Robotics : 8893


Robotics / 8893	8892 \| 8894

Subject:	Re: Rack and Pinion Steering and idea for precise angle of rotation detection
Newsgroups:	lugnet.robotics
Date:	Thu, 9 Dec 1999 21:52:12 GMT
Original-From:	dave madden <dhm@mersenne.com&StopSpammers&>
Viewed:	480 times

=>> On it (http://www.wordsmithdigital.com/mindstorms/rack-and.htm) is a scan =>> and detailed description of my (at last) finally-successful implementation =>> of a rack-and-pinion type of steering mechanism... I just looked at your pictures, and I wonder if the way you've got the final axles mounted (1x2 gray 2-hole beam, studs into side of 1x6 yellow 5-hole beam) is OK. I seem to recall reading somewhere that the parts fit that way, but that the mating caused deformation of either the studs or the holes if left for a long time. Does anybody else remember that passage? Or am I just inventing excuses for why I didn't think of this nice solution? :-) d.

Message has 3 Replies:

		Re: Rack and Pinion Steering and idea for precise angle of rotation detection
(...) I wonder what a long time is. I've had bricks connected this way in a model for several years now, and the bricks still fit with other bricks just fine. --- Chris Osborn FozzTexx Enterprises 707 226 7629 - Voice 2136 Coronado Ave. 707 581 1797 (...) (25 years ago, 10-Dec-99, to lugnet.robotics)

		Re: Rack and Pinion Steering and idea for precise angle of rotation detection
(...) implementation (...) Don't worry, someone did say that. On page 14 of The Art of LEGO Design (ftp://cherupakha.me...lego.pdf), Fred Martin admonishes us not to do that because the plastic will in fact eventually deform. (25 years ago, 12-Dec-99, to lugnet.robotics)

		RE: Rack and Pinion Steering and idea for precise angle of rotation detection
Following up on this thread from last year... While taking apart my Space Shuttle (I needed the turntable for another project), I noticed that they used this type of connection 4 times. In the tail fin, and in the lift arm in the cargo bay, two (...) (24 years ago, 19-Jan-00, to lugnet.robotics)

Message is in Reply To:

		Re: Rack and Pinion Steering and idea for precise angle of rotation detection
hm.... nice design. I tried to implement this to one of my robots. I think I have to make them bigger.... or your design smaller. And what do YOU do in your christmas holidays??? Stefan pushing important work aside The WordMeister (...) (25 years ago, 9-Dec-99, to lugnet.robotics)

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