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Quite Big Mobile Crane
Some good old fashioned classic Technic in a System wrapper.
About this creation
A theme I've visited before, this time built with SuperStrength (TM) and some cunning solutions.



Inspired by the crane model that was illustrated in the ideas pages of the early Technic set instructions, I present to you a biggish and very functional 8-wheel mobile crane. It's not modelled on any particular example - this is a generic build that I did my own thing with.



An interior, of sorts. Not really the point of this moc - be glad the doors open.... and you can steer it by the steering wheel or the HOG control on the back of the chassis.



The operator's cab, for the necessarily very thin operator...



Now to what it does. All those racks and chains do mean something.

It has 6 wheel steering, whereby the front pair swivel further than those behind, and the rear pair swivel the opposite way. This allows it to turn in little more than it's own length.



The engine - a V6 - is connected to the third axle.



Underneath, the chassis is a greedy consumer of black beams to give it the strength it needs in use. The four extending stabilisers work all together from a single control and are designed to spread the load across the strongest parts of the chassis, which is usefully stiff.



Legs extended - they could do with being longer but they work as intended, which is just as well...



The boom rotates and extends via handwheel controls. There's also one to raise and lower the hook.



The classic way to make a crane work - I tried linear actuators and one broke under the strain. This way is strong enough, provided the carrier, as here, is built sturdy enough to whack someone over the head with (not that I'd try....)



But we're gonna need more room....



The three piece boom can be augmented by this two piece folding extension carried on the chassis. Should be long enough...



Now the clever bit. A loop of chain runs around the middle of the three boom sections, transmitting the input of the control wheel to the top part. Both upper sections extend at once from a single control.

'Yeah, very nice. Now PUT ME DOWN!!'



And this is how I annoyed that minifig so much...



Still, it could have been worse for him.



With the extension fixed on the extended boom, any minifig would get vertigo. That is nearly 7 feet high! There are many, many 16 long yellow beams here....



And now it isn't. It is very heavy, though. 4 kg, or 9 lbs in old money.



Thanks for watching!




