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  1. GreggC

    Joined:
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    Location:
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    Hey guys,
    This prop balancer is the same principal as the
    Ultimate P3 prop balancer I built a few months ago (see link below)
    One very small point of contact resulting in the least friction possible.
    I used the Top Flight prop balancer, the balance shaft is .125 (1/8")
    I turned the shaft down to .116 and the fit was perfect, I'd turn down to .118
    first and go from there to account for any difference in vernier calipers,
    you want the fit to be a light press in fit by hand, no slop or that will
    affect the "center" and wont balance correctly.
    Note the air gap, it about .060

    [​IMG]

    The Ultimate P3 Prop Balancer
     
    Ron Davis, Jussaguy and okestone like this.
  2. 10jqkadiamonds

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    Very nice. Any observations regarding the balance of the DJI props?
     
  3. GreggC

    Joined:
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    Location:
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    I balanced 12 P4 props, 3 were perfect, the rest were blade down out of balance. (thats a lot)
    I'm a firm believer in balancing props, I can go on and on regarding the benefits of balancing a rotating mass.
     
  4. 10jqkadiamonds

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    Did you use a lathe or just spin the shaft in a drill?
     
  5. GreggC

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    Location:
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    I spun the shaft in a drill and used a fine file to groom it to .116
    I groomed a total length of 1/2",
    I used vernier calipers to check the diameter at the tip and at
    the opposite end, I got .116 at both. I was pleased with that.
     
  6. 10jqkadiamonds

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    Great! Thanks for the "tutorial", I'm going to have a go at it. Very helpful.
     
  7. doctordrone

    Joined:
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    Nice work! You should be an aircraft mechanic!
     
  8. 10jqkadiamonds

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    I got one of these balancers and modified it as GreggC suggested. It worked perfectly. One big disappointment for me...all 8 props I checked were in balance. Checked them twice. I was really looking forward to balancing some props....
     
  9. Jussaguy

    Joined:
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    Awesome! I want one. Are we selling these or are we being dirty socialists and I can get this on thingverse

    I love it. ^^^Sarcasm above. I always feel like I'm not giving enough love to my props. For example, yesterday for the first time ever I chopped up some leaves with my props and didn't know if I should keep using them or not. Everything seemed fine.
     
  10. GreggC

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    Location:
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    Sorry buddy,
    Not selling,
    Your on your own to build it !!
     
    dirkclod likes this.
  11. Jussaguy

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    Build it? I barely know what it is.