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[DPRG] Fwd: Vancouver Robot Sumo Competition

Subject: [DPRG] Fwd: Vancouver Robot Sumo Competition
From: Robert L. Jordan rljordan at airmail.net
Date: Tue Jun 12 16:20:37 CDT 2001

DPRGers,

Bill Harrison sends me his updates. I
sent it to the list as it has some
good info in it.

Lego robot members: Take a look at
the 15cm robot size suggested.

Regards,
Robert L. Jordan
DPRG Prex. 2001



Forwarded From: bill harrison <bill at sinerobotics.com>

> Hi All,
> 
>         Well, I attended my last Robot Sumo contest for this 
season, the
> Vancouver Robot Sumo Contest.  Boy it's been quite a season for me, 
I've
> attended and assisted 10 Robot Sumo competitions, from Los Angeles 
to
> Calgary to Peoria to Tokyo.  It's been very interesting and I've 
learned
> a whole lot about running Robot Sumo contests  :-)
> 
>         This was Vancouver's first year at having an official Robot 
Sumo
> contest. Five Robot Sumo machines showed up to show their stuff, 
all but
> one made from Legos.
>         The Lego Robot Sumos were very well built.  They 
concentrated on
> getting traction and keeping the wheels from falling off (they did 
this
> by putting Lego supports on both sides of the wheels, thus 
constraining
> them from sliding off).  And it worked, they could match the 
traction
> and power of some of my best robots of about the same mass (which 
were
> not made from Legos).
>         The interesting robot, for me, was a robot made from a toy 
or
> something that had two oscillating arms.  The arms would lift up, 
pull
> back, drop down, move forward, lift up again repeatedly.  I think 
this
> made it the most interesting robot there, as it is the same movement
> used by the Human Sumo wrestlers, and I haven't seen this on a Robot
> Sumo  till now.
>         They also introduced an interesting new class (only local so
> far):  a special Lego class.  They can have a mass of 1 Kg, and a 
size
> of 15 cm sq by any height.  The run on the 77 cm Mini Robot Sumo 
ring.
> This seems to work pretty well.
>         The mass of their Lego Class Robot Sumo  is enough to get 
some
> reasonable legos attached.  The 500 grams of the Mini Robot Sumo 
class
> doesn't give much to work with, and the 3000 grams of the Japanese 
Class
> is difficult to afford the cost of enough legos (also it is 
difficult to
> make them powerful and strong enough).  The 15 cm size is good too, 
it
> keeps things small, but gives a little "elbow room" to build with.  
The
> "Brick" alone makes designing a Mini Robot Sumo very difficult 
(though
> possible).  15 cm is enough to make it easy to build an interesting
> Robot Sumo.  I like their using a the Mini Robot Sumo ring too.  
It's
> big enough for the slower moving 15 cm sq Lego powered robots.  This
> means we don't have to have three ring sizes at the contests.
>         I'd like some other groups to try this size and mass out 
for a
> special Lego class Robot Sumo.  Then let me know how it goes (or I 
might
> just see, the next time I'm at your contest).  If this works out as 
well
> at some other contests as it did in Vancouver, let's consider 
opening
> this as a new class.
> 
>         Those in Vancouver were so excited about Robot Sumo, that 
they
> have already invited me to be an official at their Next contest in
> October (so they are planning to continue Robot Sumo contests) :-)
> 
>         Well, now I have to sit down and work on next years rule
> revisions for the Northwest Robot Sumo Tournament.  The revised 
rules
> will be posted before September.
> 
>                 Bill Harrison
>                 Head Northwest Robot Sumo
>                http://www.sinerobotics.com
> 



-- 
Robert L. Jordan (Bob)
www.robotfun.com





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