LEGO TECHNIC : 16052


Technic / 16052

Subject:	Inchworm 4
Newsgroups:	lugnet.technic, lugnet.announce.moc
Followup-To:	lugnet.technic
Date:	Wed, 26 Dec 2007 00:39:01 GMT
Highlighted:	(details)
Viewed:	32351 times

I was playing with pneumatic piston and switch linkages trying to improve on the geometries I've developed in the past. This lead to inchworm 4. http://www.brickshelf.com/gallery/kclague/inchworm4/sta_0764.jpg Inchworm 4 has two waves travel down its body like inchworm 3 http://news.lugnet.com/technic/?n=16051 The big difference is the design of an individual body segment, which ends up looking like a 7. A typical linkage involves a beam running parallel to the piston, with the piston offset from the beam and hooked to a switch. http://www.brickshelf.com/gallery/kclague/inchworm3/hpim0057.jpg Inchworm 4 has the piston in-line with the supporting beam. A lever hooks the piston to the switch, as seen here: http://www.brickshelf.com/gallery/kclague/inchworm4/hpim0051.jpg The orange 1x5 thick beam in the middle is the lever that hooks the piston to the switch. This new design makes for a very sleak and simplified than that in inchworm 3 (IMHO). There are more pictures here: http://www.brickshelf.com/cgi-bin/gallery.cgi?f=291660 For some of my old and dear friends, please notice the use of a wide variety of colors (does John Barnes have enough time to read technic anymore?) PLMKWYT, Kevin

Subject:	Re: Inchworm 4
Newsgroups:	lugnet.technic
Date:	Wed, 26 Dec 2007 01:04:42 GMT
Viewed:	9385 times

In lugnet.technic, Kevin L. Clague wrote: > I was playing with pneumatic piston and switch linkages trying to improve on the > geometries I've developed in the past. > > This lead to inchworm 4. > > http://www.brickshelf.com/gallery/kclague/inchworm4/sta_0764.jpg > > Inchworm 4 has two waves travel down its body like inchworm 3 > > http://news.lugnet.com/technic/?n=16051 > > The big difference is the design of an individual body segment, which ends up > looking like a 7. A typical linkage involves a beam running parallel to the > piston, with the piston offset from the beam and hooked to a switch. > > http://www.brickshelf.com/gallery/kclague/inchworm3/hpim0057.jpg > > Inchworm 4 has the piston in-line with the supporting beam. A lever hooks the > piston to the switch, as seen here: > > http://www.brickshelf.com/gallery/kclague/inchworm4/hpim0051.jpg > > The orange 1x5 thick beam in the middle is the lever that hooks the piston to > the switch. > > This new design makes for a very sleak and simplified than that in inchworm 3 > (IMHO). > > There are more pictures here: > > http://www.brickshelf.com/cgi-bin/gallery.cgi?f=291660 > > For some of my old and dear friends, please notice the use of a wide variety of > colors (does John Barnes have enough time to read technic anymore?) > > PLMKWYT, > > Kevin I forgot to mention that Inchworm 4 can inch forward or backward by flipping the polarity reversors on its head. http://www.brickshelf.com/gallery/kclague/inchworm4/hpim0017.jpg http://www.brickshelf.com/gallery/kclague/inchworm4/stc_0766.jpg Kevin

Subject:	Re: Inchworm 4
Newsgroups:	lugnet.technic
Date:	Wed, 26 Dec 2007 19:53:04 GMT
Viewed:	9749 times

Looks great! How about some video so we can see how it works?

Subject:	Re: Inchworm 4
Newsgroups:	lugnet.technic
Date:	Thu, 27 Dec 2007 15:11:02 GMT
Viewed:	10169 times

In lugnet.technic, Gordon Buchanan wrote: > Looks great! How about some video so we can see how it works? I'm working on postin videos today. Kevin

Subject:	Re: Inchworm 4
Newsgroups:	lugnet.technic
Date:	Thu, 27 Dec 2007 16:12:27 GMT
Viewed:	10473 times

In lugnet.technic, Gordon Buchanan wrote: > Looks great! How about some video so we can see how it works? Here is a youtube video of inchworm 4 crawling forwards http://www.youtube.com/watch?v=_Zz1Sh9lNZA Here is inchworm 4 crawling backwards http://www.youtube.com/watch?v=rDkBJ1QujQA PLMKWYT! Kevin

Subject:	Re: Inchworm 4
Newsgroups:	lugnet.technic
Date:	Thu, 27 Dec 2007 22:48:35 GMT
Viewed:	10469 times

Kevin L. Clague wrote: > In lugnet.technic, Gordon Buchanan wrote: > > Looks great! How about some video so we can see how it works? > > Here is a youtube video of inchworm 4 crawling forwards > > http://www.youtube.com/watch?v=_Zz1Sh9lNZA > > Here is inchworm 4 crawling backwards > > http://www.youtube.com/watch?v=rDkBJ1QujQA > > PLMKWYT! > > Kevin WOW - Kevin, nice work on the crawlers. Thank you for posting the video's. Pictures can only say so much. Chris

Subject:	Re: Inchworm 4
Newsgroups:	lugnet.technic
Date:	Fri, 11 Jan 2008 03:25:39 GMT
Viewed:	9728 times

Kevin! I am astounded by your recent creations. I intently tried to figure out how you made these inchworms. The gates that you are so well known for are so elegant yet complex. The work you have done is a marvel to see! So you were able to get a 1 switch to 1 piston arrangement? Philo came up with that? Amazing. Drool drool all those clear Cylinders! I was wondering, would you consider locking the axle at the bottom of the cylinder base with a 3L technic plate and then add those technic tear drop parts to act as feet or toes. I really think those parts need to be affixed to the bottoms of the cylinders. Could you give that a try and let us know how it works out? They would be better than the cylinder base acting as a 'foot'. Just a thought. Again great work!

Subject:	Re: Inchworm 4
Newsgroups:	lugnet.technic
Date:	Fri, 11 Jan 2008 15:45:58 GMT
Viewed:	9565 times

In lugnet.technic, Kevin L. Clague wrote:

I was playing with pneumatic piston and switch linkages trying to improve on the

Hi Kevin,

Thanks for posting these amazing projects! I have been stuck at home recovering from a severed Achilles tendon and was looking for something new to build. It is always fun building your pneumatic creations.

bob

Subject:	Re: Inchworm 4
Newsgroups:	lugnet.technic
Date:	Sun, 13 Jan 2008 00:06:12 GMT
Viewed:	10055 times

In lugnet.technic, Eric Sophie wrote: > Kevin! I am astounded by your recent creations. I intently tried to figure out > how you made these inchworms. > > The gates that you are so well known for are so elegant yet complex. > > The work you have done is a marvel to see! So you were able to get a 1 switch to > 1 piston arrangement? Philo came up with that? Amazing. > > Drool drool all those clear Cylinders! > > I was wondering, would you consider locking the axle at the bottom of the > cylinder base with a 3L technic plate and then add those technic tear drop parts > to act as feet or toes. I really think those parts need to be affixed to the > bottoms of the cylinders. > > Could you give that a try and let us know how it works out? They would be better > than the cylinder base acting as a 'foot'. > > Just a thought. > > Again great work! Hi Eric, Thanks for the feedback. I'll see what I can do and let you know. Kevin