Subject:
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Unidirectional gearing - was Synchro drive in Lego
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 14 Jan 1999 16:37:50 GMT
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Original-From:
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Medical Informatics Consulting <medinfo@aros.*nospam*net>
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Viewed:
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1448 times
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Here's a really simple (but not fool-proof way):
Feed the motor output into a differential gear. The output from the
differentials run out through beams and have a medium gear just outside
the beam. Then suspend another beam
from one end using a single regular peg in the last hole on the beam. The
other end of the beam engages a medium sized gear. Just repeat in the
opposite direction on the other side.
So the outside looks something like this:
Basic Frame Side View of ratchet
Beam Beam _
|| || ---------/-/------
|| Diff || O O O O/O/O O O O
#|| [ ^ ] ||# -------/-/--------
-#||-[{ }]-||#- ------/-/---------
#|| [ ] ||# O O / / O O O O O
|| $$$$$ || Med. Gear ----/-/-###-------
|| | || ----\/#######-----
MMMMM O O ######### O O
Motor ------#######-----
--------###-------
O O O O O O O O O
------------------
Hope this makes sense.
the proble with this method is that it will in time ruin the ratchet beam
and the ratchet gear.
You can also check out:
Michael Powells's transmission page at:
http://www.sonic.net/~rci/transmission.htm
Matt Sailors
medinfo@aros.net
On Thu, 14 Jan 1999, Paul Speed wrote:
> S. Crawshaw wrote:
> >
> > On Thu, 14 Jan 1999, Paul Speed wrote:
> >
> > > one of those fancy turntable thingies. What I ended up with was
> > > something like this:
> >
> > > My original thinking was to try and figure out a way to
> > > get the whole assembly to want to drive rather than turn without
> > > any linking to the plate. (Unfortunately, even with enough
> >
> > could you not (I haven't tried this!) use a ratchet on the assembly so
> > that axle rotation one way turns the assembly, and the other way drives
> > the wheel?
>
> Yeah, but I can't think of a good way to ratchet the
> assembly.
> -Paul (pspeed@augustschell.com)
>
> >
> > Stuart
> >
> > --
> > Did you check the web site first?: http://www.crynwr.com/lego-robotics
> --
> Did you check the web site first?: http://www.crynwr.com/lego-robotics
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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