Subject:
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Re: Homing with the IR Tower
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 26 Jul 1999 20:44:23 GMT
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Original-From:
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Laurentino Martins <lau@mailSTOPSPAM.telepac.pt>
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Viewed:
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1367 times
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At 20:45 26-07-1999 Monday , you wrote:
> > All you need is to put a differential between the wheels.
> >
> > If those wheels need to have traction, all you have to do is to apply the
> > force to the differential itself and the differential will distribute the
> > traction for the two wheels like a real car.
>
> Maybe I did not phrase my problem clearly. It's better described in Jon
> Shemitz's recent post <http://www.lugnet.com/robotics/?n=5804>.
>
> In my experience, wheels are more efficient than treads. Under the same load,
> my wheel-based design outrun my tread-based design. However, without a
> steering mechanism, the "corner" wheels will produce significant sideway drag
> while the robot is turning in place. How does a differential gear solve this
> problem?
>
> (This problem does not occur on the two- or three-wheel designs. However,
> these designs are usually not very stable.)
Have you seen the mars rover turn?
If you have the parts for it, you could add a steering mechanism in the front wheels and another for the wheels in the back.
Humm... that should make an interesting mechanical project :-)
Laurentino Martins
[ mailto:lau@mail.telepac.pt ]
[ http://www.terravista.pt/Enseada/2808/ ]
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 1 Reply:
 | | RE: Homing with the IR Tower
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| (...) The little lift truck in the 8062 Universal set has the same steering mechanism. Just use a standard steeing rack with the steering knuckles on opposite sides of the wheel. Sorry for the inept description, my lids are calling for dinner time.. (...) (25 years ago, 26-Jul-99, to lugnet.robotics)
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Message is in Reply To:
| | Re: Homing with the IR Tower
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| (...) All you need is to put a differential between the wheels. If those wheels need to have traction, all you have to do is to apply the force to the differential itself and the differential will distribute the traction for the two wheels like a (...) (25 years ago, 26-Jul-99, to lugnet.robotics)
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