4) Schematic diagram page 76
(clarification only; does not affect
operation): Q2, a 2N3906 PNP transistor, is
shown with an incorrect emitter symbol.
The arrow should point inward—not
outward. Q1 emitter should be wired to the
Vneg buss, not to a go-nowhere ground
symbol!
5) Text correction: Page 80, in Table of
Ohmmeter Tests, “9.5-10” should read
“9.5-10K.”
This covers all known issues with
Dump’r as of 09/15/03. As stated in the
article, please feel free to write with any
questions or comments. I will not let you
fail, provided you give me the opportunity
to help.
Bob Kopski
25 West End Dr.
Lansdale PA 19446
About the Cover ...
Since I started modeling in the ’50s, I,
for one, really appreciated the cover picture
of the Rudderbug. But the “About the
Cover” insert inside stated the “bug” has
throttle and rudder only. I see in the picture
a pushrod and control horn on the left
elevator half.
I enjoy Model Aviation very much!
Keep up the good work!
Dale Brass
Ackley, Iowa
I noticed the cover of October’s Model
Aviation, and the inside “About the Cover”
said that this model had rudder and throttle
only. How about the elevator control rod
hooked up to the elevator? What’s that all
about?
Don Gillette
Gig Harbor, Washington
What you see is not always the way it
appears!
The airplane was flown with rudder and
elevator control for about one year. This
was done to ensure safe landings until the
proper stabilizer trim was obtained. At that
time, the elevator servo was removed and
the servo end of the elevator pushrod was
permanently secured to the servo tray. This
allowed small elevator trim changes prior
to future rudder-only flights.
I have removed the pushrod, elevator
hinges, and the elevator is permanently
glued to the stabilizer. I have included a
picture to show you how the airplane was
flown at the recent VR/CS Spirit of
Selinsgrove Reunion in the Jack Port
Memorial Pattern class (rudder and
throttle only).
Bob Noll
Vestal, New York
Sticky Subject
I recently joined AMA and received my
first issue of Model Aviation—the October
2003 issue. Since I fly park flyers, I was
interested to read Tom Sullivan’s product
review of the GWS Zero.
Tom seemed to have a bit of trouble
with the GWS glue included with the Zero
kit. He’s not the first person to be confused
by this mysterious substance. The key
point of information that is omitted from
the GWS instructions is that their glue is a
contact cement.
As a contact cement, proper usage
consists of applying a thin coating to both
parts being joined. You then wait a short
time while the glue partially dries, then
bring the parts into contact, at which point
they’ll bond together.
While some builders use the GWS glue
successfully, many of us have discarded it
in favor of other adhesives. Polyurethane
glues, such as Elmer’s ProBond, are
popular because they are lightweight and
very strong. Two-part epoxies also work
well, although they are a bit heavy.
Odorless (foam-safe) cyanoacrylate is also
a good choice for some jobs.
Jeff DeTray
Troy, New Hampshire
Chester Special
What a great pleasure it was to see
Frank Beatty’s wonderful plans and
presentation of Art Chester’s Special in
your October 2003 issue of Model
Aviation. Seldom do we see a presentation
of this quality by a master draftsman and
builder in today’s model magazines, which
seem to have become consumer report type
presentations of ARF evaluation.
Mr. Beatty is probably in my age group,
and I can remember when such
presentations were not all that uncommon,
although his Chester Special presentation is
superb by any standard. Art Chester was a
remarkable designer of racing aircraft with
his Special, Jeep, Goon, and Swee’ Pea
designs.
I am not a builder of Control Line
aircraft, but as an artist I had to convey my
thoughts on Mr. Beatty’s work. Hopefully,
we will see more presentation of this
quality in the future and more modelers
will be encouraged to actually build what
they are flying. My building is mostly RC
oriented and this Special could be adapted
to RC flying.
Robert B. Dance
Kinston, North Carolina
Battery Basics, Etc.
I wish to thank Bob Aberle for his
superb article in the October issue of
Model Aviation, “From the Ground Up:
Battery Basics.”
It is the most well-written, clear, and
informative article I’ve read on the subject.
It is particularly helpful to “newbies” like
me to the electric part of our hobby.
Dave Hmiel
Hood River, Oregon
I wanted to drop you a few lines to tell
you how much I enjoyed [Bob Aberle’s]
article in Model Aviation, October 2003,
titled “Battery Basics.”
I always read [his] articles, but this one
is excellent! It has very good pictures and
extensive descriptions and suggestions on a
Model Aviation, 5161 E. Memorial Dr., Muncie IN 47302
Letters to the Editor
December 2003 9
Continued on page 168
resources for everything [he] talked about.
Nice going!
Park Abbott
Santa Rosa, California
I want to thank you for printing the picture
of my friend Walter Finley and the Piper
Cherokee he built for me in “Focal Point” in
the October 2003 issue. Walter has been
building model airplanes since he was nine
years old—longer than I have been alive, and
I am 61.
I also want to congratulate Bob Aberle on
the excellent article on “Battery Basics.” I
have flown glows for years, but am just now
becoming interested in electric-powered
flight. You would think the subject of
batteries would be simple—wrong. Articles
such as Bob’s are very informative. Thanks.
I enjoy your magazine. Keep up the good
work. MA
Wayne Powers
Jackson, Tennessee
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