The original prototype, the DH-4 Aerocycle, registered N64N was recently discovered in storage in the building used by DeLackner in Mt. Vernon, New York. This prototype was acquirred by the Evergreen Aviation & Space Museum in McMinnville, Oregon. It is currently in restoration, and we would welcome any information that would help us with the restoration project!
Stewart Bailey Curator Evergreen Aviation & Space Museum
Corey, e-mail, 12.04.2012 02:26
I have one how much is it worth
brinder, e-mail, 09.11.2011 00:41
Anybody know where one can find the original plans for the aerocycle...........
1000km, e-mail, 27.08.2011 16:51
Helmet? Those blades would turn you into hamburger long before your head reached the ground.
lord-ton, e-mail, 26.08.2011 10:29
Scott Etter, e-mail, 21.08.2011 19:54
I had the pleasure if working with Don DeLackner in the 1980's on Apple Valley California , I will remember him as a great man and friend!
@ Joe, I dont think a Helmet would really help in an accident with this beast :D
Guiseppe Paromo, e-mail, 02.01.2010 09:43
I have studied this aircraft extensively. The original designs were actually easier to fly than the later models due in part to the Us army meddling with the design. The orginal had a 20hp water cooled outboard boat engine with open exhaust. Transition to lift occurs around 650 rotor rpm's. It used a planetary gear box below the platform to reverse the rotation of one set of blades. Blades were experimented with largely as was the gearing and pod legs. Original blades were 7.5 feet with the leading tips made of nylon for canceling out the harmonic that would develop. During the testing of this craft there were several serious accidents but none fatal. The final set of blades were 15 feet long with almost 7 foot of nylon making up half the length of the blade. All blades were fixed pitch. When the Us army showed interest in the late 50's the engine was changed to an evinrude V4 making 55 horse power and then increased with the same engine to make 79 horse power. The accidents occured because of tip flexing in response to more horse power which created a substantial harmonic and caused the blades to collide in flight. The pilots were injured severely, but altitude played a part in not causing a fatality due to the accident occuring at about 70-100 feet. The 20 hp version was suprisingly easy to fly even with out trying. Once the engine was runing-the rotors will not turn due to a belt clutch, the operator stands up on the platform and using a belt and leather shoe restrainers, buckles in. Next the clutch handle is released, which allows the rotors to begin to turn. When rotor rpm is stable at around 210 rpm's, the throttle is advanced smoothly to attain 650 rotor rpm. The device will lift off!! As long as you don't lean right, left, back, or forward, the device will hover around 7-12 ft off the ground at around 700 rotor rpm. Leaning in any givin direction, will cause the device to fly in that direction. Flights out of ground effect are harder and not recommended on the 20 hp model. Ground effect limits for the 20hp model are around 20-40 feet.
Yaseff, e-mail, 28.12.2009 16:49
Please send any plans to me at this email address.
I could make great use of this vehicle with flying swords commanded at my feet
lenny clark, e-mail, 27.04.2008 02:11
call me silly but is it a strictly good idea to put a very loosly secured passinger above a big rotating blade shurely this is a recipie for a particluarly un plesent cartoon acsident
David Tuon, e-mail, 04.02.2008 14:27
There must be a company in Spain wich presented a very similar equipment in Paris Air Show 2007. AMAZINGˇˇ. We are working in a prototype, but the rotor aerodinamycs and blade construction (suppouse in carbon)are extremely difficult, and the automatic clutch are very complicated.
jonathan, e-mail, 23.01.2008 15:18
Hello, does anyone has some very precize plans of how to build this 'helicopter'? I need to know every detail. Thanks, Jona
Juan Luis Amilibia, e-mail, 30.11.2007 20:13
Estoy interesado en toda clase de información sobre éste aparato
joe, 09.10.2007 00:36
awesome, no helmet!
kyle bissell, e-mail, 08.08.2007 15:19
If you want to send an email just replace '(@)' in the address with '@' !