Props In vs. Props Out in FPV Drones: Why Propeller Spin Route Issues


FPV drones mix high-speed flying with speedy course modifications. A key drone configuration determination is the propeller spin course, often called “Props In” and “Props Out.” Understanding these configurations can considerably impression your flying expertise. This text discusses the professionals and cons of every.

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What’s “Props In” and “Props Out”?

Props in (also referred to as “customary” rotation): That is the extra conventional configuration the place the propellers on the entrance left and rear proper spin clockwise, and the propellers on the entrance proper and rear left spin counterclockwise. It’s the default in most flight controller software program. And since entrance props spin in direction of the lens, it’s additionally known as “props in”.

Props out (also referred to as “reverse” rotation): On this setup, the rotations of all of the propellers are reversed – the entrance proper and rear left propellers spin clockwise, whereas the entrance left and rear proper spin counterclockwise. Because the entrance props spin away from the digital camera lens, It’s also referred to as “props out”.

Which Is Higher?

Each configurations will take your quad to the sky simply fantastic, no configuration is inherently superior. However understanding the advantages and drawbacks of every configuration will make it easier to make an knowledgeable determination.

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Props in Professionals:

  1. Familiarity: Many pilots discover this setup extra intuitive, because it’s the normal and default configuration utilized in most drones and flight controller software program.

Props in Cons:

  1. Particles on Lens: There’s a better likelihood of particles being thrown in direction of the digital camera lens, which makes the lens soiled over time
  2. Prop Wash: Props in configuration can typically result in extra prop wash, the place the drone flies into its personal turbulent air, probably affecting stability.

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Props Out Professionals:

  1. Enhanced Management: The reverse rotation can present higher management, particularly in tight turns. The profit and impact is particularly noticeable for smaller quadcopters, like tiny whoops and different micro quads with low toque motors.
  2. Much less Obstruction: Decrease likelihood of obstruction by branches and racing gates, as it might simply bounce off obstacles in collisions.

Props Out Cons:

  1. Particles on FC/ESC stack: There’s a better likelihood of particles and grime being thrown in direction of the FC stack
  2. Adjustment Interval: Pilots accustomed to the usual rotation could require time to adapt to the props out configuration.
  3. Turtle Mode Situation: If you use turtle mode, the props runs the wrong way when you find yourself up facet down, and so that you usually tend to get your lens soiled.

Making the Alternative

The choice relies on private desire and necessities.

For tiny whoops and micro quads, props out is beneficial.

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For something bigger than 3″, like a 5″, I’m completely happy to only run the default props in as a result of the advantages in flight traits are much less noticeable. And I don’t should continually remind myself to re-configure the drone after updating Betaflight. Nevertheless different minor advantages nonetheless stay true reminiscent of much less grime will get thrown on the lens and fewer prone to get obstructed by branches and racing gates.

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In case your drone principally hovers on the similar spot, like a DJI Mavic does, then props in or props out make little distinction.

Nevertheless, in the event you encounter unusual flight behaviour and points, particularly in cinewhoops, it’s value experimenting with each props in and props out configurations, this usually is the repair.

Learn how to Reverse Motor Rotation

By default, Betaflight runs “props in”. Some BNF (bind and fly) prebuilt drones would possibly come pre-configured as props out within the manufacturing unit.

To configure your drone to run “props out”, it is advisable go to Betaflight Configurator, Configurations, underneath Mixer, allow “Motor course is reversed”.

Then observe this tutorial to reverse the motor spin course:


Whether or not you select props in or props out, understanding the implications of every setup is essential to optimizing your FPV drone’s efficiency. Each configurations have their deserves and will be efficient in several situations. Finally, it’s about discovering the stability that works finest on your type and wishes.

Edit Historical past

  • Jun 2017 – Article printed
  • Might 2019 – Up to date information
  • Jan 2024 – Up to date information