Edition: Model Aviation - 2008/03
Page Numbers: 84,85

84 MODEL AVIATION
Focal Point
Mike Vogelsang (1320 S. Farming Rd., Arbor Vitae WI 54568;
E-mail: [email protected]) built his two 1/3-scale El Chuparosa
biplanes using plans from Scale Plans and Photo Service. His great
uncle, Ray Hegy, designed the full-scale El Chuparosa in the late
1950s.
Each model spans 48 inches. One is powered by a Saito 100
twin, and the other has a Saito 91. Futaba guidance is used with
Hitec digital servos.
The cowl and wheel pants were molded from fiberglass using the
plug cross-sections on the plans. The El Chuparosas are finished
with 21st Century Fabric.
El Chuparosa Twins
Bob Ellingson (1270 River Cove Rd., Social Circle GA 30025;
E-mail: [email protected]) bashed his Sig Rascal 110 ARF
into a design he calls a “Radical 110,” which looks more like a
classic 1930s-era airplane because of the Saito FA-325R5 radial
four-stroke engine up front.
Bob replaced the original fuel tank with a larger 24-ounce size
and built a new engine mount, bringing the Saito approximately 3/4
inch closer to the firewall.
To properly ballast the Radical 110, Bob replaced the
prepackaged aluminum tail-wheel assembly with one made from
brass, which added 8 ounces to the model’s weight. That combined
with two 2400 mAh Ni-Cd battery packs behind the cockpit allowed
the airplane to balance properly on the CG. Its dry weight is 16
pounds.
“The Radical 110 flies like a gentle giant and sounds great flying
overhead at full throttle,” wrote Bob.
Federico Jones (825 Darden Dr., Newport News VA 23608; Email:
[email protected]) built this SIAI Marchetti SF-260
from Model Airplane News plans that David W. Goerne designed.
This 1/4-scale fighter trainer spans 87 inches and features flaps
and Robart retracts. Its flying weight is 26 pounds, and it is covered
with Super Coverite.
The model is powered by a Western Hobbies GF45i gas engine
that swings an 18 x 12 propeller. A Futaba 9C radio system is used
with 11 servos onboard.
“The flight is smooth and realistic,” wrote Federico.
SIAI Marchetti SF-260
Radical 110
Rick Rea (7450 A Grant Village Dr., Saint Louis MO 63123; Email:
[email protected]) rebuilt this P-51D to honor the
Tuskegee Airmen.
This “Swap Shop Queen” has fully functional flaps and is
powered with an O.S. FS-91 Surpass II four-stroke engine that spins
a 14 x 6 Master Airscrew K-series propeller. Guidance is via a fivechannel
Futaba system.
Rick covered the model with Aluminum MonoKote and hand-cut
other MonoKote colors for the trim, stars, bars, and cowl. To
simulate the engine exhaust pipes, Rick used round dowel rod cut at
a 45° angle and painted black.
The airplane is finished in the markings of the 302nd Fighter
Squadron attached to the 332nd Fighter Group, to honor Lawrence
Roberts—father of Robin Roberts, anchor of ABC’s “Good
Morning America”—of the 44K Class of Tuskegee Airmen.
P-51D “Swap Shop Queen”
03sig3.QXD 1/25/08 9:47 AM Page 84
Edition: Model Aviation - 2008/03
Page Numbers: 84,85

84 MODEL AVIATION
Focal Point
Mike Vogelsang (1320 S. Farming Rd., Arbor Vitae WI 54568;
E-mail: [email protected]) built his two 1/3-scale El Chuparosa
biplanes using plans from Scale Plans and Photo Service. His great
uncle, Ray Hegy, designed the full-scale El Chuparosa in the late
1950s.
Each model spans 48 inches. One is powered by a Saito 100
twin, and the other has a Saito 91. Futaba guidance is used with
Hitec digital servos.
The cowl and wheel pants were molded from fiberglass using the
plug cross-sections on the plans. The El Chuparosas are finished
with 21st Century Fabric.
El Chuparosa Twins
Bob Ellingson (1270 River Cove Rd., Social Circle GA 30025;
E-mail: [email protected]) bashed his Sig Rascal 110 ARF
into a design he calls a “Radical 110,” which looks more like a
classic 1930s-era airplane because of the Saito FA-325R5 radial
four-stroke engine up front.
Bob replaced the original fuel tank with a larger 24-ounce size
and built a new engine mount, bringing the Saito approximately 3/4
inch closer to the firewall.
To properly ballast the Radical 110, Bob replaced the
prepackaged aluminum tail-wheel assembly with one made from
brass, which added 8 ounces to the model’s weight. That combined
with two 2400 mAh Ni-Cd battery packs behind the cockpit allowed
the airplane to balance properly on the CG. Its dry weight is 16
pounds.
“The Radical 110 flies like a gentle giant and sounds great flying
overhead at full throttle,” wrote Bob.
Federico Jones (825 Darden Dr., Newport News VA 23608; Email:
[email protected]) built this SIAI Marchetti SF-260
from Model Airplane News plans that David W. Goerne designed.
This 1/4-scale fighter trainer spans 87 inches and features flaps
and Robart retracts. Its flying weight is 26 pounds, and it is covered
with Super Coverite.
The model is powered by a Western Hobbies GF45i gas engine
that swings an 18 x 12 propeller. A Futaba 9C radio system is used
with 11 servos onboard.
“The flight is smooth and realistic,” wrote Federico.
SIAI Marchetti SF-260
Radical 110
Rick Rea (7450 A Grant Village Dr., Saint Louis MO 63123; Email:
[email protected]) rebuilt this P-51D to honor the
Tuskegee Airmen.
This “Swap Shop Queen” has fully functional flaps and is
powered with an O.S. FS-91 Surpass II four-stroke engine that spins
a 14 x 6 Master Airscrew K-series propeller. Guidance is via a fivechannel
Futaba system.
Rick covered the model with Aluminum MonoKote and hand-cut
other MonoKote colors for the trim, stars, bars, and cowl. To
simulate the engine exhaust pipes, Rick used round dowel rod cut at
a 45° angle and painted black.
The airplane is finished in the markings of the 302nd Fighter
Squadron attached to the 332nd Fighter Group, to honor Lawrence
Roberts—father of Robin Roberts, anchor of ABC’s “Good
Morning America”—of the 44K Class of Tuskegee Airmen.
P-51D “Swap Shop Queen”
03sig3.QXD 1/25/08 9:47 AM Page 84