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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Wed, 13 Apr 2005 23:16:13 GMT
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Viewed:
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3457 times
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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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| I built one of these myself - a while ago. The LDraw plans are at (URL) 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 (...) (19 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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| (...) 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? (19 years ago, 13-Apr-05, to lugnet.technic)
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