[1][2] In 1949, Nelson began the design of another self-launching glider, but this time, he teamed-up with Harry Perl and Don Mitchell.

[1][2] The design features an all-flying stabilator with an anti-servo tab, spoilers on the wing's top surface and dive brakes on the bottom.

[1][2] The design was not type certified, and the seven built were registered under the Experimental - Racing - Exhibition category.

Nelson later sold the rights to the aircraft and the engine to Charles Rhoades of Naples, Florida.

[2][4] In the mid-1950s a Hummingbird was flown by Les Arnold to an unofficial US motorgliding distance record of 321 mi (517 km).