Newsgroups: alt.toys.lego,comp.robotics
Path: brunix!news.Brown.EDU!noc.near.net!uunet!pipex!uknet!dcl-cs!davei
From: davei@comp.lancs.ac.uk (Mr D Ingles)
Subject: Re: Legos building legos
Message-ID: <1993Jun29.115354.23127@comp.lancs.ac.uk>
Organization: Department of Computing at Lancaster University, UK.
References: <20mjor$5pf@techbook.techbook.com> <1993Jun28.184642.18125@comp.lancs.ac.uk> <1993Jun28.214249.9530@leland.Stanford.EDU>
Date: Tue, 29 Jun 1993 11:53:54 GMT
Lines: 18

In article <1993Jun28.214249.9530@leland.Stanford.EDU> gyugyi@earthsea.stanford.edu (Paul Gyugyi) writes:

>>Well i don't know about lego but in fischertechnik you can get hydraulics. 
>>Using hydraulics should give you more than enough force to join bricks
>>together.
>>
>Could you fill all the lego pneumatic tubes with fluid and use them as
>hydraulics?  The pump wouldn't work, but you could use an extra
>cylinder as the controller, with maybe a lever to help out.

With Fischertechnik they used to use (probably still do) effectively
two liquid-filled syringes with a tube running between the two. One
syringe is connected to a motor via a rack and  pinion assembly. By
using different sizes of syringe you can therefore  adjust force vs
travel.

Davei

