The Wasp GT was designed by Ole Hartmann and introduced to the Australian Aircraft Kits range of amateur-built light aircraft early in the 21st century, the kits being available to purchasers from the company’s facility at Laurieton, NSW.

In the 1950s Messrs T G Adams and Paul Wilson in California designed and developed a single-seat light sporting helicopter for private use. After a prototype was completed and tested, they produced plans for construction of the machine, then known as the Adams Wilson Hobbycopter, for sale to amateur constructors.