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Nimbus 1800 vectored yaw VTOL maiden


(Andras Schaffer) #1

Hi Guys,
I successfully maiden my new VTOL plane. Thanks to Tridgell and all developers who made it possible with the great ArduPlane sw.

The idea come from a youtube video, unfortunately the poster dissapeared after posting the video, so I had to figure out most of the things. Fortunately I’m pretty familiar with the ardupilot code and posts in the VTOL topic helped a lot as well.

Why the NIMBUS is ideal for VTOL ? Because the motor mounts are easily modifiable to VTOL without adding any significant weight. The total VTOL conversion adds about 360g to the original weight.

It needs some tuning (Try 3.8.2, Set transition airspeed higher, autotune, etc etc…) but even without fine tunings it flies basically out of the box…

(Andras Schaffer) #2

For those who interested, this was the original video that started all…

(Rolf) #3


Congratulations. Nice maidenflight.


(wkf94025) #4

Fantastic! Congrats. Is there a build log of your Nimbus VTOL? More photos please!


EDIT: I am building my first MyTwinDream, which I know you know. Could an MTD be VTOL’d? I am planning on landing gear on my first MTD. The landing gear weighs a little over 400g. If I could replace that with ~400g of third motor, ESC, prop, and articulation of two front motors, that would be a clear win.

(Andras Schaffer) #5

I owe an apology for Kris Shyi, he is the guy who made the first vtol nimbus, he did not disappeared, in contrary, he is very active on a Chinese forum and posted some updates on youtube as well, (Which I obviously missed.)

(Andras Schaffer) #6

I think MTD is out of the question. (At least as a vectored yaw, trimotor VTOL) It has a quite fat rear fuselage, which makes impossible to install the rear rotor. Plus the motor mounts are not connected to the wingspar…
A good airframe for this type of conversion needs a tail boom, like Skywalker, EVE200 or Nimbus…

(Iam) #7

Great job. I was looking at building a Y3 tilt rotor with my Skywalker, but I see how the Nimbus has the perfect wing installation already, just booms projecting out of the wings.
What prop/motors did you use? Is the tail prop/motor the same as the others?
Thank you for sharing.

(Andras Schaffer) #8

It’s work in progress, current props on the front having low pitch, must change to 14x8 or similar.
prop on the back could go up to 16’’ 17’’ pitch is not relevant.
Motors are T-motor U5’s…

(김형진) #9

Hi, I’m building a Nimbus 1800 VTOL With Pixhawk2 and I have some questions.
We are making a nimbus So can we know about that setted value for parameters Q_FRAME_CLASS, Q_TILT_MASK, Q_TILT_TYPE ?
Because we are not sure about that

(Andras Schaffer) #10

Frame class is 7.
For setting tilt variables look at this post : Tiltrotor support for plane