130 MODEL AVIATION
JUNIOR WORLD CHAMPIONSHIPS:
August 8-14, the 11 members of the US
team competed in the 2004 Junior Free
Flight World Championships in
Moncontour, France. I’ve had the
opportunity to watch many of the team
members in action at the Nats and have
developed a respect for their teamwork and
ability to persevere despite bad weather and
other problems. These were qualities they
needed in France.
For some of our Junior team, the bad
weather hit before the contest.
Thunderstorms in London caused flight
delays and thousands of pieces of
misplaced luggage, including two of the
team members’ model boxes. Philip
Scheiman and Brian Bauer had to make do
with borrowed aircraft.
Others had problems during the contest.
Sarah Radziunas, who is noted for her
aggressive winding style, broke two motors
in the fourth round and then launched, only
to have the DPR (delayed propeller release)
fail to activate. A hurried second attempt
resulted in the stabilizer staying down in the
power-burst setting and the model diving
in.
Taylor Gunder, who was one of 10 F1B
fliers with all maxes at the start of the
Louis Joyner, 6 Saturday Rd., Mt. Pleasant SC 29464
FREE FLIGHT DURATION
Junior World Champ John Lorbiecki sets to launch his 1cc
engine-powered F1J Power model. John Lorbiecki Sr. photo.
F1J Power winners (L-R): John Lorbiecki, first; 2002 Junior World Champ Austin
Gunder, second; Jonathan Schelp, third. John Lorbiecki Sr. photo.
Cody Secor’s model glided into the top of a tree in the fourth
round, one second short of a max. John Lorbiecki Sr. photo.
12sig5.QXD 10/22/04 1:30 pm Page 130
seventh round, had the rubber motor blow
just after launch, resulting in a 24-second
flight. In Power, Cody Secor dropped one
second on his fifth flight when his model
glided into a tree.
The two most experienced US team
members—2002 Junior World Champion
Austin Gunder and 2002 Silver Medalist
John Lorbiecki—maxed out, as did fellow
team member Jonathan Schelp. It was to
be an all-US flyoff.
In the early-morning flyoff, John made
the seven-minute max, with Austin 12
seconds behind for second. Jonathan did
284 seconds to place third. (Cody Secor
was one second short of making the flyoff,
finishing fourth.) With the team placing
first, third, and fourth, the US won the
F1J/P team award. (Because he was flying
as the defending World Champion,
Austin’s score did not count toward the US
team’s total.)
This report was based on Ian Kaynes’
article in Free Flight news and reports on
the Southern California Aero Club’s
(SCAT’s) Electronic News. FFn is a
monthly British newsletter that provides
contest reports from around the world, as
well as articles and three-view drawings
for all aspects of FF. For subscription
information, E-mail Ian at ffn@btinter
net.com. SCAT Electronic News is
available on the Internet at www.aero
model.com.
December 2004 131
Sarah Radziunas launches her F1B Wakefield model nearly
vertical. Taylor Gunder (L) waits his turn. Radziunas photo.
During the midday break, Amanda Barr and Sara Radziunas enjoy an impromptu
Catapult Glider-building session with Israeli team members. Kathy Radziunas photo.
Former Open team member Bob Piserchio helps Taylor Gunder
with the front end of his Wakefield. Radziunas photo.
Junior Free Flight World Championships
results:
F1A Individual (53 flew)
1. Niels Wijnhoven (Netherlands): 1,260 +
267
2. Sergey Protozoon (Ukraine): 1,260 + 216
3. Teemu Taponen (Finland): 1,260 + 209
4. Anton Gorky (Russia): 1,260 + 163
5. Janis Zarins (Latvia): 1,260 + 161
20. Michael Avallone (USA): 1,162
27. Tyler Secor (USA): 1,133
40. Brian Bauer (USA): 1,059
F1A Team
1. Israel
12sig5.QXD 10/22/04 1:30 pm Page 131
2. Russia
3. Netherlands
11. USA
F1B Individual (29 flew)
1. Alexi Burdov, World Champion (Russia):
1,260 + 301
2. Rejwan Shauli Avrahm (Israel): 1,260 +
278
3. Vevhely Gorban (Ukraine): 1,260 + 210
4. Benjamin Marquois (France): 1,260 + 183
5. Stephen Jallet (France): 1,260 + 182
11. Philip Scheiman (USA): 1,240
23. Taylor Gunder (USA): 1,104
26. Sarah Radziunas (USA): 1,063
F1B Team
1. Ukraine
2. Israel
3. Russia
7. USA
F1J/P Individual (20 flew)
1. John Lorbiecki (USA): 1,260 + 420
2. Austin Gunder, World Champion (USA):
1,260 + 408
3. Jonathan Schelp (USA): 1,260 + 284
4. Cody Secor (USA): 1,259
5. Lukasz Zagorowski (Poland): 1,196
5. Mykola Plastic (Ukraine): 1,196
17. Amanda Barr (USA) 853
F1J/P Team
1. USA
2. Russia
3. Poland
Sympo 37: One of the problems with
magazine deadlines and the four-times-ayear
schedule for this column is that it can
take a long time to get information out. A
prime example is the National Free Flight
Society’s (NFFS’s) 2004 Symposium Report.
The deadline for the September 2004
Duration column was May 10—well before
the Sympo publication date. That’s why there
was only a brief mention of it in that column,
but it deserves much more than a mention.
Editor Walt Ghio has pulled together a
wide-ranging collection of papers about
technical and practical aspects of FF. On the
theory side, Ken Bauer’s “F1A Bunt
Computer Simulations” uses a computer
program to plot how stabilizer deflection
and timing affect height gain on Towline
Glider bunt transition.
