Mech/Exoskeleton Build (Full-Size )

Discussion in 'Non-Halo Costumes and Props' started by GMer56, Dec 13, 2016.

  1. GMer56

    GMer56 Well-Known Member

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    First test run, found the following issues:

    1) Roll cage is in way of control arms. Solution: add braces to roll cage
    2) Left Pilot cradle shin housing is loose. Solution: add brace to housing
    3) Difficult to insert legs into shin cradle. Solution: see #4
    4) Thighs are too short- pilot reported compression on thigh muscles. Solution: compound (double jointed knee) - will lengthen leg and provide more flexibility
    5) Left arm frozen. Solution: adjust tension on control cables & lubricate.
     
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  2. GMer56

    GMer56 Well-Known Member

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    Built the double jointed shins before the rain got too bad. Will add tension cables when its not so wet.

    IMG_20180722_102405.jpg

    Honestly I was inspired by a gundam kit.

    IMG_20180722_102459.jpg

    Now the feets lay flat on the ground!
     
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  3. Benton188

    Benton188 Well-Known Member

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    It's definitely getting there GMer56. Looks better and better everytime I check in on your post. I may have to pick your brain here coming up towards the end of the year as I plan on building my own large mech. I want to make a Gypsy Danger build, but make it 10' tall and use the same rigging for the arms that your suit uses. But that's later down the road, I haven't even started making the legs yet lol.
     
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  4. GMer56

    GMer56 Well-Known Member

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    If you'd be willing to have a boxing match with 'em its a deal. Depends on when I get the video done of my to challenge Megabots.

    Judd McStudd (My Mech) stands around 9 feet tall.

    IMG_20180722_153229.jpg

    And he fell down again. Must've been those beers last night. Minimal damage though 8)
     
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  5. Benton188

    Benton188 Well-Known Member

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    Yeah he looks a little hung over lol. Also, I think you might win this fight as yours is metal and mine will mostly be PVC and EVA foam...
     
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  6. GMer56

    GMer56 Well-Known Member

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    You'd be surprised how durable Eva foam is: I hit my chestpiece hard several times while wearing and barely felt the impact (not that I recommend it for actual protection).

    Of course, I'm thinking a rockem sockem fight where the goal is to knock the opponents head off.

    Added a stabilizer to the stasis dock so Judd mcstudd doesn't fall down.

    IMG_20180722_183015.jpg

    Added tension cord to compound knees.

    IMG_20180722_182958.jpg

    And braces to the chest cage.

    IMG_20180722_183623.jpg
     
  7. GMer56

    GMer56 Well-Known Member

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    Popped some rivets into the hip joints & added some metal reinforcement to the control arms.

    IMG_20180727_065851.jpg


    Boarded it and didn't feel any discomfort in my hamstrings: compound knees added just the right length and flexibility to the knee and thigh.

    IMG_20180727_065851.jpg

    IMG_20180727_065831.jpg

    Without that metal post the control arms bend like gumby :O

    And tomorrow I'll (hopefully) be able to film a test run. All the rain lately means I'll have to give the elbow cables some lube :oops:
     
    Last edited: Jul 27, 2018
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  8. GMer56

    GMer56 Well-Known Member

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    During the test run and a PVC joint on the ankle popped off. Gonna rivet all of 'em tomorrow.
     
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  9. GMer56

    GMer56 Well-Known Member

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    Strapping is a little funky (tends to slip oddly enough), and the shoulder bolts have bent compromising movement. Probably replace 'em with 3/8" bolts. Haven't given it a loooob job yet XD
    Definitely needs a back cushion!

    Processing video footage now, here's a screenie:

    fullstand.jpg
     
    Last edited: Jul 28, 2018
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  10. GMer56

    GMer56 Well-Known Member

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    Okay, so I did a little more than a test:

     
  11. GMer56

    GMer56 Well-Known Member

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    Added a back cushion. Very comfy.
    IMG_20180729_175321.jpg


    Loooooooobed up the elbow cables too. Hooray!

    When Judd McStudd is laying down you can really get a sense of scale
    IMG_20180729_105244.jpg

    Looking under the dust cover, the shoulder paralellograms were not so paralell. So that's why he seemed drunk.
    IMG_20180729_104649.jpg

    Bolts were really bent!

    IMG_20180729_101255.jpg IMG_20180729_101355.jpg

    Replacing all eight 1/4"x3 shoulder bolts with 3/8" x3 bolts & locknuts. Cost $22! just for 8 pairs!
    IMG_20180729_104856.jpg

    Looking better:


    IMG_20180729_095409.jpg IMG_20180729_095405.jpg IMG_20180729_104427.jpg


    Put rivets everywhere on the right shin. Should come apart anytime soon. Really should've gotten that PVC cement instead.
    IMG_20180728_101414.jpg IMG_20180728_101410.jpg
    IMG_20180727_065851.jpg IMG_20180727_065841.jpg
    IMG_20180728_101421.jpg
     
    Last edited: Jul 30, 2018
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  12. GMer56

    GMer56 Well-Known Member

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    The back cushion is indeed comfy. Too comfy: it puts the pilot too far forward to grab the control arms and barely wriggle into the shins. Gives me an excuse to install a 3rd degree of freedom in the shoulder. Did I mention the cushion is comfy? Because it is.

    sketch share.png

    A rare sketch. oooo. Quick take notes guise!

