G+_Todd Lipker Posted September 25, 2015 Share Posted September 25, 2015 Here's is an open source quad copter. https://hackaday.io/project/1230/gallery#6614bcfe39b016cca9a8af93fc2d6888 Link to comment Share on other sites More sharing options...
G+_Steve C Posted September 25, 2015 Share Posted September 25, 2015 My dad built a lawnmower like that once when I was a kid! Link to comment Share on other sites More sharing options...
G+_Fr. Robert Ballecer, SJ Posted September 25, 2015 Share Posted September 25, 2015 I have become death... The destroyer of quadcopters Link to comment Share on other sites More sharing options...
G+_Jason Marsh Posted September 25, 2015 Share Posted September 25, 2015 It could work, but I wouldn't try it myself. Can you imagine the mayhem if you got snagged by one of those props while trying to reach in and open the choke? Rather than the vanes for directional control and props that all rotate at the same speed, I'd be more inclined to build with a smaller, lighter, higher-revving engine driving a relatively small generator, a lightweight battery, and electric motors for the props. Link to comment Share on other sites More sharing options...
G+_Jason Marsh Posted September 25, 2015 Share Posted September 25, 2015 Wayne Hobbins That's one of the reason's I'd lean toward gas-electric powertrain over belt-drive gas power. Stable flight is going to require quick and deft operation of the controls, and I'm not so sure this setup is going to provide that. A V-twin engine like that doesn't spin up nearly as quickly as an electric motor, either, so quick changes in power output are out the door. A gas-electric power source with a lightweight storage battery would provide plenty of surge power capacity for punching out or quick maneuvers. Energy density of hydrocarbon fuels still surpasses that of batteries AFAIK, so should have longer flight time than all-electric. Link to comment Share on other sites More sharing options...
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