Subject:
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Re: Ideal Tank Platform Was: adder-subtractor ????
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 22 Jan 2001 17:38:34 GMT
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Original-From:
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Chris 'Xenon' Hanson <XENON@3ihatespamDNATURE.COM>
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Reply-To:
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(xenon@3dnature.com)avoidspam()
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Viewed:
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470 times
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Nickle, Steven (2511) wrote:
> Distanse between inside edges of the treads: 10 Lego units (this seems to
> be the best distance for in place turning and not having too much flex in
> the axles)
> Length: 20 units (Treads should be centered)
> Ground Clearance: No gearing or Motor housings belew tread axles (Need to
> be able to move on carpet without dragging)
> Balance: Weight from motor should be balanced and within the front and read
> axles if possible (Make it stable driving over obstacles)
> Motors: Single steeing, dual drive acceptable for added torque.
> Frame can extend out over tread, but not much past. (Drive motors pointing
> inward to central gears?)
> Anybody else have criteria they would like to add?
Ideally:
Both motors should be driven in 'forward' direction so if one
had a matched set of motors, you could perhaps achieve lateral
speed balance.
Forward end of tracks should be slightly elevated to grab and
climb obstacles:
<- Front
*
* *
instead of
* *
Of course, this makes the length of the track shorter, and makes
it more prone to tipping backward. Elevated trailing wheels may be
necessary to 'catch' the chassis if it tries to go over backward.
Powering these wheels too would be nice, but I haven't gotten it
to work yet.
I don't have a good camera to send pictures of my trackdrive,
but maybe this will inspire others.
Chris - Xenon--
Chris Hanson | Xenon@3DNature.com | I've got friends in low latitudes!
Learn about the new WCS Version 5! http://www.3DNature.com
"There is no Truth. There is only Perception. To Perceive is to Exist." - Xen
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Message has 1 Reply:
 | | Re: Ideal Tank Platform Was: adder-subtractor ????
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| (...) Well, if you read my *long* post from a week or so ago, you'll know that motor mismatch makes up at least 11% of performance, motor direction perhaps 1% or at most 2%, and HOW YOU BUILD YOUR MODEL accounts for at least 7% ... even when you are (...) (23 years ago, 23-Jan-01, to lugnet.robotics)
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