TheHammer Posted May 18, 2012 Posted May 18, 2012 (edited) I started this project not as a crane but as a 6 wheeler truck, little did i know a year and half later it would turn out to be something like this. Like i said i started this out as a 6 wheeler project, which i did end up starting to build a chassis with 12wheels and wishbone suspension, but found what i built just wasn't strong enough to move the crane and so it ended on the scrap heap. Currently the new truck chassis is still in the design phase. FYI: There is still a long way to go on this project... Note when i say 12 wheels i mean 12 of the 98.6 large wheels you find in the old Jeep sets, this thing was pretty big....What was i thinking.... AFter i finished about 70% of the 12 wheel chassis i got to thinking i should make a crane arm to sit on top of this thing. I started thinking what was the best way to make a crane arm that looks nice, i did some research on the net and found some great examples but they were not quite what i was looking for. I then started to look at plates and how they can be used and low and behold what i found was when you connected four 1/4 plates together you got a nice round solid structure. The project then took off when i started to experiment with 1/4 round plate, flat plates, and 12 hole beams, eventually i found a combination that create these nice large strong crane arms below is a view of what i ended up creating. Now that i had the idea of how to build the arms i then ran into the issue, how support this giant monstrosity of an arm, this thing weighs like 12 pounds. This is where the real engineering of this project kicked in because not only does this have to support the weight it also have to be able to lift it from a horizontal position to a almost vertical position. This is easier said then done. The first challenge was to develop a lifting arm that could lift this 12 pound monstrosity, the first design i created ended up being so strong it could actually start lifting a person, but i ended scraping the design because it looked terrible and was just too big to fit in the scheme of things. My second design i scaled so that it has just enough power with two of them to lift the main arm. Now that i had a lifting arm i need something to tie the hydraulics and the main arm together, but i realized soon enough the structure i had built in regular lego kits was just not going to cut it, I then started to think, "what is the strongest building structures out there", what to came to mind is bridges and what do bridges use to create strong structures? " i- beams " Thats right folks "i - beams " my entire base structure is designed like a giant i-beam. where i have taken 4-6 plates and old style beams and layered them into this extremely strong structure. So Some Specs: (Not actual measurements but pretty close) Crane arm base (1 foot, 6 inches) Hydraulic lifts(2 feet) -- not really Hydraulic ;) Largest Crane arm ( 4 feet 6 in ) Middle Crane arm ( 4 feet 6 in ) Smallest Crane arm ( 4 feet 6 in) Well here are some images below of the project, like i said in the tittle its a work in progress, more to come soon i hope. Just need to find some more lego time. :) Enjoy Crane arm base Hydraulic Gears Base main arm mount Base and main arm connected with only the first arm showing. Edited May 18, 2012 by TheHammer Quote
DarkShadow73 Posted May 18, 2012 Posted May 18, 2012 (edited) Can't see the pics, at least on my PC its all in code, and its a brand new high-quality PC... Edited May 18, 2012 by TechnicFreak Quote
Omikron Posted May 18, 2012 Posted May 18, 2012 (edited) simple tags could be better Edited May 18, 2012 by Omikron Quote
timslegos Posted May 18, 2012 Posted May 18, 2012 . that is HUGE. You are definitely putting Lego to the limits! Looking forward to more progress. tim Quote
Saberwing40k Posted May 18, 2012 Posted May 18, 2012 I've tried to build a crane of similar size to this, but it ultimately proved to be to big for the chassis to handle. good luck on this, and please improve your spelling, grammar, and punctuation, and add bigger pictures. doing that would allow us fellow builders to get a better view of what you're trying to accomplish. Quote
TheHammer Posted May 18, 2012 Author Posted May 18, 2012 I've tried to build a crane of similar size to this, but it ultimately proved to be to big for the chassis to handle. good luck on this, and please improve your spelling, grammar, and punctuation, and add bigger pictures. doing that would allow us fellow builders to get a better view of what you're trying to accomplish. Each small picture is a link to a bigger one, don't know if i can help with the grammar or punctuation :) -E Quote
nielsvdv Posted May 19, 2012 Posted May 19, 2012 very nice moc maybe you can use this, it started as a 12X12 crane, but i made it into a trucktrial vehicle :D the opposite... it has pulled 25 kilo, so more than enough power http://www.brickshelf.com/cgi-bin/gallery.cgi?f=496273 Quote
TheHammer Posted May 20, 2012 Author Posted May 20, 2012 very nice moc maybe you can use this, it started as a 12X12 crane, but i made it into a trucktrial vehicle :D the opposite... it has pulled 25 kilo, so more than enough power http://www.brickshelf.com/cgi-bin/gallery.cgi?f=496273 Great Tatra, i may use a few ideas from it. Thanks -E Quote
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