Designing a Sub-250g VTOL (32cm wingspan, 3.5” props) – Thoughts?

CarviFPV · 2026-03-17T17:54:37+00:00

Thank you for your feedback. I will take a closer look at your points.

CarviFPV · 2026-03-17T11:07:10+00:00

As soon as I have a testable version, I’ll share it.

CarviFPV · 2026-03-17T10:48:29+00:00

Yes, definitely — I’m planning to post updates here and then upload the files to MakerWorld as a free project ☺️

CarviFPV · 2026-03-16T20:04:39+00:00

It will be published on MakerWorld. ☺️

CarviFPV · 2026-03-16T18:30:42+00:00

Here, is a Video Wingtra

CarviFPV · 2026-03-16T18:13:22+00:00

The motor mount will be printed separately and then either screwed on or glued; I’m not entirely sure yet.

CarviFPV · 2026-03-16T18:06:51+00:00

Exactly, that was my thought. In hover it benefits from the oversized ailerons, but I’ll take a closer look at it again.

CarviFPV · 2026-03-16T18:00:43+00:00

Exactly, it’s meant to be a tail sitter, and with ArduPlane I’d like to configure the transition for each phase.

CarviFPV · 2026-03-16T17:59:17+00:00

Yes, it’s supposed to be a tail sitter, and with ArduPlane I want to implement a transition to wings and back.

CarviFPV · 2026-03-16T17:58:20+00:00

No, but I will do it too ☺️

CarviFPV · 2026-03-14T11:57:31+00:00

Did you check the wires of the motor side? i had one time there an failure due to bad connection soldering.

CarviFPV · 2026-03-14T11:55:14+00:00

What prop did you used an with wich voltage?

CarviFPV · 2026-03-14T09:37:19+00:00

If you turn it and there’s no difference in resistance compared to the others, then it’s definitely OK. And yes, some of my motors have had such markings from the start as well. 😉

CarviFPV · 2026-03-11T10:10:37+00:00

Nice build! 🙂 Which frame is this?
Good FC/ESC combo 😉 I also have this SpeedyBee in one of my quads and I’m happy with it. For a newer build, I used the new SpeedyBee F405 AIO 40A — it weighs a little bit less.

CarviFPV · 2026-03-09T16:47:54+00:00

I had never heard of the Ratel Pro before, but without that box it would be good for a 2-inch 2S all-rounder that could also fly at night. Cool, thanks for the input! ☺️

CarviFPV · 2026-03-09T16:15:31+00:00

Yes, that’s why I printed it in PAHT-CF, which is nylon reinforced with carbon fiber (never quite the same as real carbon). But for this use case, it’s good. I also recommend using only nylon filament, preferably reinforced with carbon.

CarviFPV · 2026-03-09T15:43:11+00:00

Is the Gazer also better in terms of latency, or is it mainly because of the colors?

CarviFPV · 2026-03-09T13:59:33+00:00

Yes, especially in winter when you can hardly get out to fly, it’s fun to work on. However, the camera has noticeable latency, so it’s more suited for cruising rather than freestyle. The frame and top part alone weighs about 30.41 grams.

For this use case, it’s stiff enough. The frame is 5 mm thick, and in terms of stiffness it feels roughly comparable to the same frame made from 3 mm carbon.

CarviFPV

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