out how it works. Perhaps you can explain
it to me?
JOHN MROZINSKI, EMAIL
Good eye you have there! You are correct to
wonder how a Y-shaped pushrod linkage
attached to a single servo could work. Well,
it can’t. The caption for this mystery photo
should have been: “The flaps are controlled
by one servo. This custom pushrod is
included in the kit.” I don’t know how that
one got by us. I hope this clears it up for you
and all our other readers.
— John Reid
New!
Universal Fuel Stopper
Double Screen “Crap
Trap” Fuel Filters
Heavy Duty Aluminum
Stopper Assembly
Aluminum Check Valve
RUSSIAN THUNDER
U I love to read John Glezellis’ column
“Let’s Talk Giant Scale.” Recently, he discussed some points on preventative
maintenance for our models. He also featured a photo of a 37.5% Yak 54. Could you
please give me more information on this
great-looking aerobat?
RANDY MURPHY, HOUSTON, TX
Randy, thanks for writing! The opening
photo in John’s April 2009 column is the
Yak 54 ARF from Thunder Tiger. This
It’s a Fact: Sullivan Is The
Leader In Fuel System Components
Fuel Clamps For Tubing
F uel Filler Valve
Super Klunk
Gasoline Conversion Kit
One North Haven St.
Baltimore, MD. 21224
410-732-3500
Sullivan, The Fuel Systems Experts.
impressive, 37.5% 3D aerobatic plane has a
wingspan of 121 inches and is 108.5-inches
long. It has a wing area of 2,854 square
inches and weighs about 37 to 38 pounds.
The model comes with all the needed hardware, including an aluminum spinner,
landing gear and lots of giant-scale accessories. It features quality Lite Ply and Balsa
construction, Oracover finish and pre-painted fiberglass engine cowling and
wheel pants. John used a DA-150 Desert
Aircraft engine for power. — GY
SPITFIRE POWER
U I recently purchased the Kyosho Spitfire 50, which was flight tested in the
December 2008 issue of Model Airplane
News. I am interested in knowing if you
placed the Webra 55-P5 GT engine in the
offset position as stated in the instruction
manual. I am going to use a Magnum . 46
for power and have offset the engine as
specified.
ROBERT MADDEN, LAKE WORTH, FL
Robert, my son Mark and I installed the
Webra engine in an inverted position (not
offset), so that I wouldn’t have to remove
any of the firewall to make room to clear
the muffler. This position also allowed the
least amount of engine cowl butchery. Hope
that helps and I’m sure you’ll be happy
with your Spitfire—it flies great!
— Klaus Ronge
WRITE TO US! We welcome your comments and
suggestions. Address letters to “Airwaves,” Model Airplane
News, Air Age Inc., 20 Westport Rd., Wilton, CT 06897-
7337 USA; email man@airage.com. Letters may be edited
for clarity and brevity. We regret that, owing to the
tremendous numbers of letters we receive, we cannot
respond to every one.
