Vintage R/C Helicopter – Du-Bro Whirlybird 505
Radio Control helicopters had a rough begin again in the early 1970’s. They had been primitive automobiles in comparison to what’s accessible today and just only had adequate controllability to hover or execute slow, ahead flight. This heli is an example of the USA’s 1st commercially created and effective operational product, the Whirlybird 505 intended by Dave Grey and manufactured by Du-Bro, makers of equipment for R/Do design airplanes. There is no gyro linked to the tail rotor as a single would commonly find on a contemporary R/Do heli, the engine rotates on best of the primary rotor and the gasoline tank rotates under the engine with no means of observing fuel degree. If the motor quits, the heli falls as if a supporting string were minimize. Flight time is strictly limited to 6 minutes for safety causes. Thanks go out to Joel Rosenzwieg for shooting this video!
Video Ranking: four / five
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24 Responses to “Vintage R/C Helicopter – Du-Bro Whirlybird 505”
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One up for auction on EBAY.? Whirlybird 505
LOL! ? Awesome!
Have one? for sale New In Box. email fuelfeen@gmail.com
Have one NIB. Looking to sell. Anyone like to? purchase? fuelfeen@gmail.com
I love that helicopter. its quite archaic compared to what is around today but that? is what makes it great. Rest assured, if I ever come across one of these in my travels I am definitely going to buy it and restore it.
that? is awesome, and also very strange to hear, compared to modern day nitros
dude its nice to see wat mankind can do with this stuff even? in the good old days of wat mmalklove said the t rexs greatgrand papa very nice!!i want one!
hillarious! that is awsome! trex’s? great grand papa
@outbackjack1974
The fuel is in the chrome drum directly under the rotor blades. Without being visible, the fuel level can only be determined by doing test flights close to the ground and timing the flight to the point of engine cuttoff. Only after this time is known and a count down timer programmed can you fly confidently knowing how? much is left. This heli drops instantly when out of fuel. No warning, no autorotation.
Very cool heli. I’d enjoy one of these myself. Where does the fuel go in the counter weight? or under the? boom of the engine?
@illbeda1974
It already? is an antique. This is my ‘beater’ 505. I have ones in much better condition. Thank you for your concern.
That thing has to qualify as an antique,better put it away it may be worth something? someday.
just goes to show how far rc helis have come?
This is? amazing, it seems fun.
Nice!?
What’s amazing to me is that there was some jackass,? somewhere, who decided that this was a good design for a radio-controlled heli.
@quakermaas
Bingo!? You’re correct.
@soverato3 I? think one side is the cylinder and the other side is a counter balance for the spinning engine.
Not sure, but that would make sense.
2 cilinders and 1 glow? plug driver ????
@Mr400fe
Simple really. The mainshaft is hollow and there’s a slim pushrod, spring-loaded down (low throttle) that connects to the? throttle arm on the carb and at the bottom end, is being pushed by a little bellcrank incorporating a thrust bearing of sorts where it pushes on the rod. The spring isn’t very strong so freedom of carburetor arm movement is critical. Works perfectly.
Hi, I am very curious? how the throttle is controlled. I have racked my brain trying to figure it out. The entire engine, including carb abd throttle arm are spinning. How are you connecting a pushrod to it for the servo to control it?
does anybody notice the bogey in? the right upper corner right after lift off?? is this an orb??
theres a lot going on there? !!
What a crazy design!? Way cool to see it fly!