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Excavator Sets
Excavator Comparisons

Excavators

excavators

The excavators produced by LEGO Technic vary widely in size and in the way that their functionality is achieved.  Two use pneumatics for the bucket and boom motion, while others (especially the smallest) are purely mechanical.  The most recent use linear actuators instead of pneumatics which require many of rotations of an input crank.  The flagship hydraulic excavator, 8043, is one of the most complex Technic sets ever with 4 motors and 6 motorized functions including propulsion.  Interestingly, the historic models tend to be medium in size while the newest models are either much larger or much smaller.  A case in point is the 42055 bucket wheel excavator, the largest Technic model ever made by a wide margin.  It looks nothing like the other models, and fits in the same category only by the fact that its function is to remove earth.

My favorite is the first, 8851.  While not as complex as 8043 or as huge as 42055, I just love the way the pneumatics mimic the function of the real thing.


 

Sets

8043 Motorized Excavator
8043
8047 Compact Excavator
8047
8294 Excavator
8294
8419 Excavator
8419 
 8837 Pneumatic Excavator
8837
8851 Excavator
8851
42006 Excavator
42006
42023 Construction Crew
42023 Excavator
42053 Volvo EW160E
42053
42055 Bucket Wheel Excavator
42055
 

Feature Comparison

Set
Boom Dipper
Bucket
Slewing
Locomotion
8043
Luff via motorized linear actuators
Motorized via linear actuator Motorized via linear actuator
Motorized on turntable
Motorized skid steer
8047
Luff via worm gear system Dipper and bucket move together via gear system Manual on turntable Older small tracks
8294
Luff via gear driven linear actuator
Dipper and bucket move together via linear actuator
Manual on turntable
Newer large tracks
8419
Luff via worm gear system Dipper and bucket move together via gear system
Manual on turntable
Single piece rubber tracks
8837
Pneumatic luffing Fixed
Pneumatic pivoting Gear driven on turntable
Wheels with rack and pinion steering
8851
Pneumatic luffing
Pneumatic
Pneumatic pivoting Manual on turntable Older small tracks
42006
Luff via gear driven linear actuator Linear Actuator
Claw via small linear actuator
Manual on turntable Newer large tracks
42023
Luff via gear driven small linear actuator Dipper and bucket move together via gear system Gear driven on turntable Older small tracks
42053
Pneumatic luffing Pneumatic
Pneumatic clamshell
Manual on turntable
Wheels with rack and pinion steering
42055
Pivot via linear actuators
None
Motorized 8 bucket wheel
Motorized on slew ring
Motorized


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