The first variant, a Sportster 7000 first flew on 30 April 1935. It was a two-seat braced high-wing cabin monoplane powered by a LeBlond 5DE or LeBlond 5E radial engine. The 7000 followed by a de luxe and more powerful engined versions, the 8500,9000-L and 9000-KR. It had a standard tailskid landing gear but was available with floats or skis. In 1937 a new variant appeared the Sportster 9000-W powered by a 90hp (67kW) Warner Scarab Jr radial engine.
A single Sportster 7000 was impressed into military service during World War II under the designation C-102A.