Subject:
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RE: Casters
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 22 Aug 2000 18:39:49 GMT
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Original-From:
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Wilcox, Doug <(doug.wilcox@imc)AntiSpam(kesson.com)>
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Viewed:
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413 times
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Very interesting ... this is the opposite of what I would think, but it'll
give me something to play with tomorrow. So, shortening the wheel base might
improve caster performance.
Maybe I'll just take the kids to Wal*Mart and play with the shopping carts,
seeing which combination of forward/backward and pushing/pulling seems to
work best.
--Doug Wilcox
-----Original Message-----
From: Chris Osborn [mailto:fozztexx@fozztexx.com]
Sent: Tuesday, August 22, 2000 2:37 PM
To: Lego-Robotics (E-mail)
Subject: Re: Casters
On Aug. 22 00, 09:24 PDT, "Wilcox, Doug" <Doug.Wilcox@iMcKesson.com>
wrote:
> Can anyone explain to me why front-mounted casters, with the
> powered wheels toward the back of the robot (see photo at
> www.wordsmithdigital.com/mindstorms/diaries.htm ), stay in alignment
> better than rear-mounted casters with the wheels in front? I can't
> quite grok it.
When the vehicle is rolling towards the caster, the caster is much
closer to the drive wheels, and they have a lot more leverage
against the caster to position it where they want.
When it's rolling away from the caster, the caster is so much
farther away that it's harder to leverage it into a straight
position.
This is just a guess though.
---
Chris Osborn Full System, Inc.
fozztexx@fullsystem.com 2160 Jefferson St., #240
http://www.fullsystem.com/ Napa, CA 94559
Webhosting that *works* - 99.99% uptime - First 3 months free
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Message has 1 Reply:
 | | RE: Casters
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| (...) Interesting problem! Be careful with the shopping carts though...the wobbly wheel might skew your tests (every cart has at least one bad wheel!), and the clerks might wonder why you're pushing a cart around backwards. :) Seriously, it might (...) (24 years ago, 22-Aug-00, to lugnet.robotics)
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