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 Building / Mecha / 6932
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Subject: 
Re: anyone got any working chicken walker joint systems?
Newsgroups: 
lugnet.build.mecha
Date: 
Thu, 18 Jul 2002 21:36:05 GMT
Viewed: 
3504 times
  
Mark Nuemann sent me a message, he is in the middle of a new posting setup,
so while he can't personnaly reply to your question at this time, this is
his message to you:

From the King of "Chicken Walker Mecha"
==========================================
From Mark Nuemann:

yep, It can be done.  Some notes for ya,

Gear boxes and the neccessary structure to hold a mech up needs to be pretty
big.  Thunderbird is the biggest most posable mech I built.  Gearboxes in
ankes, knees and hips.  And because the weight is coming down at an angle,
it's gonna need to be strong.  I'm personally fooling with technic
turntables for knee joints myself.

Now I'm going to mention something I learned.  Traditional chicken walkers,
like Battletech/Mechwarrior, are pretty but don't work so good.  Things
bind, the knees don't bend nearly enough to make the thing walk in any
realistic manner.  What works better, add a leg bone!  Really, check out
your dog or cat.  The Rear legs is what you want to imitate.  Allows for
much more articulation and makes a more realistic walking motion.  (hips
don't bind, legs can move forward so it can walk, so on.)  I've got a couple
of mechs that use this (gunslinger, Orc and Beast)  Take a good look at Orc,
particuarily pic o11.

http://www.brickshelf.com/cgi-bin/gallery.cgi?f=21100

He's double jointed in the hip, makes it so that he can traverse terrain,
and keep the body level.  The extra knee makes it so the leg can bend
without binding, and the extra joint in the hip takes care of foot tipping.
(on chicken walkers if you splay out the legs, unless you compensate at the
ankle the foot will tilt up on end slightly)

The smaller guys are held together with friction pins and friction
axle-pins.  The big guys are mostly leg static, with the exception of
Thunderbird:

http://home.attbi.com/~ravenswolfmk/mech/tbird.htm

Who, can be articulated, but you barely notice because of the two lenght
legs.  Also, he was so big and heavy the brick wasn't doing so good at it.
My next big one will have three jointed legs and should be significantly
stronger.

Hope that helps

Mark Neumann




In lugnet.build.mecha, Eric Sophie writes:
For the best and most tasty finger lick'n good Chicken Walkers around , you
must check out the Snow Leopard Clan - The Mechs of Mark Nuemann:

http://home.attbi.com/~ravenswolfmk/

You can also find him in the Lego Mecha Hall of Fame.
Follow the links on the Mecha side bar.

Legomaster
LMHoF

www.mylegomaster.com



Message has 1 Reply:
  Re: anyone got any working chicken walker joint systems?
 
Thank you, Mark, for all those tips. I hadn't thought of gearboxes in the legs--I'll have to try some experiments with that, I think. Your thunderbird mech was very impressive. I was surprised that something do large could have functional legs.:-) I (...) (22 years ago, 19-Jul-02, to lugnet.build.mecha)

Message is in Reply To:
  Re: anyone got any working chicken walker joint systems?
 
For the best and most tasty finger lick'n good Chicken Walkers around , you must check out the Snow Leopard Clan - The Mechs of Mark Nuemann: (URL) can also find him in the Lego Mecha Hall of Fame. Follow the links on the Mecha side bar. Legomaster (...) (22 years ago, 18-Jul-02, to lugnet.build.mecha)

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