Comments

 I made it 
  August 17, 2014
Quoting clayton Marchetti Congratulations on a well deserved MOTD! This thing is huge. Excellent work! And this makes 100
:-) Thanks Clayton!
 I like it 
  August 17, 2014
Congratulations on a well deserved MOTD! This thing is huge. Excellent work! And this makes 100
 I like it 
  August 1, 2014
Congrats on MotD!
 I like it 
  August 1, 2014
one great build!:D
 I made it 
  August 1, 2014
Quoting DeTomaso Pantera Really massive mobile crane! Love it! Well deserved MOTD, now to make one with all of those UNIMOG wheels you've got ;-)
...and one that size can be stuffed with motors! Five piece telescoping boom.... (drool) :-) Thanks Tom!
 I like it 
  August 1, 2014
Really massive mobile crane! Love it! Well deserved MOTD, now to make one with all of those UNIMOG wheels you've got ;-)
 I made it 
  August 1, 2014
Thankyou very much everybody! Happy day :-)
 I like it 
  August 1, 2014
Congratulation on MOTD, I really Line that TECHNIC and SYSTEM combination, great functionality.
 I like it 
  August 1, 2014
Wow, Nick... you've been MOTD'ed! Congrats, and well-deserved! :)
 I like it 
  August 1, 2014
Fantastic. It's great to see you get MOTD. Your crane looks great and has some excellent functionality.
 I like it 
  August 1, 2014
That is a very, very long crane arm. I wonder how you made it.
 I like it 
  August 1, 2014
motd! well deserved, and congratulations!
 I like it 
  August 1, 2014
Wow!!! Great job!!! Congrats on MOC of the day! You deserve it!
 I like it 
  August 1, 2014
MOTD! And very well deserved too. A great model. 5/5
 I like it 
  August 1, 2014
Congrats on a well deserved MOTD Nick. It's always good to see a technical masterpiece on the homepage, even if I don't understand most of it!
 I like it 
  August 1, 2014
'Quite'...yeah, right.
 I like it 
  August 1, 2014
Congrats on a well-deserved MoTD!!
 I like it 
  August 1, 2014
Wow! An incredible choice! Congrats on MOTD!
 I like it 
  August 1, 2014
I remember THIS one! Congrats on MOTD, Chief!
 I like it 
  August 1, 2014
Great way to start August! Congrats!
 I like it 
  August 1, 2014
Whoa! That's a big crane! That extension is fantastic :) Great work - a deserved MOTD
 I like it 
  August 1, 2014
Congrats on MOTD Nick!
 I like it 
  August 1, 2014
A classic well worth revisiting.
 I like it 
  August 1, 2014
All different kinds of cool! Many congratulations on the MOTD!
 I like it 
  August 1, 2014
Congrats
 I like it 
  August 1, 2014
MOTD!
 I like it 
  August 1, 2014
Quite big, indeed! I really like those old-school Technic handwheel controls. Congratulation on the MotD.
 I like it 
  August 1, 2014
congrats on motd Nick!
 I like it 
  May 30, 2013
Wooooow! Enormous creation!
  January 4, 2013
If I tried that with modern technic parts, Id need about 3 of the linear actuators just to hold that boom up, maybe four. That is a challenge I do not accept for sake of not destroying my wallet in the process however.
  January 4, 2013
If I tried that with modern technic parts, Id need about 3 of the linear actuators just to hold that boom up, maybe four. That is a challenge I do not accept for sake of not destroying my wallet in the process however.
 I like it 
  December 3, 2012
amazing piece of work, very impressive, especially that fig perspective pic!
 I like it 
  October 17, 2012
back for a second look, man this thing is epic!
 I like it 
  September 12, 2012
Sensational! This is a good and proper bit of machinery! Superb functionality, great looks and more teeth than an alligator! I'm a big fan of your construction techniques, particularly things like the cabin roof's method of attachment. Brilliant build! :-)
 I like it 
  September 11, 2012
That thing's huge! It would look great in my office. Good job!
 I like it 
  August 15, 2012
I missed another great creation from you! It do is great! 7ft tall? Xtremely high! Can't wait for your next, hopefully great creation!
 I like it 
  July 28, 2012
wow, This a master piece!! Better be talking about this creation to your grandchildren because I would.
 I like it 
  July 20, 2012
Fantastic creation, great shaping and functions. Looks better than 8421.
 I like it 
  July 12, 2012
When you return to (big) wheels, that's not for nothing... WOW!!! Massively impressive! The lift-arm left me speechless, so did all the details and working functions. You could have been Lego technic designer in the early 80's... Stunning.
 I like it 
  July 11, 2012
This is amazing. Well done on making it so strong and stable, even with the crane fully extended.
 I like it 
  July 11, 2012
Wow, this really is quite big! I love the way you incorporated the angular parts of the design, and the working features are as fantastic as ever. Really great design!
 I like it 
  July 11, 2012
Cool! Quite big but not the biggest i've seen here. I'd argue this one is the strongest and has the longest extension though :-) Great work with the shaping and crane boom lifting mechanism!
 I like it 
  July 11, 2012
Love to see that solid boom lifting mechanism utilising racks and gears - reminds me of my first ever Technic set (and one of my first ever Lego sets!) the bulldozer no.856. Definitely the most powerful way to raise a heavy load as it gives so much scope to add parallel racks and gears to provide more strength, spread the load and reduce risk of breakage. The coordinated three part extending boom is also very clever.
 I like it 
  July 11, 2012
Fantastic...and quite big!
 I like it 
  July 10, 2012
I remember the crane model in the ideas pages! Great to see its return, at least in inspiration, and done so well. Love the use of the chain, and clean lines, and I always love to see the classic Technic. Brilliant.
 I like it 
  July 10, 2012
ravishingly beautiful!
 I like it 
  July 10, 2012
Incredible! All the functions are amazing, especially the extending arm. Excellent work!
 I like it 
  July 10, 2012
Simply Beautiful!!! I looks like its ready for the job!
 I like it 
  July 10, 2012
Hi Nick! This is very cool! My favourite things are the cabins! The control place of the crane has a really good roof and the shape of the driver's place is good, too! Grat work! :)
 I like it 
  July 10, 2012
I like your classic building style,this MOC is fantastic too. Very well done!
 I like it 
  July 10, 2012
Wow, there. It looks fantastic like this in old-school style. There is a lot of effort put here in all these wonderful functions. It's too bad there's no movie that shows it all. Anyways it also looks fantastic especially the front and oh yes, a good choice of wheels.
