Quadrotors and Multirotors

Discussion in 'Shiny Things' started by biggziff, Feb 8, 2013.

  1. Chisenhallw

    Chisenhallw Avowed Pussbag

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    I've narrowed it down to 'earth'. Or 'Baltimore'.
    :lurk

    Please post pics of your build as you go!
  2. CousinLarry

    CousinLarry Ridin Dirty

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    I am doing the same! I've found the aerobatic limits of the DJI Naza.. I am going to keep that as the FPV ship and build myself a little hot rod tri-rotor. Either that or a V-tail design - those look sick too. Either way it will be aerobatic and fast.
  3. DakarNick

    DakarNick Swabee

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    Will do!
  4. DakarNick

    DakarNick Swabee

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    Sweet, let's share any ideas that may help eachother :D

    The V-tails are pretty neat! I think I'll try a T-copter with standard servo-driven yaw control.

    FYI, non-multirotor guys, a tricopter is a y-shaped multi. A T-copter looks like a T. It's more suited for camera work because it the two front arms are straight, not forward-swept.

    I will be at work for snow removal most of tomorrow as we're expecting a blizzard. So, I may as well put the scrap wood in the carpentry shop to use :evil
  5. Saget

    Saget Not quite a full house

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    [​IMG]

    Any of you guys tried one of these yet? Looks pretty interesting. It's not cheap at $229 with GPS, but that's quite a bit less than the NAZA-M controller. It offers GPS waypoints, position loiter, auto takeoff & land, telemetry, data logging, camera control, etc etc.

    http://store.diydrones.com/APM_2_5_Not_Assembled_p/br-apmpwrkt2.htm
  6. biggziff

    biggziff Funk Soul Bruvah

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    http://www.rcgroups.com/forums/showpost.php?p=22572635&postcount=2

    Crius Pro still gets a lot of love as the best bang for buck out there....



  7. DakarNick

    DakarNick Swabee

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    Well, Chisenhallw asked for progress photos of my build. Like I said, I'm stuck at work plowing. So, between plow rounds I hung out in the carpentry shop at work and built this with scrap wood.

    Front arms are 13.5" and each go 3" into the 6" wide body. Rear arm is 15" long and also goes 3" into body. I made a U-shaped slot for the rear to slide into.

    Body is two pieces of 1/2" Gatorfoam or Gatorboard and is 6" wide by 14" long. Ends are tapered. It was scrap. Good thing, too, that stuff is over $3.00 a square foot. Entire body was Gatorfoam but I cut the front ends off and glued on a strip of wood for more strength.

    I copied an RCgroups.com design, the one I linked to in response to Sniper X's cost question.

    Uploading pics in a minute...

    It started with a drawing on the white board
    [​IMG]

    Then off to the shop for scrap. This is what it started looking like.
    [​IMG]

    [​IMG]

    [​IMG]

    And here is where I am now.
    [​IMG]
  8. DakarNick

    DakarNick Swabee

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    Ok, so that last one I built looked pretty good for what I had into it, which was $0 and a few hours work. But it was heavy. 371g (13.08 oz) just for the frame as it sits in the photos. Pretty heavy considering I still need to add three motors, three props, three ESCs, a distro block, battery, FC, servo, yaw mechanism, etc.

    I'm going to start over! This isn't just about being lightweight, but super simple to repair and replace. I bought some 6"x1/4" balsa sheet and 24"x3/8"x3/8" basswood square stock.

    I'll take some pics as I build.
  9. DakarNick

    DakarNick Swabee

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    I feel like I'm just talking to myself, lately :D

    But here are some progress pics. Well, all the pics, really. I didn't stop to take any pics during the build because I am bad at it and usually forget.

    It is simple and the pics will show this.

    The front arms fold back for ease of transport.

    [​IMG]

    [​IMG]

    Tri-copters have three propellers, so that means they will have extra torque in one direction, depending which props you put where. I will be putting two clockwise props on, one on the left front and one on the rear. The right front will be counterclockwise. The front of the T-copter will want to yaw to the right. So, some right cant (angle) will need to be built into the rear prop to bring the tail to the right, the front to the left.

    Yaw mechanism. Servo rotates it on one end. The other end is a 4mm bolt going through a bearing.

    [​IMG]

    More pics as I upload them, stay tuned.
  10. Chisenhallw

    Chisenhallw Avowed Pussbag

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  11. RC Pilot

    RC Pilot Shut up and fly!

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    Anyone try the BP Hobbies Cutlass?
  12. biggziff

    biggziff Funk Soul Bruvah

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    nice work, Nick.
  13. DakarNick

    DakarNick Swabee

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    Thanks!

    Top view

    [​IMG]

    [​IMG]

    Yaw mechanism. I PC-7 epoxied the servo horn onto the stainless bracket and also epoxied the bearing into the end bracket. I'll clean it up before I finish.

    [​IMG]

    [​IMG]
  14. CousinLarry

    CousinLarry Ridin Dirty

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    Sick work so far! I was wondering how tri's handled the yaw problem.. Eeenteresting.

    I am still trying to decide wether I want to build an aerobatic tri or quad, or try to build a hunter V-tail type setup.. I just want sick moves, I find the Naza unit lacking in the aerobatics category!

    Looking forward to your updates. Hurry up and finish it ;D
  15. biggziff

    biggziff Funk Soul Bruvah

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    I'll buy your Naza...then I'll crash it while doing sick moves and video it...
  16. CousinLarry

    CousinLarry Ridin Dirty

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    Hahaha.. I will be keeping the Naza on the current ship, and it will be the aerial video ship.. I'll be building an aerobatic ship IN ADDITION to the naza :)

    And I already thrash that bastard around, I can just tell it's not that great at it.. Kind of like trynig to turn a Honda into a race car or soemthing. haha
  17. Thinc2

    Thinc2 Paciugo

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    Have you tested this shape in a wind tunnel?


    :D
  18. biggziff

    biggziff Funk Soul Bruvah

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    Nice...I just turned the rates up to max (125%) on my MQX tonight in the house. I'm starting to get the hang of this thing...never flew helis much...between the living room and my sim I may actually be able to fly this thing. It really needs more high rate, though...

    My little Crack Yak is awesome...my wife is NOT digging me trying to hover it in the living room. :)
  19. DakarNick

    DakarNick Swabee

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    No sir! No aerodynamics to mess with, no control surfaces, etc. Makes it more fun.

    I think I should be up to about 875-900 grams ready to fly.

    Saget, I may need your help with the yaw control. You're running a KK, correct?
  20. Saget

    Saget Not quite a full house

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    What do you want to know? Looks to me like what you're building should work just fine. I'm actually using a different board on my tricopter, a KK V3.0 rather than the KK2 you have. Seems backwards, but the KK V3.0 is actually an older controller.