Designed by Jim Osborne & Morgan Schrack the Acroduster Too, originally called the Schrack-Stolp Super Star-duster Too, is a scaled-down 9/10 scale version of the Starduster Too and first flown in 1984. The Acroduster Too SA750 is a fully aerobatic, two-place machine stressed to plus & minus 9 G’s. It has modified symmetrical wings and is meant for minimum of 180 and up to 360 horsepower. It possible to remove the front windscreen, cover the front cockpit with a hatch cover, and add a sliding bubble canopy over the rear hole. The fuselage was also metalized back to the rear of the cockpit.

The optimum engine is the fuel-injected 200 HP Lycoming, with constant speed propeller. The prototype cruises about 160 mph, climbs 2300 fpm, and stalls at 55 mph. Although it has a comparatively sharp stall and sensitive control response, wings can be maintained in the level attitude with rudder alone or with aileron. This with stick full back by reducing power to idle and zero climb until stall is obtained.

Construction follows traditional biplane practices with steel tube structure and spruce wing spars. Ribs are plywood with cap strips.

All materials were available from Stolp Starduster Corporation, either in kit form or as raw materials.

Gallery

Engine: 200 hp
HP range: 180-300
Height: 6.8 ft
Length: 18.5 ft
Wing span: 21.4 ft
Wing area: 130 sq.ft
Weight empty: 1050 lb
Gross: 1950 lb
Fuel cap: 35 USG
Speed max: 185 mph
Cruise: 155 mph
Stall: 55 mph
ROC: 2300 fpm
Landing dist: 1200 ft
Service ceiling: 16,000 ft
Seats: 2
Landing gear: tail wheel

Engine: 200 hp
HP range: 180-300
Height: 6.8 ft
Length: 18.5 ft
Wing span: 21.4 ft
Wing area: 130 sq.ft
Weight empty: 1050 lb
Gross: 1950 lb
Fuel cap: 35 USG
Speed max: 185 mph
Cruise: 155 mph
Stall: 55 mph
ROC: 2300 fpm
Landing dist: 1200 ft
Service ceiling: 16,000 ft
Seats: 2
Landing gear: tail wheel

First introduced in 1973, the SA-700 Acroduster is a single-seat, fully aerobatic biplane suitable for engines in the 125-200 hp range. Its fuselage is an all-metal structure constructed from light alloy, and its wings are conventional two-spar structures with spruce spars, plywood ribs and fabric covering. A unique feature of the Acroduster 1 is that when the stick is pulled back, all four ailerons are raised slightly to help maintain aileron control when the airplane is stalled in a normal attitude. The opposite happens when the stick is pushed forward to aid control when the airplane is in an inverted stall.

The Acroduster uses com¬pletely separate wing panels pinned in the center with a pivot type joint and tied to the fuselage with an open stance ca¬bane that has four mounting points on the wings.

They are always building from a kit because Osborne won’t sell a set of plans without the com¬plete materials kit to keep them compa¬ny. The kit is literally a complete, but disassembled, airplane that needs only the engine and propeller. Even the motor mount and gas tank are completely fin¬ished and ready to nail in place.

Engine: Lycoming, 200 hp
Height: 6.25 ft
Length: 15.75 ft
Wing span: 19 ft
Wing area: 105 sq.ft
Weight empty: 740 lb
Gross: 1190 lb
Aerobatic Weight 1050 lb
Fuel cap: 25 USG
Wing Loading 10 lb/sq ft
Power Loading 5.25 lb/hp
Speed max: 180 mph
Cruise: 165 mph
Stall: 70 mph
ROC: 3000 fpm
Service ceiling: 12,000 ft
Seats: 1
Landing gear: tail wheel

Aerovant Aircraft Corp Acroduster I
Engine: Lycoming, 200 hp
Height: 6.3 ft
Length: 15.8 ft
Wing span: 19 ft
Wing area: 105 sq.ft
Fuel capacity: 25 USG
Empty weight: 740 lb
Gross weight: 1190 lb
Top speed: 180 mph
Cruise: 165 mph
Rate of climb: 3000 fpm
Service ceiling: 12,000 ft
Seats: 1
Landing gear: tailwheel

Designed by Lou Stolp and first flown in 1971, the Starduster Too was built to fill a need for a reasonably sized, two-place, open sport biplane. It was built to fly just for fun and is not intended to be an aerobatic airplane. It is quite strong, however, and many owners use the aircraft for aerobatic flight, but this is beyond the original concept of the machine. The aircraft is rated +/- 6G. Stability is good and the light wing loading makes slow landing speed and short-field operation outstanding.

