7 ms·

I have seen RC helicopter powered by 2-stroke gasoline engine. I wonder why there isn't any Drone use that engine, it basically provide more fly time, more lift

by yq 10y ago

I have seen RC helicopter powered by 2-stroke gasoline engine. I wonder why there isn't any Drone use that engine, it basically provide more fly time, more lift power and short "charge" hours.

duskwuff 10y ago
Balancing and maneuvering a multirotor requires fast, precise control of power output. It's difficult to get that from a gasoline engine.
- RealityVoid 10y ago
  Simple, add a variable pitch propeller. There are people that did it.
  - photogrammetry 10y ago
    If you think adding variable pitch propellers to a multirotor is "simple," you're sorely mistaken :-)
    - baddox 10y ago
      There's not much point in debating what "simple" means, but it has certainly been done. There are collective pitch multirotors that are mass produced, marketed and sold to recreational customers, and quite stable. Granted, most of these still use electric motors. The point is for 3D flying, not the potential longevity of a combustion engine. The first commercially available one I know of (no longer produced): http://www.curtisyoungblood.com/legacy-product-support-curtis-youngblood/attachment/stingray-500/ http://www.curtisyoungblood.com/legacy-product-support-curti... A knock-off of the Stingray: http://www.hobbyking.com/hobbyking/store/__77122__Assault_Reaper_500_Collective_Pitch_3D_Quadcopter_Mode_2_Ready_to_Fly_EU_Warehouse_.html http://www.hobbyking.com/hobbyking/store/__77122__Assault_Re... A big exception: this thing is massive and works with nitro and 2-stroke engines: http://www.curtisyoungblood.com/legacy-product-support-curtis-youngblood/attachment/stingray-500/ http://www.curtisyoungblood.com/legacy-product-support-curti...
  - deleted 10y ago
    [deleted]
  - 6nf 10y ago
    The main reason multiprop electric drones are so cheap and popular is because you didn't need varipitch props any more. Petrol powered drones existed for decades but they were always more expensive and prone to failure than the new electric fixed prop multirotors.

by yq 10y ago

I have seen RC helicopter powered by 2-stroke gasoline engine. I wonder why there isn't any Drone use that engine, it basically provide more fly time, more lift power and short "charge" hours.

duskwuff 10y ago

Balancing and maneuvering a multirotor requires fast, precise control of power output. It's difficult to get that from a gasoline engine.

RealityVoid 10y ago
Simple, add a variable pitch propeller. There are people that did it.
- photogrammetry 10y ago
  If you think adding variable pitch propellers to a multirotor is "simple," you're sorely mistaken :-)
  - baddox 10y ago
    There's not much point in debating what "simple" means, but it has certainly been done. There are collective pitch multirotors that are mass produced, marketed and sold to recreational customers, and quite stable. Granted, most of these still use electric motors. The point is for 3D flying, not the potential longevity of a combustion engine. The first commercially available one I know of (no longer produced): http://www.curtisyoungblood.com/legacy-product-support-curtis-youngblood/attachment/stingray-500/ http://www.curtisyoungblood.com/legacy-product-support-curti... A knock-off of the Stingray: http://www.hobbyking.com/hobbyking/store/__77122__Assault_Reaper_500_Collective_Pitch_3D_Quadcopter_Mode_2_Ready_to_Fly_EU_Warehouse_.html http://www.hobbyking.com/hobbyking/store/__77122__Assault_Re... A big exception: this thing is massive and works with nitro and 2-stroke engines: http://www.curtisyoungblood.com/legacy-product-support-curtis-youngblood/attachment/stingray-500/ http://www.curtisyoungblood.com/legacy-product-support-curti...
- deleted 10y ago
  [deleted]
- 6nf 10y ago
  The main reason multiprop electric drones are so cheap and popular is because you didn't need varipitch props any more. Petrol powered drones existed for decades but they were always more expensive and prone to failure than the new electric fixed prop multirotors.