Well... it is not a secret nor the first time, I confess that 'Excavators' are my favorite subject to see built with LEGO TECHNIC.
Take a look at some, photographed from LEGO events as detailed below and some other sources I've been finding along the time:
LIEBHERR A 314 Litronic Mobile Excavator, model at '75 years of LEGO' event in Billund, 2007.Aug.9-11
See more, starting here and here (Jørgen Vig Knudstorp, TLG CEO, playing with).
Full external pneumatic control.
Found later, this to be a creation from Beat Felber, who runs the Engineering with ABS website.
Find many more and a video about this model here, or the author's announcement at LUGNET.
This model wasfirst built, back in 2005 to exhibit at the Suisse Toy Fair.
VOLVO excavator model on top of a "Volvo FH16 - Goldhofer trailer combination", at the '75 years of LEGO' event in Billund, 2007.Aug.9-11
See more images, starting here.
Later I've also found this is a model from Anders Gaasedal, a well known Danish TECHNIC and Model Team builder.
You may find some magnificent models at his website "LEGO Trucks and Cranes", however not this Excavator which was left as an ongoing project in Jun.2005 and never fully documented.
A comment left at this post by a French builder, raised the question about origin of this excavator pneumatic cylinders. I'm not sure whether they are functional or not, however I believe they are. Likely custom made and not a LEGO prototype as I've first suggested to be one possibility in the comments section too.
I have meanwhile contacted Anders, asking for more information (a video would be really nice...) about this model and its pneumatics.
Have meanwhile just realized , that Anders turned LEGO Designer in between [btw a TECHNIC designer (Goose Valley)], so it makes very unlikely to get an answer with further details about the cylinders. But on the other way it would make our chances to get a decent official TECHNIC Excavator with longer pneumatics in the future, somehow higher...
I got an answer , so here I leave some quick-specs about this model functions, and the confirmation that this is a full functional model.
LIEBHERR R964 model, from Fabio Sali, at LEGOWorld 2007
See more about this model from here.
Electric control with Power Function motors.
Initial model was upgraded with PF motors and newest treads.
Most photos taken before adaptation to PF motors, but also a few after!
And off-course these other ones below, already shown here at TBs , sometime ago.
JCB JS220 model by Jennifer Clark, completed in 2003.
Model details here.
Full external pneumatic control with external compressor.
And another LIEBHERR model (R996) from Thomas J. Avery, shown at his TEXBRICK website.
Model details here. This model was finished and exhibited the first time in 2002 at BrickFest (Oregon, US).
Full external pneumatic control with compressor placed internally to the model.
LIEBHERR R974B (Top) and LIEBHERR A904B (Bottom), are another example of great excavators made with LEGO TECHNIC for the time.
These were built by Dennis Bosman (another well known Dutch TECHNIC and Model Team builder) and completed respectively in 2000 and 2003.
My main note about these models, would go to highlight that pneumatic cylinders are dumies made of non-LEGO plastic and aluminum pipes. Thus the way Dennis imagined to lift both excavators' boom and operate digger arms or bucket (in one model), was using ropes coiled into a motorized reel or fishing rod.
If you take a close look into these models images on the right side, you will be able to find the mentioned ropes.
You may also find full details about this models, at Dennis "LEGO Trucks & Heavy Equipment" website. Namely here and here respectively.
|A video from the latest A904B model in operation, can also be seen from YouTube.|
CASE CX800, an 80t excavator made of LEGO by a French builder (pithivier57) in 2009.
Main characteristic of this excavator, are its 4 custom made extra long pneumatic cylinders.
You may find some other photos from this model at the author's BS folder and also several demonstration videos can be seen at YouTube, from which this is an example.
If you know any other good example, please feel free to tell me, or to add it into the comments.
As this is still of of my favorite posts here at TBs , I decided to make it a kind of 'Hall of Fame' for some best TECHNIC Builders excavators or even excavators that somehow stand. Thus started to add some I found meanwhile, immediately below Thomas' model (the LIEBHERR R996), as "Later Additions".
Also added some information meanwhile found, about Gaasedal's VOLVO model.
Last Bottom Update: 2009.Aug.29 17:24 GMT