Stolp SA-300 Starduster 2 Article

The main structure of the airplane is built of 4130 steel tubing, wood faired and fabric covered, and sheet stock and has no machined fittings or other complicated bends, which is an advantage for the average homebuilder with limited machine equipment to use. The wings have spruce spars and the ribs are made of 1/4″ plywood using a modified M-6 airfoil and fabric cover. All four wings carry ailerons. Construction of the plane has been kept as simple as possible.

The prints are quite complete with ribs and most fittings full size, which saves considerable time on construction of these parts.

The O-360 Lycoming is the best optimum size engine either in the 180 HP or the 200 HP version. Quite a few Starduster Too aircraft have been constructed with the Lycoming IO-540, with as much as 375 HP. There are Ranger powered, Ford V-8 and V-6 powered, Continental powered, Jacobs, and even some R-985 powered examples. The airframe is a proven unit and allows for many different types and kinds of engines. On the low end of the power curve there are some 125 HP aircraft in service. Stolp recommends the 180-hp Lycoming with a constant-speed prop as the Optimum powerplant. There are several aircraft with over 2,500 flying hours, and one with more than 5,000 hours.

All raw materials as well as certain prefabricated parts (such as fiberglass turtlebacks, nose cowls, wheel pants, cockpit cowlings, welded aluminum fuel tanks, plexiglass windshields, canopies, and so forth) are available at reasonable prices.

Variation:
Neubert Nostalgia

Engine: Lycoming, 180 hp
HP range: 159-300
Height: 7.5 ft
Wing span: 24 ft
Fuel cap: 44 USG
Weight empty: 1000 lb
Gross: 1985 lb
Speed max: 148 mph
Cruise: 130 mph
Range: 600 sm
Stall: 50 mph
ROC: 1800 fpm
Take-off dist: 700 ft
Landing dist: 1000 ft
Service ceiling: 16,000 ft
Seats: 2
Landing gear: tail wheel

Engine: 180hp Lycoming O-360 (125-260hp)
Wingspan: (upper) 24’0″ (lower) 20’5″
Length: 21’9″
Useful load: 800 lb
Max speed: 200 mph
Cruise: 153 mph
Stall: 60 mph
Seats: 2

Super Starduster SA101
Engine: Lycoming IO-360 AIA, 200 hp
Upper Span – 24 ft.
Lower Span – 20 ft. 5 in.
Wing Area – 162 sq.ft.
Incidence – 0 deg. lower wing
Dihedral – 0 deg. lower wing
Airfoil – Symmetrical
Height: 7 ft
Length: 16 ft
Empty weight – 840 lbs
Gross: 1500 lbs
Speed at 5000 ft. over 170 mph
Vne, 220 mph
Stall 55 mph
Range: 440 sm
ROC: 3000 fpm
Take-off dist: 200 ft
Landing dist: 1100 ft
Service ceiling: 12,500 ft
Seats: 1
Landing gear: tail wheel

Designed by Lou Stolp, this single-place member of the Stolp family is the younger brother to the two-place Starduster Too. The Starduster is intended for the Lycoming 125-hp engine, but it has been built with engines ranging from 85 to 170 hp with a constant-speed prop. The 125 to 160 hp range is optimal.

The Starduster One SA100 was built to fill a need for a single-place, open sport biplane. It was built to fly just for fun and is not intended to be an aerobatic airplane. It is quite strong, however, and many owners use the aircraft for aerobatic flight, but this is beyond the original concept of the machine.

The main structure of the airplane is built of 4130 steel tubing and sheet stock and has no machined fittings or other complicated bends, which is an advantage for the average homebuilder with limited machine equipment to use. The wings have spruce spars and the ribs are made of 1/4″ plywood using a modified M-6 airfoil. Construction of the plane has been kept as simple as possible and it goes pretty well.

The prints are quite complete with ribs and most fittings full size, which saves considerable time on construction of these parts.

The prototype N70P first flew in November 1957.

Engine: 125hp Lycoming
Wingspan: 19’0″
Length: 17’0″
Useful load: 300 lb
Max speed: 148 mph
Cruise: 130 mph
Stall: 55 mph
Range: 400 mi
Seats: 1

Gross Wt. 1080 lb
Empty Wt. 700 lb
Fuel capacity 24 USG
Wingspan 19’
Length 16’6”
Top speed 147 mph
Cruise 132 mph
Stall 50 mph
Climb rate 2000 fpm
Takeoff run 200 ft
Landing roll 300 ft
Range 450 miles