Simplex Aircraft Corp R-2-D Red Arrow Dual Plane / Simplex Racer

The 1929 Simplex R-2-D Red Arrow Dual Plane was a convertible monoplane/biplane. The top shoulder wing was permanent, and 24’0″ lower wings could be easily added for increased lift and load-carrying.

The one built, NR43M, was flown as monoplane Simplex Racer with a 225hp Wright engine in the 1929 Nationals events with clocked pylon speeds of more than 220mph. It was piloted by Dick Myhres.

Monoplane
Engine: 165hp Wright J-6
Wingspan: 32’9″
Length: 21’0″
Useful load: 700 lb
Max speed: 140 mph
Cruise: 125 mph
Stall: 50 mph
Range: 600 mi
Seats: 1

Monoplane
Engine: 225hp Wright J-6
Wingspan: 32’9″
Length: 21’0″
Max speed: 165 mph
Cruise: 150 mph
Stall: 50 mi
Range: 550 mi
Seats: 1

Biplane
Engine: 225hp Wright J-6
Wingspan: 32’9″
Length: 21’0″
Max speed: 150 mph
Cruise: 135 mph
Stall: 45 mph
Range: 650 mi
Seats: 1

Simplex Aircraft Corp S-2 Kite / Sioux Kite

A monoplane called the S-2 Kite was developed in 1931. Designed by Omer Woodson, it was a probe into the inexpensive, ultralight aircraft market.

It had an uncovered, girder-like fuselage, and thick, cantilever wing. One was built, NX489M c/n 1002.

Simplex failed to get anywhere with the project, but the idea went with Woodson and company test pilot Myhres when they left in 1930 to form Cycloplane Co.

Sioux Aircraft Corporation built aircraft under the name Sioux Kite.

S-2 Kite
Engine: Szekely SR-3, 40hp
Seats: 1

Simplex Aircraft Corp K-2 Red Arrow

Simplex K-2-C

The 1928 Simplex K-2-C Red Arrow (ATC 44) was designed by Omer Woodson with origins in the Woodson M-6. Of wooden construction it was Side-by-side canopied cockpit and semi-cantilever wing. The first few were powered by 75hp Kinner engines and priced at $4,495.

The 1928 Simplex K-2-S Red Arrow (ATC 43) was the same as the K-2-C, but with side-by-side open cockpit and priced at $4,115.

Simplex K-2-S

About 10 K-2s were built. Piloted by Dick Myhres, one, NC6504, won the 1928 California Class-A Race (Los Angeles-San Francisco) in a field of 16 aircraft in 3hr10min averaging 126mph.

Sioux Aircraft Corporation built aircraft under the name Sioux Red Arrow.

K-2-C Red Arrow
Engine: 90hp Kinner K-5
Wingspan: 34’4″
Length: 22’3″
Useful load: 570 lb
Max speed: 120 mph
Cruise: 108 mph
Stall: 37 mph
Range: 550 mi
Seats: 2

K-2-S Red Arrow
Engine: 90hp Kinner K-5
Wingspan: 34’4″
Length: 22’3″
Seats: 2