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| (...) Add on: Also important in all this is the distance the tracks are apart. The further apart the less friction they have, since the radius is larger. Same happens with wheels. Laurentino Martins [ mailto:lau@mail.telepac.pt ] [ (URL) ] -- Did (...) (25 years ago, 26-Jul-99, to lugnet.robotics)
| | | | | Re: Mechanical question
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| (...) Why is this? The further apart they are, the greater r*cos(theta) is going to be for any given theta. Seems like that would make for more turning resistance, not less. (25 years ago, 27-Jul-99, to lugnet.robotics)
| | | | | Re: Mechanical question
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| (...) Because the wheel base length shrinks in relation to the turning radius. It is this distance that causes the friction. The further this point is from the imaginary circle that the treads describe, the more perpendicular friction there is. As (...) (25 years ago, 27-Jul-99, to lugnet.robotics)
| | | | | Re: Mechanical question
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| (...) I'll try to explain this with an ASCII picture, but I'm make no promises about the quality... Please use a fixed font (as you always should in newsgroups) Legend: #### - Lower part of the track (the part that touches the ground). OOOO - Inner (...) (25 years ago, 27-Jul-99, to lugnet.robotics)
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| (...) That makes sense - thanks! (25 years ago, 27-Jul-99, to lugnet.robotics)
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| It makes for more. Don't ask me why, it just does. It kind of reminds me of a great old banjo player i know. When i asked him to break down the way he used his picking hand he said, impatiently, "WHAT'S THERE TO SHOW?! EITHER U JUST PICK UP THE DAMN (...) (25 years ago, 28-Jul-99, to lugnet.robotics)
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| U R My hero (next to my dad). Only problem w/him is that he never explains anything!!! : ) Michael Aaron (...) (25 years ago, 28-Jul-99, to lugnet.robotics)
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| (...) Sure. Based on other comments I've received I'm guessing my previous explaination was a little obtuse. (No pun intended... angles, get it.) Ok, let's see if I can explain this without any pretty pictures. It is getting to be time for bed so (...) (25 years ago, 28-Jul-99, to lugnet.robotics)
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| (...) [lots snipped . By all means, look at the original message! ;-) ] (...) Beautiful stuff! That's what I call an explanation. "progeeks", indeed... :-)) Thanks, Paul! (Incidentally, you're not using a pseudonym? ;-) Best regards, Martin (25 years ago, 28-Jul-99, to lugnet.robotics)
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| Jon Shemitz skrev i meddelandet <379E1AC5.53445703@m...ch.com>... (...) further apart the less friction they have, since the radius is larger. (...) (ASCII Art warning - fixed font on) Just compare these two designs: #-# ! ! X ! ! #-# and (...) (25 years ago, 31-Jul-99, to lugnet.robotics)
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