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Crane Truck
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About this creation
This is my new Moc. I started building this crane truck about 6 months ago with the main idea of solving the problems related to a failed attempt of a crane for my previous truck.

Starting from the cab...despite the undeniable resemblance to the cab of the dump truck (with a bit of the tractor truck), it has slightly different dimensions, and the add of some new details/functions, forced me to revise it completely. In fact, in addition to the "standard" opening doors, this time, as on real trucks, the cab is suspended, while maintaining the tilting function and the working steering wheel and the front grid is openable. Moreover the seats are pneumatically suspended via 2 (1+1) 1x5 pneumatic cylinders.

The chassis has the tractions on the 2 last axles, they are driven by 4 XL Motors and uses 2 Servo Motors to steering the first two axles (with different turning radius). The first two axles use independent suspensions. In this case I was inspired by the Mod of the chassis of my Tractor Truck done by Efferman ... that has a perfect shape for a fake v8. On the back there are 2 live axles (with a total of 24 hard shock absorbers). Between the first two axles there are two small pneumatic pumps moved by two L Motors. In addition to that, on the chassis are present 2 Li-Po Battery, 5 Leds for lights and 2 SBricks.

Behind the cabin there is the base of the crane, it contains the front stabilizers, extendable via a M motor (connected to one SBrick), 6 pneumatic valves, moved by an M motor each, 4 IR receivers to control the 6 valves motors plus 2 other M motors, one to rotate the crane and one for the winch. The 4 receivers take power from a port of an SBrick.

Finally the crane ... well, the classic design of this type of crane with the upper arm offset (as on 8258 for instance) built on this scale, gave me big problems twisting the whole structure ... and a lot of headaches. One day I came across by chance in a truck with a Cormach crane, it presented a unique design that would solve the twist problem. So inspiring to this design, I have developed my crane, which consists of a telescopic upper arm (extension via 2x 1x11 pneumatic cylinders) supported by two side arms moved by 2+1 2x11 pneumatic cylinder each. It isn't able to lift heavy loads, but it works and, considering the masses involved, I'm fine with that.

Now some numbers:

Length: 86,4cm 108studs
Width: 24,8cm 31studs, 28cm 35studs with mirrors
Height: 39,2cm 49studs
Weight: 8.6 kg
Total number of parts: 8000

PF elements:
M motor: 9
L Motor: 2
XL Motor: 4
Servo Motor: 2
PF LED: 5
Lipo Battery: 2
..and a couple of wire extensions

Pneumatic Elements:

Small pumps: 2
1x5 Cylinder: 2
Medium Cylinder old: 4
Medium Cylinder new: 2
1x11 Cylinder: 2
2x11 Cylinder: 6
Valve: 6
..and several meters of pipes.

Crane Truck Video on Youtube

Crane Truck on Flickr




















Comments

 I made it 
  April 7, 2017
Quoting Thomas Bigum It dosen't get any better than this. Hopefully you will make instructions for this awesome model. Do you have a partlist, so we can start colleting the parts?
Thanks! Yes, I'm doing the instructions, sorry, but I prefer to release the PL only when I will be sure about his correctness...and I'm still in the middle of the process!:-)
 I like it 
  April 4, 2017
It dosen't get any better than this. Hopefully you will make instructions for this awesome model. Do you have a partlist, so we can start colleting the parts?
 I like it 
  March 12, 2017
Dang, the colors look great. Love the black design on the front.
 I like it 
  March 9, 2017
Wow, that's boombastic, the mother of all crane trucks. Great job! :-))
 I like it 
  March 8, 2017
Hope you enjoy your new job at TLG!!
 I like it 
  March 8, 2017
This is no longer a toy, this is a working man's truck!
 I like it 
  March 8, 2017
A true tour de force, Lucio! Expertly engineered and styled.
 I made it 
  March 8, 2017
Thank you all guys for the nice comments!
 I like it 
  March 7, 2017
A total beast!
 I like it 
  March 6, 2017
Breath takings! Great job!
 I like it 
  March 6, 2017
Dude, this is INSANE!!! At first, I thought you'd just hacked off the set, but seeing the Ecto-1 next to it told me I was wrong! Well done!
 I like it 
  March 6, 2017
Amazing truck! Everything works perfectly and smoothly. Making the crane able of lifting heavier loads would bring unnecessary problems. Top work! 5/5
 I like it 
  March 6, 2017
As seen and commented on EB, this is a fantastic truck Lucio. Others have commented on perhaps the ungainliness of some of the functions; but... having also built very large creations I know first hand the problems with building in Lego and weight issues; most noticeably in backlash with Technic axles. IMO, given this knowledge, the functions work great. About as good as can be expected from Lego for such a large build.
 
By Lucio Switch
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LEGO models my own creation MOCpages toys shop Crane Truck


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