Subject:
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Re: A better device for tank treads than the adder / subtractor
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Newsgroups:
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lugnet.technic
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Date:
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Fri, 16 Aug 2002 04:24:39 GMT
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Viewed:
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1256 times
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In lugnet.technic, Roy Nelson writes:
> I have a challange for those realy good at using differentials and gears:
>
> The adder / subtractor device is not the ideal device for use in tank
> treads. An ideal device would drive straight forward and back with both
> motors running.
Well, an adder/subtractor (a/s) *does* turn both treads evenly, but only
with one motor driving.
> It would also be able to turn in place with some
> combination of motors running, (maybe one motor or both motors turning in
> opposite directions).
An a/s does this when the drive motor is stopped and *the other* motor turns.
> It would be good if it allowed partial skid steering,
> (both treads turning buy one turning faster than the other).
Controlled by the speed / direction of "turning" motor.
> The above condition may be accomplished by motors directly driving the
> treads but with a mechical link to ensure equal turing when both motors are
> powered. The mechanical link would be broken if only one motor were
> powered, or if the motors where powered to drive the treads in opposite
> dirrections.
This seems much more work than a standard a/s. Check out the a/s section on
this page http://www.lugnet.com/technic/gears for more ideas (under
"Transmissions").
ROSCO
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