To LUGNET HomepageTo LUGNET News HomepageTo LUGNET Guide Homepage
 Help on Searching
 
Post new message to lugnet.org.ca.rtltorontoOpen lugnet.org.ca.rtltoronto in your NNTP NewsreaderTo LUGNET News Traffic PageSign In (Members)
 Organizations / Canada / rtlToronto / 17513
17512  |  17514
Subject: 
Re: Walker useing new leg design
Newsgroups: 
lugnet.org.ca.rtltoronto
Date: 
Mon, 22 Oct 2007 22:23:07 GMT
Viewed: 
17160 times
  
In lugnet.org.ca.rtltoronto, Chris Magno wrote:
Brian Davis wrote:

Thank you! That's actually nice photodocumentation, and I'll try to put one
together based on that. I wonder if for larger structures you might need to go
to beams for some of the connections that are under tension during parts of the
cycle.


I think you need to make one leg - you will be shocked at how well it
preforms. The short answer is no - no need for beams in this leg design.
just the beauty of parallel linkages.

check out philo's gif of the leg motion (the "oval) at the bottom

http://www.philohome.com/theo/tj.gif

the leg is only "taking weight" when the foot is on the ground, and
then, thats when the "back" of the leg is more or less in a line. All
the weight is transfered along the length of the axles "vertically" to
the one point where the entire leg is attached to the frame.

You might find that the beams that pull the leg sideways are under enough
tension with a large version to cause problems though, especially if moving over
difficult terrain.

ROSCO



Message has 1 Reply:
  Re: Walker useing new leg design
 
(...) (Bright blue or bright green in that image depending on direction of travel) ROSCO (17 years ago, 22-Oct-07, to lugnet.org.ca.rtltoronto)

Message is in Reply To:
  Re: Walker useing new leg design
 
(...) > Ha! That wasn't whining, that was just idle wishing! You wait 'till I've got up > a good head of steam, and *then* I'll show you some whining! ;-) > oh yay - next year will be no Cicada's but a room full of Brian whining. I'd like to sign up (...) (17 years ago, 23-Oct-07, to lugnet.org.ca.rtltoronto)

34 Messages in This Thread:












Entire Thread on One Page:
Nested:  All | Brief | Compact | Dots
Linear:  All | Brief | Compact

This Message and its Replies on One Page:
Nested:  All | Brief | Compact | Dots
Linear:  All | Brief | Compact
    

Custom Search

©2005 LUGNET. All rights reserved. - hosted by steinbruch.info GbR