Kinner Sportster

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Role Light monoplane
Manufacturer Kinner Airplane & Motor Corporation
Designer Max B. Harlow
First flight 1932

The Kinner Sportster was a 1930s American light monoplane built by Kinner Airplane & Motor Corporation.

Design and development[edit]

The Kinner Airplane & Motor Corporation had been producing radial engines since 1919 decided to enter the light aircraft market. The first design was a single-seat low-wing monoplane the Kinner Sportster K with a fixed tailwheel landing gear. Further versions followed with different engines. The strut-braced, low-wing, open cockpit, conventional gear aircraft featured folding wings. [1]In 1933, an improved version the Sportwing B-2 was introduced. An enlarged four-seat version was produced in 1935 as the Kinner Envoy. Kinner became bankrupt in 1937 and rights to the Sportster were acquired by the Timm Aircraft Company. The Sportster was also produced after the Bankruptcy by Security-National Corp as the Security S-1 Airster


K Sportster
Powered by a 100 hp (75 kW) Kinner K-5 engine.
K-5 Sportster
B Sportster
Powered by a 125 hp (93 kW) Kinner B-5 engine.
B-1 Sportster
Powered by a 125 hp (93 kW) Kinner B-5 engine.
B-2R Sportster
B-2 Sportsters modified by Timm aircraft, with 160 hp (119 kW) Kinner R-5 engines, after Kinners bankruptcy;also marketed as the Timm 160.
Timm 160
Sportsaters modified by the Timm Aircraft Company powered by 160 hp (119 kW) Kinner R-5 engines.
Security S-1 Airster
Production of the re-named Sportster by Security-National Corp, formed by Kinner after the original company's bankruptcy

Specifications (B-1)[edit]

General characteristics

  • Crew: Two Side by side
  • Powerplant: 1 × Kinner B-5, 125 kW (93 hp)


  • Maximum speed: 120 km/h ( mph)
  • Cruising speed: 70 km/h ( mph)
  • Endurance: 4 hours

See also[edit]

Aircraft of comparable role, configuration and era

Sportster K is an earlier version of the B1 with the only difference being it was powered by the 100 hp Kinner k-5 engine. The Sportster B-2 had the wings clipped to 35 ft and was powered by the 125 hp B5 engine. After the Bert Kinner was forced out - he founded the Security Aircraft company and produced the Security Airster which was a very close copy of the Sportster. Trimm purchased the rights to and manufactured several Sportsters under the Trim name. Later the airframe design was used by the Calair corp and finally design elements of the Sprotster can be found in the Piper Pawnee ag aircraft.


  1. ^ John Underwood (Winter 1969). "The Quiet Professor". Air Progress Sport Aircraft. 
  • The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing. 

External links[edit]