Subject:
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Re: 2 speed automatic transmission challenge
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 24 Nov 1998 20:14:45 GMT
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Original-From:
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Alex Brinsmead <ALEXB@TAPRODUCEavoidspam.COM>
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Viewed:
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1918 times
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You could use a 2 speed transmission on each track and use low gear for reverse.
The robot would do a 180 for applications that need more power.
I dont know how well a treaded vehicle would turn with both tracks in a
different gear.
> > > Chris Moseley <lugnet.robotics@lugnet.com> 11/23/98 08:37PM >>> • Dave Forrest wrote in message ...
> Based on this design, http://www.sonic.net/~rci/transmission.htm
> can you come up with a 2 speed automatic transmission.
Um, that's is a device to split the output based on the direction of the
input. Making that into an automatic transmission would be hard I would
think, as you need forward/reverse plus hi/lo, and those are orthogonal
(4 values total).
I'd be tempted to use a gravity-based system - as the motor torque
increases it lifts the motor until it engages a second drive output.
Hmm, can't see an easy way to make it shift down nicely tho.
Perhaps a semi-manual - it shifts when driven the right way with the
right load. Will have to have a play.
Moz
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