Hi.  I am working on a two rotor design with the hopes of having some efficiency gains by using two larger rotors.  I have always heard that fewer larger rotors are more efficient than more, smaller rotors and took that for granted.  Now that I am actually exploring the idea, I am finding it hard to justify.  It seems that disk loading is the major factor and not individual disk size.  For example, a 12 inch rotor will fit inside of a 12x12 inch area, and so will four, 6 inch rotors.  The problem is that the single 12 inch and the four 6 inch rotors have the exact same amount of disk area, and both fit into the same 12x12 inch area.  Messing around on ecalc seems to verify similar hover efficiency between the two.

So my question is, where am I going wrong here?  Is my math bad?  Is disk loading the main factor and one large rotor is not any more efficient that four smaller ones as long as disk area is the same?  Any help or insight would be greatly appreciated...

### Activity

DIY Robocars via Twitter
RT @gclue_akira: 柏の葉で走行させてるjetracerの中身　#instantNeRF #jetracer https://t.co/giVvuE4hP7
Jul 4
DIY Robocars via Twitter
Cool web-based self-driving simulator. Click save when the AI does the right thing https://github.com/pncsoares/self-driving-car
Jul 4
DIY Robocars via Twitter
RT @donkey_car: Human-scale Donkey Car! Hope this makes it to a @diyrobocars race https://www.youtube.com/watch?v=ZMaf031U8jg
Jun 25
DIY Robocars via Twitter
RT @GrantEMoe: I won my first @diyrobocars @donkey_car virtual race! Many thanks to @chr1sa @EllerbachMaxime @tawnkramer and everyone who m…
Jun 13
DIY Robocars via Twitter
RT @gclue_akira: JetRacerで自動走行したコースを、InstantNeRFで再構築。データセットは別々に収集 #jetracer #instantNeRT https://t.co/T8zjg3MFyO
Jun 13
DIY Robocars via Twitter
RT @SmallpixelCar: SPC 3.0 Now the motor also works. This car is doable. I just need to design a deck to mount my compute and sensors. http…
Jun 13
DIY Robocars via Twitter
RT @SmallpixelCar: My new car SPC 3.0. https://t.co/CKtkZOxeNQ
Jun 7
DIY Robocars via Twitter
RT @SmallpixelCar: High speed at @diyrobocars thanks @EdwardM26321707 for sharing the video https://t.co/o4317Y2U1S
Jun 7
DIY Robocars via Twitter
RT @SmallpixelCar: Today at @RAMS_RC_Club for @diyrobocars. Used @emlid RTK GPS and @adafruit @BoschGlobal IMU. Lap time 28s https://t.co/R…
May 28
DIY Robocars via Twitter
May 13
DIY Robocars via Twitter
RT @f1tenth: Say hi to our newest #F1TENTH creation for @ieee_ras_icra next week in Philly. It’s going to be huge! 😎 🔥 @AutowareFdn @PennEn…
May 13