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From: davidlee@anatomy.ucl.ac.uk (David Lee)
Subject: Re: Roller Ball wheels
Sender: news@ucl.ac.uk (Usenet News System)
Message-ID: <1995Mar15.162203.50416@ucl.ac.uk>
Date: Wed, 15 Mar 1995 16:22:03 GMT
Reply-To: davidlee@anatomy.ucl.ac.uk
References: <795270376.45@cs.york.ac.uk>
Organization: Anatomy Department, University College London
Lines: 33


>I need stabilising wheels for a robot that has two
>drive wheels and will topple if there isn't a wheel
>at the front and back.
>
>At the moment the only appropriate wheel is a castor
>wheel. However this has problems when you attempt to
>'push' a castor, rather than let it trail the drive
>mech.
>
>A roller ball would solve this problem. Do they exist
>however?
>
>Cheers
>Ben
>
Ben,

My robot uses roller ball units made by "Alwayse" in Birmingham.
They do the job nicely. I don't know how big your robot is, but the
units come in a range of sizes which support masses up to 2000kg!

The address is: Alwayse Engineering Limited
                Warner Street
		Birmingham B12 0JG
	
		Phone:	0121-772-8481
		Fax:    0121-771-0327

Good luck with the robot,
David


