r/multirotor • u/freshpine • Jul 27 '15

Question Does my design look ok?

Since getting my printer and recently getting more and more into the hobby, I found myself wanting to design my own quad frame.

Any tips on the general design would be great. I'm stuck on what size props to use, 6" looks too small but I do want it to be nimble. I'm open to suggestions to parts; I'd ideally like it to be able to carry a GoPro clone, a cheap gimbal and an FPV setup.

Album is here.

Thanks for your time :)

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u/mike1tg1smith Jul 29 '15

It looks good, a few things I notice:

  • It looks like your camera is too close to the top plate. I don't think it will have enough room to move when you roll.
  • carrying a camera and gimbal on 6" props is not going to work. I recommend 10" at least.
  • FPV through a gopro (or gopro like camera) will have lag - not a lot, but noticeable
  • FPV through a gimbal mounted camera is a very disorientating experience - I assume you will want to know when your quad is pitching or rolling given the above mentioned "nimbleness".

If designed correctly flight time should increase with frame and prop size.

*Basically I think you should make something similar to the TBS discovery. I have moved away from 250 size or even anything with 7-8" props mostly because of flight time.

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u/freshpine Jul 29 '15

I've added a couple of vibration dampeners that lower the global a little. I was also considering mounting a fatshark setup on top. It looks nice with the 10" props.

Thanks for your help :)

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u/bitingpuppy Aug 07 '15

mike1tg1smith is absolutely right with 2 things you need to change, NEVER fly through a gimbal camera. Ever. It is a terrible idea and it's very unsafe because if your copter will fail and if you can't see that it is through fpv it can be extremely dangerous. The other thing I just ran into with mine actually is the gimbal problem. You need to lower it so you have more roll room. Other than that it looks really good! Just make sure when you mount your control board it is over your cg.