astakos Posted February 17, 2014 Posted February 17, 2014 Has somebody been able to build a mechanically correct crawler ? I mean one with differential drives and motors in the suspended mass... I've seen many crawlers in the net, but with rigid axles, drive motors in strange places.. I've been trying for a while but until now my solutions are all too big and heavy, so everything works right, but it could'nt crawl..! Quote
nicjasno Posted February 17, 2014 Posted February 17, 2014 There is no "correct" way. Whatever works is the way here. When thinking of crawlers i always think of the crazy iceland offroad racing trucks: Quote
unimog123 Posted February 17, 2014 Posted February 17, 2014 Crawlers aren't really mass produced (I think), so every one is different. I wouldn't focus on where the engine is and other technicalities, just do what you need to for a great performing rock crawler. Quote
Zerobricks Posted February 17, 2014 Posted February 17, 2014 Who cares if its mehcanically correct or not as long as it crawls great :) Quote
Technyk32231 Posted February 17, 2014 Posted February 17, 2014 Most if not all rock crawlers have rigid/solid axles. Quote
astakos Posted February 17, 2014 Author Posted February 17, 2014 ok ok ! let's just say that I'm trying to make a crawler with suspended engine and differential locks, but at the moment it weights so much that it dosn't crawl ! I was asking for help ! @Technyk32231 I didn't know ! Quote
MrNumbskull13 Posted February 17, 2014 Posted February 17, 2014 Most crawlers use a 4 link set up, I'd look at rc crawlers to see where they mount batteries and motors. Quote
Junpei Posted February 17, 2014 Posted February 17, 2014 I understand why he wants this- a mechanically correct crawler would be beautiful! 4-link suspension, pneumatic steering (of course as a substitute for nonexistent LEGO hydraulics), no motors on axles, etc. TLH Quote
Black-Build Posted February 17, 2014 Posted February 17, 2014 Have you allready looked here: http://www.brickshelf.com/cgi-bin/gallery.cgi?m=z32drive ? There some awesome crawlers with great performance out there (especially ''Best crawler yet'' has some awfully good performance) Maybe you can find something and make your own changes? Quote
astakos Posted February 18, 2014 Author Posted February 18, 2014 there are many nice solutions, but for me is inconceivable to make a vehicle without diffs..! if you drive curve for 2 seconds on a noslipping surface (and motors are powerful) you'll see axels wrench ! however.. i'll abandon the crawler idea and i'll make an off roader !! Quote
astakos Posted February 18, 2014 Author Posted February 18, 2014 (edited) i've found a very nice model in the forum... remote drive engine, remote steering engine.. http://www.eurobrick...showtopic=66146 Edited February 18, 2014 by astakos Quote
gregorijs3kivi Posted March 14, 2014 Posted March 14, 2014 I make good lego crawlers my best own crawler was super light - 650g with body, it driver VERY WELL but it was slow. Quote
astakos Posted March 14, 2014 Author Posted March 14, 2014 can you link it ? a photo.. a video.. thanks Quote
gregorijs3kivi Posted March 15, 2014 Posted March 15, 2014 No, sorry, it vas old creation, maybe i can make v2 for it Quote
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