Design drawings.

The Adams Wilson Choppy single-seat helicopter is the best homemade helicopter known. Also known as the Flying Triumph or Hobbycopter, this design has inspired many successful homebuilt helicopters such as the Scorpio I and Skytwister. The drawings consist of 40 pages of A4 format, all components are fully detailed and understandable for independent construction of a helicopter.

Replaceable unique helicopter Adams Wadzhelson is the best of the known homemade helicopters. It is also known as the "Flight of Triumph" or "Flight of Triumph", a design that has contributed to the creation of many successful home-built helicopters such as the Scorpio I and Scorpio. The illustrations consist of 40 pages of A-4 format, all components are fully detailed and designed for independent construction of a helicopter.

AH Changeable is one of the most famous about all homemade devices. Developed in the late 50's, AH Changeable was designed to use commonly found materials that were readily available to consumers. Replaceable (also known as) it was designed to use a motorcycle engine producing approximately 50 hp. Various engines were used. Some people even used a snowmobile engine! Newer helicopters typically use ultra-light 2-stroke Rotax engines of approximately 52 horsepower.