cheeze Posted February 16, 2014 Posted February 16, 2014 (edited) Ok folk, been working on this for a while now, please excuse the rubbish pics but im sure you get the ideaIve still to get a few power function parts for the base but the upper section is all working and had a lift of 2kg so far but with plans of trying for a bit moreOne thing im strugging with is, the two main winches in the body are run off the same motor and have to wind/unwind at the same speed but im strugging to get the string to wind nicely on the spool, anyone any ideas?Ok this is a 1:50th model of the real machine im working from Edited August 20, 2014 by cheeze Quote
branolego Posted February 16, 2014 Posted February 16, 2014 concerning your question about how to get your string to spool up nicely, the cranes i work around have a rod pressing down over the spooled cable so it has no choice but to roll up nice. not sure if that helps or makes any sense. nice crane though. Quote
Rishab N Posted February 17, 2014 Posted February 17, 2014 Thats really amazing! How tall is it? Quote
cheeze Posted February 17, 2014 Author Posted February 17, 2014 Cheers for the comments, Rishab, its around 1.5 meters so far ground to boom tip, but im planning on going bigger yet still, but the 5L thin liftarms are a rather pricey part. Quote
cheeze Posted May 24, 2014 Author Posted May 24, 2014 Ok an update to this topic, progress is slow but im at a stage i can display the model enough so here are the most recent images from today, the last image is 1.5kg hanging at 1m radius, hooks been tested to 6kg before it failed Quote
Alasdair Ryan Posted May 25, 2014 Posted May 25, 2014 (edited) Very nice crane. Edit: It is now in The Hall Of Fame. Edited August 6, 2014 by Alasdair Ryan Quote
cheeze Posted May 25, 2014 Author Posted May 25, 2014 Cheers guys, next step is a luffer for it Quote
cheeze Posted August 6, 2014 Author Posted August 6, 2014 Cheers Alasdair, Hopefully get more updates once im back from holiday Quote
Edwin Korstanje Posted August 6, 2014 Posted August 6, 2014 Congrats Cheese with your amazing superb Liebherr crane in the HALL OF FAME. :thumbup: Quote
Alasdair Ryan Posted August 6, 2014 Posted August 6, 2014 (edited) Your welcome. Edited August 6, 2014 by Alasdair Ryan Quote
cheeze Posted January 18, 2015 Author Posted January 18, 2015 (edited) Another small update on this crane, im currently building a luffing jib and have changed to a floating ballast tray so on with some pics The luffing arms so far 5 section main boom floating tray 4kg of ballast And fully equipt Edited January 18, 2015 by cheeze Quote
kisper Posted January 18, 2015 Posted January 18, 2015 Nice build. I am always curious about how the strings attached to lift the boom. Would like some advice on that. Quote
cheeze Posted September 9, 2015 Author Posted September 9, 2015 Bit of an update Im slowly getting to the stage of being happy with this, ive now got the lower section controlled via an s-brick for left and right track and also 2 m-motors for slewing 360. ive done a weight test since the last update and managed 6kg with a short boom setup and 1.5kg with full boom and a section of luffing jib So heres a few photos and a small video of crawling and slewing from an sbrick controller 1.5kg at about 1meter radius 6kg lift at closest radius possible S-brick controlling tracks and 2x M-motors for slewing 360 Quote
syclone Posted September 10, 2015 Posted September 10, 2015 Amazing work there! Never though that a Lego crane will be able to lift 6kg!!! Quote
cheeze Posted February 21, 2016 Author Posted February 21, 2016 After seeing the other post re the crawler crane i had though i would update mine also. Heres a minifig for scale on the main body these are all the parts required for the building, i tried to make it as modular as possible for moving around So the build begins with the rear mast being lifted Now the boom foot is fitted And the boom tip to rear mast And now the full boom and Luffing arms are ready to lift, from boom tip to ballast is about 3 meters Slow progress But we eventually get there with it I was never really happy with the floating ballast tray as at certain points you had to balance it just right with different weights which became troublesome and i had a few tip overs i decided to give a ballast car another go Heres the floating tray Looks fine and simple but the problem comes when you want to slew around, youd have to lower the boom enough so the tray would start to float, Go to far and that was it wanting to tip. So this was the solution, both sets of wheels are powered so i can slew with the full amount of weight on it, this is powered by old 9v at the moment where as the main crane is via 2 sbricks, i may try get some PF hooked up and try that way And a quick video of it running Quote
2LegoOrNot2Lego... Posted February 24, 2016 Posted February 24, 2016 Large and strong, well done!!! Quote
dikkie klijn Posted February 24, 2016 Posted February 24, 2016 That looks great! Thinking of making a crawler crane myself now..... Quote
AFOLegofan66 Posted February 25, 2016 Posted February 25, 2016 wow nice crane...looks like a lot of time went into this...nice!! Quote
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