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Jello with H3-3D but nothing with H3-2D

Discussion in 'Zenmuse H3-3D/H4-3D GoPro Gimbal' started by Prime12, Mar 3, 2015.

  1. Prime12

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    I recently upgraded from H3-2D to H3-3D and now I am getting jellos in my videos that did not exist with H3-2D.

    I had 4 flights with my H3-3D, all at the same location I had used the H3-2D before. Similar amount of sunlight and wind. ALL my H3-3D videos have varying amount of jello :evil:.

    They are mostly noticeable when I am in forward flight or making banked turns. There is almost none when I am just hovering.

    Everything except the gimbal is the same. Same propellers and same motors. I did NOT have any crash or tip-over between the time I switched from H3-2D to H3-3D.

    So, what gives? My theories are:

    1. The additional weight of H3-3D over H3-2D (around 35-40g according to my kitchen scale) is throwing off flight controller gain values and I need to readjust them.
    2. H3-3D is just more vibration prone due to it having an additional motor for the yaw axis (meaning I have to just live with it).
    3. My H3-3D is defective (doubtful).

    I'd appreciate any input.
     
  2. Jacob

    Jacob Administrator
    Staff Member

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    Which color rubber dampeners are you using? Different ones can help with vibrations.
     
  3. Mako79

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    +1.
    Run default gain settings and try the h33d supplied stiffer dark grey dampeners.
     
  4. wkf94025

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    Unfortunately for us all, #2 is the correct theory. Many of us experienced significant jello with our first H3-3D that we never saw with their H3-2D. Balance props, balance motors, use ND filter(s), counterbalance filters, reduce gains, run 60fps or higher, and fly as smoothly as you can in ATTI. On windy days try down-wind drift in ATTI. Yaw in place is usually free of jello, while upwind flying usually the worst.

    Kelly
     
  5. Prime12

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    Ok here are some things I have tried.

    1. Stock white dampers - horrible vibrations and jello
    2. H3-2D black dampers - video no longer shakes but there are still lots of jello
    3. Grey dampers - best so far, almost no jello when hovering
    4. 50 degrees black dampers - worse than #3 but better than #1
    5. Pitch / Roll gain lowered to 105% from 125% - some improvement but jello still present
    6. 50 degrees black dampers w/ foam earplugs stuffed into them - similar to #3

    I film at 2.7k 30fps. I suppose I can go down to 1080p at 60fps but I'd like to keep it at 2.7k if possible.

    I balanced my props the first day I got my phantom.
     
  6. mikeisi

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    How do you "balance props"? I've heard of a lot of people doing this. What do you mean by it?
    thanks

    -Michael
     
  7. mikeisi

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    How do you "balance props".