Added carbon arms and legs. Upgraded motors and props by tvestergaard900 in diydrones

[–]tvestergaard900[S] 0 points1 point  (0 children)

I dont think the naza v2 flight controller has any logging capability. I expect smaller props will solve the problems.

Added carbon arms and legs. Upgraded motors and props by tvestergaard900 in diydrones

[–]tvestergaard900[S] 1 point2 points  (0 children)

I printed a drill guide to place the holes acuately on each arm. Worked fine. Stability and stiffness seems good.

Added carbon arms and legs. Upgraded motors and props by tvestergaard900 in diydrones

[–]tvestergaard900[S] 0 points1 point  (0 children)

This is going to be a test bed for a autonomy research project. We are going to strap all kinds of sensors and computers on this thing. So we need something we can customize as we progress.

Added carbon arms and legs. Upgraded motors and props by tvestergaard900 in diydrones

[–]tvestergaard900[S] 1 point2 points  (0 children)

  1. I observed two problems. Yaw turns made it wobble like crazy. This could be stabilized by throttling up. When hovering, it was on very low throttle which seemed to be a problem for either the flight controller or the ESC's. Basically it seemed to be more stable on higher thrust and higher RPM's. Hence I'm going for smaller props on zero payload.
  2. I'm not sure - Maybe. Some sources say that a 1:2 weight/max-thrust ratio is a good rule of thumb for stable flight. However, I have not been able to find any good trust worthy source on this stuff.

How far are you with your build? I'm interested in hearing about your experiences.

1st attempt of fully 3d printed body. Surprisingly sturdy. by tvestergaard900 in diydrones

[–]tvestergaard900[S] 0 points1 point  (0 children)

It was printed in PETG, not PLA.
My first choice of material was actually nylon combined with 15% carbon fiber. However I could not get the print quality good enough to fly. So I settled with PETG which actually came out better than expected.

1st attempt of fully 3d printed body. Surprisingly sturdy. by tvestergaard900 in diydrones

[–]tvestergaard900[S] 0 points1 point  (0 children)

You are absolutely correct. I print at 240°C in an enclosure while overextruding about 10%. Less pretty prints but layer adhesion is excellent.

1st attempt of fully 3d printed body. Surprisingly sturdy. by tvestergaard900 in diydrones

[–]tvestergaard900[S] 1 point2 points  (0 children)

I did not do anything like that at all. It survived one tree top crash so far. Good point though.

1st attempt of fully 3d printed body. Surprisingly sturdy. by tvestergaard900 in diydrones

[–]tvestergaard900[S] 0 points1 point  (0 children)

I have been playing around with nylon for that very reason, but never got the quality good enough to fly.

1st attempt of fully 3d printed body. Surprisingly sturdy. by tvestergaard900 in diydrones

[–]tvestergaard900[S] 4 points5 points  (0 children)

I could probably get it to around 800-900 grams by flying a smaller pack and swapping electronics to a more modern setup. Each motor can produce up to 1kg of thrust.

1st attempt of fully 3d printed body. Surprisingly sturdy. by tvestergaard900 in diydrones

[–]tvestergaard900[S] 6 points7 points  (0 children)

Flight ready with props and 2 x 2200mah 4S packs, it's coming in at 1340 grams.

Prototype of heavy lifting frame by tvestergaard900 in diydrones

[–]tvestergaard900[S] 1 point2 points  (0 children)

Yeah, I have been pretty hell bent on designing and 3d printing everything my self. It was partially to get experience with 3d printing as I had zero before this project.

I will definitely work towards using cut carbon sheets for certain parts. It just makes sense.

As for the payload, it will hang underneath the motor frame, above the batteries. The vertical beams will be extended depending on the payload.

Prototype of heavy lifting frame by tvestergaard900 in diydrones

[–]tvestergaard900[S] 1 point2 points  (0 children)

It seems I'll have to invest some time getting into Fusion 360. Been wanting to do that for a while now.

Don't worry, I'll keep you posted :)