Photo Courtesy of Joe Richardson, Owner


The Cobra was a further evolution of the Hirobo Falcon and GMP Competitor helicopters introduced in 1984.



Like the Competitor, the Cobra was comprised of approximately 50% American manufactured components, and 50% Hirobo parts. Many of the lower-cost components could be upgraded to higher-performance versions, such as ball bearings, rotor head, and a variety of other components.




A fully-upgraded Cobra with a larger .60 sized engine and "zero-coning angle" machined Competitor rotor head was (perhaps expectedly) very similar in performance to the Competitor. The company dubbed the upgraded Cobra the King Cobra, which was introduced in 1986.




Portion of GMP promotional photo showing the King Cobra (top) and regular Cobra (bottom Right)




GMP Cobra Resources


Assembly / Instruction Manual


King Cobra Manual Addendum


Reference Photo Sheets


Parts List


Mechanical Drawings


Product Registration Card


Reproduction Canopies & Other Parts


Cobra Canopy Stickers


GMP Generic Helicopter Sticker Sheet




this website created in consultation with

the late John A. Gorham and the Gorham Estate


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