Subject:
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Re: Compact dozer design
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Newsgroups:
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lugnet.technic
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Date:
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Thu, 14 Apr 2005 08:58:03 GMT
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Reply-To:
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orion@orionrobots.co.uk%saynotospam%
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Viewed:
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3643 times
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I built one of these myself - a while ago. The LDraw plans are at
http://orionrobots.co.uk/tiki-download_file.php?fileId=4 although I am
yet to take some photos. My version could definately be made smaller.
I intend to apply the principle to two modified servos in a non-Lego
bot, although I will probably still use the Lego gears.
Danny
--
http://orionrobots.co.uk - Build Robots
On 4/14/05, Ross Crawford <rosscraw@bigpond.net.au> wrote:
> In lugnet.technic, Nathan Bell wrote:
> > In lugnet.technic, Danny Staple wrote:
> > > I dunno - but I really like the compact adder-subtractor drive. I have
> > > been messing with those a lot - and that is very small.
> > > --
> > > http://orionrobots.co.uk - Build Robots
> > >
> > > On Apr 12, 2005 5:06 PM, Nathan Bell <Radarbell@hotmail.com> wrote:
> > > > This is an amazingly small and detailed design. The only question is- why
> > > > did
> > > > they not use 2 pistons to turn the blade?
> > > >
> > > > http://brickshelf.com/cgi-bin/gallery.cgi?f=125056
> >
> > I can't figure out how that adder- subtracter device works. Are they using
> > two
> > motors or one? Do the differentials do all the work?
>
> There appear to be 2 motors. Looking at this pic
> http://brickshelf.com/cgi-bin/gallery.cgi?i=1181220 it appears the top motor
> drives one or other of the 8 tooth gears on the right (probably
> forward/reverse), and the bottom one drives the 8 tooth gear on the left
> (probably steering). The adder/subtractor is very similar to this one I did a
> while ago: http://www.lugnet.com/~469/projects/addsub
>
> ROSCO
>
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Message has 1 Reply:
 | | Re: Compact dozer design
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| (...) What exactly is the advantage of using the adder-subtracter design versus the motor-for-each-track design? Let me guess; does the adder-subtractor design produce slow changes in direction while the motor-for-each-track design only makes quick (...) (20 years ago, 14-Apr-05, to lugnet.technic)
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Message is in Reply To:
| | Re: Compact dozer design
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| (...) There appear to be 2 motors. Looking at this pic (URL) it appears the top motor drives one or other of the 8 tooth gears on the right (probably forward/reverse), and the bottom one drives the 8 tooth gear on the left (probably steering). The (...) (20 years ago, 13-Apr-05, to lugnet.technic)
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