LEGO TECHNIC : 9540


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Subject:	MOC: Articulated Boom
Newsgroups:	lugnet.technic
Date:	Mon, 10 Mar 2003 10:21:18 GMT
Viewed:	470 times

hello this is beta version of articulated boom with telescopic arm in general this application is the improvment of my jack02 http://www.brickshelf.com/cgi-bin/gallery.cgi?f=35819 according to jennifer's sugestion i added another joint (second) which is connected (in terms of opening) with the bottom (first) one the third joint is done as in previous version (jack02) but at the top there is another segment (telescopic) the basket is positioned by the small pneumatic piston deep links phases: http://www.brickshelf.com/gallery/pixsrv/jack/ArtiBoom03/artiboom03_04.jpg http://www.brickshelf.com/gallery/pixsrv/jack/ArtiBoom03/artiboom03_06.jpg http://www.brickshelf.com/gallery/pixsrv/jack/ArtiBoom03/artiboom03_09.jpg http://www.brickshelf.com/gallery/pixsrv/jack/ArtiBoom03/artiboom03_10.jpg details http://www.brickshelf.com/gallery/pixsrv/jack/ArtiBoom03/artiboom03_11.jpg http://www.brickshelf.com/gallery/pixsrv/jack/ArtiBoom03/artiboom03_13.jpg http://www.brickshelf.com/gallery/pixsrv/jack/ArtiBoom03/artiboom03_14.jpg views http://www.brickshelf.com/gallery/pixsrv/jack/ArtiBoom03/artiboom03_16.jpg http://www.brickshelf.com/gallery/pixsrv/jack/ArtiBoom03/artiboom03_18.jpg http://www.brickshelf.com/gallery/pixsrv/jack/ArtiBoom03/artiboom03_19.jpg http://www.brickshelf.com/gallery/pixsrv/jack/ArtiBoom03/artiboom03_20.jpg post moderation http://www.brickshelf.com/cgi-bin/gallery.cgi?f=36577 as it's a beta version i can tell known bugs # whole construction is a little bit heavy so the bottom piston isn't opening the arm without a little help # lower part of the bottom section can be set in almost full vertical position however it's not too bad but the upper part can be open just a little bit higher than the horizontal so the summaric height doesn't reach the maximum available height # the middle part (which construction is the same as in jack02) opens too much which causes the tilt of basket is too big # the upper section (telescopic) it's made as small as possible so the balance is not done # and the last one :) is't quite hadr to position the basket because of the pressure in the whole tubbing as you can see it's real beta version :)) (all problems will be solved) but i'm a bit proud of the telescopic part beacause of the size of it some questions follow # how to control the small pistons the pressure in tubbing increases and the air accumulates it causes that the one press of pump can move small piston 3 times up and down what can i do with it? # does anyone have any idea how to do the positioning of basket using levers (not pneumatic)? in terms of telescopic segment (it can be of course daone by micromotor :) sorry for such a long post :))) ps: pictures are filtered to remove some yellow and blue light movies will be uploaded after filtering (in 1..2 days) best regards pixel

Message has 1 Reply:

		Re: MOC: Articulated Boom
<<snipp> (...) I suppose you use switches to control the action and don't pump with an switch/valve open? It takes careful manouvering on the switch to control the small pistons under preassure. Generally it's better to extend the lever on the (...) (21 years ago, 10-Mar-03, to lugnet.technic)

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