Nick Barrett
 I like it 
kenneth rattledge
  July 9, 2012
very well thought out crane, loads of features, a little mix of new with loads of old, very nicely done.
Nick Barrett
 I like it 
Chris Melby
  July 9, 2012
Stopped by for a second look, absolutely killer, it's more modern than it lets on, plus the chain drive on the boom is killer!
Nick Barrett
 I like it 
Chris Melby
  July 9, 2012
I think I ran into this at the 1982 world "awesomeness" fair! Very cool Nick, brings back memories, good ones too!
Nick Barrett
 I like it 
White Knight
  July 9, 2012
My oh My, this is somewhat bigger than your little yellow LandRover I was looking at earlier today. Remarkable stuff, you have become a Technic Wizard here Nick, your models are so impressively thought through !>.....well done
 I like it 
  July 9, 2012
Very excellent Nick, The boom extension idea is brilliant! I'd imagine you would have to have a pretty good counter weight to hold that boom up at 7ft. A well build model indeed.
 I like it 
  July 9, 2012
WOW! This is awesome! All those functions are fantastic! Excellent work!
 I like it 
  July 9, 2012
This is what Technic is all about, BEAST! Love the action shot, looks like the crane arm is hitting the ceiling!
 I made it 
  July 9, 2012
Quoting George G. 7 feet high! Goodness! This is amazing Nick, great job. And I am a fan of your red doors :)
Thanks George. Red doors are fab! :-)
 I like it 
  July 9, 2012
Awesome! A gurt big yellow crane! Love it's clean lines, I want to play!!
 I like it 
  July 9, 2012
indeed ... quite big!
 I like it 
  July 9, 2012
Oooooo that's massive! Now all you need is a building for it to build... 5/5 -LB Jr.
 I like it 
  July 9, 2012
Yeah, Nick, that's great classic Technic work combined with a lot of playability and awesome shaping. Great job, you are really the Grandmaster of classic Technic! :-))
 I like it 
  July 9, 2012
A great MOC. It reminds me of the telescopic crane models that were around when I was a kid. This one though, is far better looking and definitely bigger!
 I like it 
  July 9, 2012
Looks Great! Nice work on all the fuctionality and playablity with this. Not only does it work but it looks good doing it!
 I like it 
  July 9, 2012
Bendy crane! =D Great technic workings as usual, especially fitting so much crane into such a small package. The cabin is also rather nice, though small.
 I like it 
  July 9, 2012
7 feet high! Goodness! This is amazing Nick, great job. And I am a fan of your red doors :)
 I like it 
  July 9, 2012
Wow, great crane! I like the classic look of this. And I'm impressed about the functionality packed into this - I didn't think it could be extended so long from the first pictures.
 I like it 
  July 9, 2012
Another great bulding from you. And its mostly with the "old study" parts, i love it. Unbelieveable.
 I made it 
  July 9, 2012
Quoting Patrick Starr I quess you have used all of your yellow beams. :-)
Yep. Every last one. Thanks Patrick.
 I like it 
  July 9, 2012
Superb crane!Details and functions are excellent.I quess you have used all of your yellow beams. :-)
 I made it 
  July 9, 2012
Quoting StoveTop Creator It has a very classic look! Cool turning ratio & amazing vertical range! I had to be very careful with my wording... hee, hee! :)
Gotta be careful with the, ahem, vertical range... Thanks StoveTop :-)
 I made it 
  July 9, 2012
Quoting Tom Simon BYB. Big, yellow, and beautiful. I know there is a mechanical engineer in you. If you cook and administer your restaurant as well, you may qualify as a polymath.
Thanks Tom. I could always use this as a labour intensive way to retrieve pots from the top shelf in the kitchen...
 I like it 
  July 9, 2012
Great job on this, Chief! 7ft tall! Time to get a minifig on a parachute up there!
 I made it 
  July 9, 2012
Quoting Chris Melby I think I ran into this at the 1982 world "awesomeness" fair! Very cool Nick, brings back memories, good ones too!
Haha! Thanks Chris.
 I made it 
  July 9, 2012
Quoting Starscream Soundwave Must have taken a while to put together! :)
Oh yes... Thanks Starscream
 I like it 
  July 9, 2012
Superb functionality. Looks beautiful as well.
 I made it 
  July 9, 2012
Quoting White Knight My oh My, this is somewhat bigger than your little yellow LandRover I was looking at earlier today. Remarkable stuff, you have become a Technic Wizard here Nick, your models are so impressively thought through !>.....well done
Thanks White. Thanks for all your comments on my old stuff - and my new stuff! :-)
 I made it 
  July 9, 2012
Quoting MortalSwordsman . 7ft tall - almost as tall as you ;).
... and Alex is catching up with it :-)
 I like it 
  July 9, 2012
Another brilliant build; great Technic functions, good looks and perfect build quality. 5 stars again : )
 I like it 
  July 9, 2012
It has a very classic look! Cool turning ratio & amazing vertical range! I had to be very careful with my wording... hee, hee! :)
 I like it 
  July 9, 2012
Wow, this is very impressive! Great job!
 I like it 
  July 9, 2012
BYB. Big, yellow, and beautiful. I know there is a mechanical engineer in you. If you cook and administer your restaurant as well, you may qualify as a polymath.
 I like it 
  July 9, 2012
love the classic lego technic beams great build well done .also it looks strong
 I like it 
  July 9, 2012
Simply an incredible feat of engineering! Must have taken a while to put together! :)
 I made it 
  July 9, 2012
Quoting kenneth rattledge very well thought out crane, loads of features, a little mix of new with loads of old, very nicely done.
Lots and lots of old :-) Thanks Kenneth.
 I like it 
  July 9, 2012
Awesome Nick. This proves you are a technic genius. Love the 6 wheel steer and the boom. Very cunning indeed. 7ft tall - almost as tall as you ;).
 I made it 
  July 9, 2012
Quoting Thomas Graafland Cool! I like the fact that it reaches so far, even though the arm bends a lot. 5 smilies!
Thanks Thomas. The bendiness is mostly in the extension piece, which is necessarily lightweight...
 I like it 
  July 9, 2012
Cool! I like the fact that it reaches so far, even though the arm bends a lot. 5 smilies!
 
By Nick Barrett
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LEGO models my own creation MOCpages toys shop Quite Big Mobile CraneLarge scale vehicles


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