“Selected Wing Designs for F1A and
F1B” by Hank Cole studies a number of
popular airfoils in the 20,000-50,000
Reynolds number range. Hank’s analysis of
each airfoil includes full-size drawings of
the airfoils from actual models, including
root, break, and tip airfoils. For many types
of FF models, tabulators offer a way to
control the boundary layer on the wing
upper surface.
“The Pin Turbulator” by Rudolf
Höbinger describes his use of pin tabulators
on his F1K/CO2 models. The pins are
actually pieces of 0.6mm plastic line spaced
approximately 1⁄4-inch apart and at 5% back
from the LE. The pins protrude roughly
1.0mm above the top surface of the wing.
Paul Rossiter’s “Computer Simulation of
Rubber Powered Models” explores the
importance of matching propeller and
rubber motor to the model. We should build
FF models down to the minimum weight.
Paul quantifies it. A P-30 that is 10 grams
heavier than the minimum weight will,
according to the computer simulations,
have a 20-second lower flight time than
one built down to weight.
In “Eliminating the Pusher Climb
Trouble,” William McComps offers the
interesting suggestion of using a
retractable forward fin to help
counterbalance the increased effective
vertical tail area on a pusher model under
power.
Hermann Andersen’s “Tips on Tips”
looks at the various options and tradeoffs
of wingtip design—lots of good food for
thought. In “Profili V.2.0, A Review,”
Peter King and Sergio Montes look at the
Profili airfoil software as a way to easily
and accurately draw ribs and as a tool for
analyzing the airflow over an airfoil at
various Reynolds numbers.
On the practical side, Allard van
Wallene’s “Composite Moulding at
Elevated Temperatures” offers a step-bystep
account of molding a carbonfiber/
epoxy component using a two-piece
mold and a silicone core to provide
pressure.
“Put Your Electric in the Clouds” by
Charles Groth details the controller he uses
on his Nats-winning electric models as
well as the gear setup that uses a shaft
extension to allow a cleaner propeller fold
while keeping the motor weight closer to
the model’s CG. Charles also explores an
alternative to the popular Ni-Cd battery in
“Lithium Polymer Batteries for Electric
Propulsion.”
David Mills’ “Growing Your Club” is a
must-read for any FF group that wants to
attract and retain members. Ron Pollard
discusses his methods in “Rubber
Testing.”
FF slope soaring, which has long been
a European-only event, is starting to gain
interest in this country. In fact, the
reigning World Champion is American
Bob Sifleet. Daniel Petcu’s “Building F1E
Magnet-Steered Gliders” should help
remove some of the mystery and increase
participation.
In “Variations on a Theme by
Richmond,” Mike Segrave adapts the
extremely low-aspect-ratio wing
planforms of Indoor models to a Coupe.
For those who are getting started in FF
Power, Don DeLoach’s “Beginning Free
Flight Power: A Journey” offers specific
recommendations for engines and models,
as well as tips on trimming and flying in
contests.
Aimee Raymond’s “Learning to Fly
With a Flight Log” brings an engineering
approach to trimming and flying Coupe and
Wakefield. The methodical slant could be
adapted to other events.
“The End of History Part II?! Or The
Never Ending Story” by Michael
Woodhouse offers a philosophical look at
the future of FF. In “The More I Fly, the
Luckier I Get,” Charles Dorsett analyzes
how eight former World Champions have
prepared and won.
The annual Models of the Year selection
committee, chaired by Aram Schlosberg,
chose eight airplanes for the 2004 honors:
the V-Squared AMA Power model by the
late Ed Keck, Charles Groth’s Big Red
electric, Stephan Stefanchuk’s STS-88 F1B,
B Coup by Bill Davis, Bill Bailey’s 35cm
F1D design, Marian Popescu’s MARPO
F1E, Stefan Rumpp’s S-27 Magic F1A, and
Victor Stamov’s F1H. Ken Bauer received a
special award for his F1A electronic timer.
The Symposium also includes
biographies of the five 2004 inductees into
the Free Flight Hall of Fame: Hank
Nystrom, Bob Randolph, Bob Stalick, Jim
Walston, and the late Ed Keck.
Copies of the 2004 Sympo are available
from NFFS Publications Services, c/o
Bob Stalick, Box 1775, Albany OR
97321. The cost is $25 for NFFS
members and $30 for nonmembers.
Postage is an additional $4. Please make
checks payable to NFFS. For more
information, contact Bob Stalick via Email
at [email protected].
The 2005 Symposium is already in the
works. If you are interested in
contributing a paper, please contact
Michael J. Woodhouse, editor, at 12
Marston Ln., Eaton, Norwich, Norfolk,
NR4 6LZ, United Kingdom, or e-mail
[email protected].
Starlink: For most of the last decade,
Allen Brush and his wife Tina have been
providing high-quality Rubber kits and
accessories under the Starlink and
FliteTech labels. Their offerings include
the popular Burdov Coupe and Wakefield
models, the Bob White Twin Fin series,
and several P-30 designs. Through the
years, Al has worked closely with
Andrey Burdov, who produces the kits in
Russia.
Now it’s time for a well-earned rest.
The new owner is Larry Bagalini. The
new name and address are Starlink-
FliteTech Models, 15423 Barona Mesa
Way, Ramona CA 92065; Tel.: (760)
788-1858; Fax: (760) 789-6524; E-mail:
[email protected]; Web
site: www.starlink-flitetech.com. MA
