Welcome to 3DRPilots.com

Sign up and join the largest 3D Robotics drone community!

x8 weight loss program

Discussion in 'X8+ Discussion' started by pyrate, May 26, 2016.

  1. pyrate

    Joined:
    May 4, 2015
    Messages:
    4,155
    Likes Received:
    1,628
    Location:
    Frisco Texas
    just finished rebuilding my x8 onto a tarot 650 frame
    I shed 1.7 lbs off the weight of the bird including battery

    trying to find some descent 700kv motors now
    should give lots of lift or flight time depending on prop
     
  2. RichWest

    Joined:
    Jun 18, 2015
    Messages:
    2,163
    Likes Received:
    1,055
    Location:
    Chouston, Tejas
    What reason(s) made you choose the Tarot frame?
     
  3. pyrate

    Joined:
    May 4, 2015
    Messages:
    4,155
    Likes Received:
    1,628
    Location:
    Frisco Texas
    seemed solid enough and popular, price was right for a first time attempt at something like this.
    You have to remember, my first RC anything was the solo less than a year ago
     
  4. RichWest

    Joined:
    Jun 18, 2015
    Messages:
    2,163
    Likes Received:
    1,055
    Location:
    Chouston, Tejas
    Sure, no problem, got to start somewhere. Look forward to reading more from your build.
     
  5. pyrate

    Joined:
    May 4, 2015
    Messages:
    4,155
    Likes Received:
    1,628
    Location:
    Frisco Texas
    I will have pictures this weekend, and hopefully a maiden
    Most of the guys on FB are betting on a crash. I don't doubt it
    But then again I may nail it
     
  6. Jubalr

    Joined:
    Jun 4, 2015
    Messages:
    2,904
    Likes Received:
    1,699
    Tarot is a good frame. For motors, I always had good results from Sunnysky. Used their 400kv on my 800 size Hex. They were very smooth and quiet.
     
    pyrate likes this.
  7. pyrate

    Joined:
    May 4, 2015
    Messages:
    4,155
    Likes Received:
    1,628
    Location:
    Frisco Texas
    Well made a choice to use castle creations escs looks like a bad move could not get to calibrate. they don't play well with pixhawk
     
  8. Jubalr

    Joined:
    Jun 4, 2015
    Messages:
    2,904
    Likes Received:
    1,699
    Sorry to hear that Pyrate. For my PH builds I used Maytech ESCs. Very good product. A little pricier, but worth it.
     
    pyrate likes this.
  9. pyrate

    Joined:
    May 4, 2015
    Messages:
    4,155
    Likes Received:
    1,628
    Location:
    Frisco Texas
    yeah these were pricey, should have done my research better.
    Part of the game I guess.
     
  10. pyrate

    Joined:
    May 4, 2015
    Messages:
    4,155
    Likes Received:
    1,628
    Location:
    Frisco Texas
    well color me silly
    got them to fire, I had the trim set wrong on my radio (beginner alert)
    still will not calibrate in PH
     
  11. pyrate

    Joined:
    May 4, 2015
    Messages:
    4,155
    Likes Received:
    1,628
    Location:
    Frisco Texas
    lts aliiiiiiive
    and it actually flies but needs some serious tuning
     
    RichWest likes this.
  12. rcglider

    Joined:
    Jul 7, 2015
    Messages:
    47
    Likes Received:
    13
    What is the AUW? Bare frame weight? I have a Sky Hero 750 Y6 which flies very stable but is also heavy. I bought a 3DR X8 frame kit during the fire sale. The bare frame is ~750g.

    I use KDE motors which have been very reliable, so was considering transferring them and the Pixhawk from the Y6 and make a X8. Finding a light yet strong frame is not easy.
     
  13. pyrate

    Joined:
    May 4, 2015
    Messages:
    4,155
    Likes Received:
    1,628
    Location:
    Frisco Texas
    I have some serious tuning to do
     
  14. rcglider

    Joined:
    Jul 7, 2015
    Messages:
    47
    Likes Received:
    13
    What version AC are you using?

    LOL I liked the trampoline bounce off the grass....must have been testing the landing gear?

    When I first put my big Y6 together, I couldn't even get it to stay stable enough to tune it, so yours isn't that bad.

    What's the ThrOut look like at hover? RCOU? Post a log file if you want.
     
    #14 rcglider, Jun 5, 2016
    Last edited: Jun 5, 2016
  15. pyrate

    Joined:
    May 4, 2015
    Messages:
    4,155
    Likes Received:
    1,628
    Location:
    Frisco Texas
    3.3.3
    On a FY650 frame with an extra deck
    AUW with battery no payload it is 6.7 lbs
    one pound less than the 7.7 lb 3dr X8

    running the 800KV motors that were stock on the x8 on castle creations 35S Phoenix ESCs
    Right now I am looking at sunnysky 3508 700Kv on 13 inch props as a replacement
     
  16. Jubalr

    Joined:
    Jun 4, 2015
    Messages:
    2,904
    Likes Received:
    1,699
    Sounds good @pyrate. Should be a good frame for you. Going to try the 'Auto Tune'?
     
  17. pyrate

    Joined:
    May 4, 2015
    Messages:
    4,155
    Likes Received:
    1,628
    Location:
    Frisco Texas
    first thing I am going to do is recalibrate it all.
    This morning trying to get the failsafes working after I hosed them, I reloaded a saved parameter file.
    I am hoping that is what caused the instability. If that don't work I may just try autotune. the guys over in FB seem to thing it was flying fine