Subject:
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Re: Mechanical question
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Newsgroups:
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lugnet.robotics
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Date:
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Sat, 31 Jul 1999 09:17:17 GMT
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Viewed:
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1032 times
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Jon Shemitz skrev i meddelandet <379E1AC5.53445703@midnightbeach.com>...
> Laurentino Martins wrote:
>
> > Also important in all this is the distance the tracks are apart. The • further apart the less friction they have, since the radius is larger.
> > Same happens with wheels.
>
> Why is this? The further apart they are, the greater r*cos(theta) is
> going to be for any given theta. Seems like that would make for more
> turning resistance, not less.
(ASCII Art warning - fixed font on)
Just compare these two designs:
#-#
!
!
X
!
!
#-#
and
#-------------X---------------#
#-----------------------------#
and think about what happens when you try to rotate them around X. Which one
will get the most sideways force on the wheels?
--
Anders Isaksson, Sweden
BlockCAD: http://user.tninet.se/~hbh828t/proglego.htm
Gallery: http://user.tninet.se/~hbh828t/gallery.htm
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Message is in Reply To:
 | | Re: Mechanical question
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| (...) Why is this? The further apart they are, the greater r*cos(theta) is going to be for any given theta. Seems like that would make for more turning resistance, not less. (25 years ago, 27-Jul-99, to lugnet.robotics)
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