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I think you're off to a good start! You mention some problems that I think can
be overcome, others I'm not sure about... but I'll offer my two cents anyway...
Edward Cox wrote:
> http://www.brickshelf.com/cgi-bin/gallery.cgi?m=brickfield
> At this stage it is:
> a) too heavy (strain on single motor)
> b) too weak (falls apart from shaking motion)
> c) not agile (only operates on flat surface)
> d) top too heavy - micro motor is under strain to turn/rotate upper body due
> to weight and weakness of single point holding it up.
a) what's your gear reduction ratio? I see a worm gear in there, which is about
the only way to get massive amounts of power in a small space from the
minimotor. Maybe you just need to add one or two more gears into your
drivetrain.
b) I'm sure Eric S. would agree that the only effective way to prevent this is
by cross-bracing your model. Eric Brok's excellent site (where I first saw how
to do this) seems to no longer be in existence, but Dave Baum's first book says
how... darn, I can't find a good link anywhere! But it's easy to do, and your
model WILL NOT FALL APART!
c) check out:
http://www.bea.hi-ho.ne.jp/meeco/biped/bipede.html
this thing could navigate _some_ goegraphy
d) again, gear reduction is the answer I think.
Also, see:
http://www.geocities.com/technicpuppy/hhead/hhindex.html
and
http://www.isogawastudio.co.jp/legostudio/modelgallery_model/a018.html
for more bi-ped ideas.
Keep it up!
stuart
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