Theiss Speedster

[1] The aircraft was designed to comply with the US FAR 103 Ultralight Vehicles rules, including the category's maximum empty weight of 254 lb (115 kg).

The Speedster features a strut-braced biplane layout with interplane struts, a single-seat open cockpit, fixed conventional landing gear with wheel pants and a single engine in tractor configuration.

[1] The aircraft is made from a combination of aluminium, wood, steel and foam.

With full fuel of 5 U.S. gallons (19 L; 4.2 imp gal) the payload for the pilot and baggage is 178 lb (81 kg).

[1] The standard day, sea level, no wind, take off and landing roll with a 40 hp (30 kW) engine is 200 ft (61 m).