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Subject: 
Re: need help
Newsgroups: 
lugnet.robotics
Date: 
Wed, 11 Apr 2001 10:10:41 GMT
Original-From: 
Andy Gombos <GOMBOS_2000@avoidspamYAHOO.COM>
Viewed: 
787 times
  
Steve Hassenplug wrote:



Mike,

With only 4 wheels, you'll find your bot has so much bounce you won't
want to mount your RCX on it.  I can't imagine only 3 wheels.  Here's
a couple that I built along the same lines.

The first one uses 12 wheels for each hub and they are a combination
of large and small wheels, because I didn't have enough of either size
to make them all the same.  (you'll see what I mean)

http://odin.prohosting.com/~hassenpl/Triped2s.JPG



You can use the angled gray axle connectors to connect the axle ends
together.  It looks like a 120 degree one would work, and that should
remove bounce if you have fewer wheels.  What exactly is the point of
having a wheel shaped like this?

Andy

The second is a killough platform

http://odin.prohosting.com/~hassenpl/ThreeWheelBot.JPG

Of the two, I liked the first much better.  It was fairly smooth, and
the wheels were strong.  I tried some 8 wheel hubs in a + before I got
to the 12 wheel star.  Again, very bouncy.

Steve

-----Original Message-----
From:   mike fusion [mailto:mikefusion@hotmail.com]
Sent:   Tuesday, April 10, 2001 3:55 PM
To:     lego-robotics@crynwr.com
Subject:        need help

okay people, need your expertise.

I have a problem that I can't seem to solve.  I'm trying to get a set
of
four wheels (the small skinny ones I forget the name) to float in a
pattern
of such:

                   W
                   W
                   W
                    |
        WWW---WWW
                    |
                   W
                   W
                   W

Well you get the idea.  W=wheel and the other lines are extraneous

the most important thing is that the wheels are mounted such that the
x-axis
(axles) are in a plane to each other and the wheels are free to rotate
along
the z-axis

if there is a way to do this with three wheels off set by 120 degrees
that
would actually be better.

oh, another note, the center must be mountable on an axle or shaft.  I
just
can't seem to get this one.

thanks people.

new page with a small killough platform coming soon.
if you couldn't guess that is what the problem is for, I'm trying to
get the
sound down from the basic leo design.

laters,

mike

--
See my Visual Interface for leJOS at http://lvi.sourceforge.net



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