LEGO TECHNIC : 10962


Technic / 10962	10961 \| 10963

Subject:	CAT320B
Newsgroups:	lugnet.technic, lugnet.modelteam, lugnet.robotics
Date:	Tue, 15 Jul 2003 07:21:11 GMT
Highlighted:	!! (details)
Viewed:	7267 times

But...what is this ?? http://www.brickshelf.com/cgi-bin/gallery.cgi?i=455804 Doing to enlarge image.... http://www.brickshelf.com/cgi-bin/gallery.cgi?i=455803 This is my last model: CAT 320 B http://www.brickshelf.com/cgi-bin/gallery.cgi?f=49867 This machine, equiped by RCX, as usual on my model (but external this time !), has three motors to control valves, tower and trucked traction, two touch sensors to control boom valves and one touch to control tower The valves are controlled by a single motor. Control system is based on a synchronized mechanical gearing http://www.brickshelf.com/cgi-bin/gallery.cgi?i=455810 http://www.brickshelf.com/cgi-bin/gallery.cgi?i=455799 http://www.brickshelf.com/cgi-bin/gallery.cgi?i=455801 A touch sensor positioned under the tower, allows to control rotation each 90° http://www.brickshelf.com/cgi-bin/gallery.cgi?i=455800 Traction is equiped by an adder-subtractr systems. I’m afraid but with one single motor it’s possible to control fwd-rev motion or left-right motion only, but…. simply moving from left to right a double bevel gear it’s possible to change configuration http://www.brickshelf.com/cgi-bin/gallery.cgi?i=455806 http://www.brickshelf.com/cgi-bin/gallery.cgi?i=455809 http://www.brickshelf.com/cgi-bin/gallery.cgi?i=455811 Actually the excavator is programmed to a stand-by action including a large use of traction (only fwd-rev) and various actions of boom. When the blue truck arrived, CAT start an active action loading the truck. After 2-3 loops CAT re-start a stand-by action and blue-truck going to download. All this actions are based on rcx messaging of course http://www.brickshelf.com/cgi-bin/gallery.cgi?i=455802 Air for pneumatic circuit is provided by my usual Atlas unit http://www.brickshelf.com/cgi-bin/gallery.cgi?f=49870 More images on brickshelf Thanks Andrea

Message has 2 Replies:

		Re: CAT320B
(...) -TJ (21 years ago, 16-Jul-03, to lugnet.technic)

		Re: CAT320B
(...) YEEEEEEEEOWWWW! My jaw is still on on the floor from seeing your model! I have never seen a lego model that is so close to the real thing! I bet Caterpillar would love to see that model! Chris Pritchard (21 years ago, 24-Jul-03, to lugnet.technic, lugnet.modelteam, lugnet.robotics)

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