    It pretty much makes the current parallelogram the anchor point for another paralellogram to shift left and right, transforming any rotational motion by the pilot to horizontal extension/flexion in the shoulder and extending the arms towarms the front by about 4", just the right amount to compensate for the cushion. Gotta get another 100 pak of lock nuts, 20 pak of 3" bolts and 2x 3/4"x8' PVC. Shop shop shop.

    The cushion is comfy :3
     
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  13. GMer56

    GMer56 Well-Known Member

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    Slave parallelogram is proceeding: got the shipment of nylon lock nuts early.

    IMG_20180803_162859.jpg

    Finally got some PVC cement. Meet some permanent connections on the slave stabilizers (man its fun coming up with new terminology!) Don't worry: I wore gloves and a respirator :)

    IMG_20180803_162906.jpg
     
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  14. GMer56

    GMer56 Well-Known Member

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    Judd mcstudd sees you...

    IMG_20180812_133329.jpg

    The arm mechanism is nifty, but impractical atm.

    IMG_20180804_133529.jpg
     
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  15. GMer56

    GMer56 Well-Known Member

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    IMG_20180820_203817.jpg So it finally happened:

    IMG_20180820_203747.jpg

    The shins gave out: pop rivets and gorilla glue won't last.

    See?

    IMG_20180820_203817.jpg

    So I made a new shin subframe to PVC cement tomorrow:

    IMG_20180820_203855.jpg

    Pilot Footprint is 4" longer so my feet can sit comfortably therein.

    And a random rocket:

    IMG_20180820_204013.jpg
     
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  16. GMer56

    GMer56 Well-Known Member

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    Used PVC cement on the shins, and replaced the MDF with a PVC frame (with metal reinforcement) that takes at least 10lbs off each foot.
    IMG_20180826_162724.jpg
    Gonna get some wood underlayment to help pin the panels on and attach the Eva foam soles.
    IMG_20180827_203120.jpg

    The feet look more complicated, but I'm happy with the results... Until I find out I forgot to glue something XD
    IMG_20180827_202649.jpg
     
  17. GMer56

    GMer56 Well-Known Member

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    Doing some more cat watching for my folks this week.
    IMG_20180909_191127.jpg

    So I fit all of this:
    IMG_20180909_124903.jpg
    Into this.
    IMG_20180909_185109.jpg
    Plus clothes and groceries.
    Laying everything out reminded me of this:
    Madox_02.jpg

    Expect a lot of progress this week.

    Assembled the arms, and the cushion is properly mounted! Need to fine tune the arm cables and loosen the webbing.
    IMG_20180909_184915.jpg

    Finished up the feets. Just need fine tuning on the pilot foot cradle angle.
    IMG_20180909_184717.jpg
     
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  18. GMer56

    GMer56 Well-Known Member

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    Just a quick update: looks like I'll be using the mech in haloween show this year, so there might be a slight divergence from the mecha development while I dress it up as a giant demon. Cardboard base, cheap cloth painted skin.
    Maybe something like the baron of hell? Have to contact the grand poobah of the show for details.
    doom2016_baron_of_hell_1_by_giuseppedirosso-da9ne0h.jpg
     
  19. GMer56

    GMer56 Well-Known Member

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    I underestimated the commute to work from my folks place via the interstate. At one onramp traffic daily came to a halt! IN VERMONT!

    Too hot today so I waited till things got shady to do some work.

    Like giving it some sole...

    IMG_20180916_171931.jpg

    Using some heavy plastic for dust covers.

    IMG_20180916_182745.jpg

    Funnily enough, now I have 2 core torso units... Hmmmmm...

    IMG_20180916_182821.jpg
     
    Last edited: Sep 16, 2018
  20. Dirtdives

    Dirtdives Sr Member

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    Hmmmmmmmm........

    giphy-tumblr.gif
     
  21. GMer56

    GMer56 Well-Known Member

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  22. GMer56

    GMer56 Well-Known Member

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    So I am the be the queue entertainment.

    Meanwhile started modeling the low-poly cardboard base:
    thing.png

    Planning to skin it with either cloth or plastic/paper bags. Too bad most of the plastic went out with the garbage last week :/ Might have to purchase some plastic rolls from home depot/aubuchons. And some paint...
     
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  23. GMer56

    GMer56 Well-Known Member

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    Finally did that punching test:
     
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  24. GMer56

    GMer56 Well-Known Member

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    Did a bit of work today securing the leg armor to the subframe, plan on shooting footage tomorrow with the arms and legs together.

    In the meantime I did some tests for motorising the ol' MARDUK (Perhaps A Phase II MARDUK?)

     
  25. GMer56

    GMer56 Well-Known Member

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    Elbows were frozen, spent most of the afternoon freeing them and lubing the cables. I think I'm gonna store those bits under cover from now on. Garage or Van? Tough choice.

    Build the hop half of phase ii Marduk hips.

    IMG_20180922_144743.jpg

    Also made a handy infographic about IRL Mecha. Phase II MARDUK is a Centaur Class, while the USE Frame is a Musume class.

    Mecha Classes_smol.jpg
     

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