Greater Lafayette LEGO Robotics Club : 377


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Subject:	Rock Crawler
Newsgroups:	lugnet.org.us.laflrc
Date:	Fri, 22 Dec 2006 14:16:57 GMT
Viewed:	2330 times

After a visit with Steve & Bryan last weekend, and being completely disasatisfied with my prototype rock crawler, I began a whole new design. My inspiration... Monster trucks. So I built a 4-wheel drive, 4-wheel steer vehicle with 4-link suspensions both front and rear. It is cool if I do say so myself. It's turning radius is about 12". I can independantly steer both front & rear axles. Pictures can be found here... http://www.brickshelf.com/cgi-bin/gallery.cgi?f=222253 Deep links http://www.brickshelf.com/gallery/JBrost/RockCrawl/100_0562.jpg http://www.brickshelf.com/gallery/JBrost/RockCrawl/100_0566.jpg http://www.brickshelf.com/gallery/JBrost/RockCrawl/100_0564.jpg Before I disassemble this, I'm posting it hoping that it might inspire others to build their own rock crawlers. So why am I disassembling it? Well as soon as I powered this up and went forward, this happened... http://www.brickshelf.com/gallery/JBrost/RockCrawl/100_0570.jpg That's right, snapped the u-joints in the driveshafts like they were toothpicks. I really like the 4-link suspension, but it requires the use of u-joints in the driveshafts, so I don't think I'll be able to keep the 4-link. But it looks really cool! John

Message has 1 Reply:

		Re: Rock Crawler
(...) As usual, very cool. I look forward to seeing what you come up with next. This week, I expect to get together with Bryan to work on our Gamma Rex (3xNXT Walking robot), but on Saturday (Dec 30) we're all getting together for Rock Crawling. I (...) (17 years ago, 22-Dec-06, to lugnet.org.us.laflrc)

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