Planes Worth Modeling — Acro Sport II Biplane

Oct 19, 2011 No Comments by

The Acro Sport II biplane was designed by EAA founder Paul Poberezny following the success of his single-place Acro Sport I. Paul designed the 2-place biplane as a trainer for would be aerobatic pilots who wanted to build time toward qualifying to fly the 1-place Acro Sport. The original Acro Sport was designed to serve as an aviation building project for students in high school shop classes, some of whom, Paul hoped, would be convinced by the experience to pursue an aviation career.

The prototype first flew on January 11, 1972, just 352 days after Paul began designing the aircraft. Both biplanes are built using welded steel tubes and feature wooden wing ribs and spars. Both are finished with fabric covering and paint. The prototype is powered by an 180hp, 0-360, 4-cylinder Lycoming engine and is part of the EAA Museum’s aircraft collection. The Acro Sport’s long nose and tail moments, constant wing chord and simple cabane and interplane strut design make it a good subject for a scale or sport-scale model. If you’re tired of the Pitts or Christen Eagle, try the Acro Sport II.

The Acro Sport II has been licensed by the FAA in the Experimental aircraft category. Plans for the Acro Sport, as well as other Poberezny-designed aircraft, are available from Acro Sport Inc. in Hales Corners, WI, and are specifically intended for the amateur, home-based aircraft builder.

To download a PDF 3-view Drawing, Click Here: Acro Sport II

Acro Sport Inc is an aircraft manufacturer based in Hales Corners, Wisconsin that markets plans for homebuilt aircraft. The company markets plans for the Acro Sport I and Acro Sport II aerobatic biplanes, but also owns the rights to a number of other designs, including the Pober Pixie, Pober Junior Ace, and Pober Super Ace. All these designs are of Paul Poberezny’s. The company is not affiliated with either Poberezny of the Experimental Aircraft Association. Complete part kits are also available from Wicks Aircraft.

General characteristics

Crew:                    1

Capacity:            2

Wingspan:          21 ft 8 in

Height:                6 ft 7.75 in

Length:                18 ft 10.25 in

Wing area:          152 sq ft

Empty weight:   875 lb

Gross weight:    1,520 lb

Powerplant:       1 × Lycoming prop, 180 hp

Performance

 

Max speed:        152 mph

Cruise speed:    123 mph

Stall speed:         53 mph

Range:                  430 mi

Service ceiling: 20,000 ft

Rate of climb:    1,200 ft/min

Acro Sport Inc., P.O. Box 462, Hales Corners WI 53130; (414)529-2609

 

 

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Senior Technical Editor About Me: I have a lifelong passion for all things scale, and I love to design, build and fly scale RC airplanes. With 20 plus years as part of the Air Age family of magazines, I love producing Model Airplane News and Electric Flight.
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