Excavator with custom pneumatics

Phitivier is a French AFOL, who also decided to build a remotely controlled LEGO TECHNIC excavator. It is an 80 ton. CASE CX800 machine.

There are some PF motors on-board to move the undercarriage and rotate the cab, while the boom, dipper and bucket are operated by pneumatic cylinders.
On the remote unit there is a PF IR remote, to control the excavator undercarriage motors, and two additional PF M-motors for a compressor that feeds the model pneumatics, via a few umbilical pneumatic tubes.

Main point of interest of this excavator, are their unique and extra long pneumatic cylinders custom made by the author.
It is a characteristic from large size excavator TECHNIC models, to require long cylinders well above those produced by LEGO. While long ago some other builders have solved the problem of not having appropriate LEGO cylinders off-the-shelf, using ropes and dummy cylinders. many others (LEGO inclusive) have used the standard ones in a back-to-back setup to double their operative length. However, achieving this way a functional but quite unrealistic solution.
This is the point where some innovative minds, decide to go for customized solutions. And so Pithivier57 did also 4.

EXCAVATOR CALCULATIONS

excavator will operate at maximum digging or climbing the cliffs to make it work But the minimum operating at the time he walked in the area of flat or even at standstill Meaning: rare construction tools that work for 60 minutes / hour à OPERATINGFACTOR

Sample calculation of fuel consumption Excavator: 

estimates grow up

.Excavator with 160 power fwhp 

.Work for loading trucks with soil 

.Operates at max for 5 seconds to fill bucket 

.Operates normal for Swing & dumping for 15 seconds 

.Operates standard (average) 50 minutes / hour
 

1. Machine factors: 

• Filling the bucket: x 1 = 0250 _5_ 20
• Swing & Dump: _15_ x 0.5 = 0375 20 

Total factor = 0625 

2. Time factor: 
50/60 = 0833
Thus, Factor Operation = 0833 x 0625 = 0520
So cons. BHN fuel = 0520 x 160 x 12:15 = 12:48 liters / hour

3. Lubricant 

Replacement of lubricant 

.For normal device operation à 100-200 hours 

.For operation in dusty areas once every 50 hours à substituted

Excavator Brush Mower - for Forestry

Using the reach of the excavator makes it a powerful companion. Even mini excavators can make short work of that tall roadside bank that has become overgrown. Made to match the hydraulic flow of mini excavators, these brush mowers from Rockhound pack a serious punch. Larger full size trackhoes can harness the power of the larger forestry mulchers that we have available. These mulchers devour underbrush and small trees for cleaning up your over grown property projects.

Safely cut and mulch material quickly with these forestry  that feature a Universal bolt on excavator bucket style mount, and High strength welded steel unitized structure for long lasting durability!

 

 

Excavator Thumb

Excavator Thumb - Fixed and Hydraulic

Go from just a digger to a GRABBER! You are going to find the right thumb configuration for you excavator. There are two different configurations to choose from, the fixed thumb that is cost effective, or the much preferred hydraulic thumb which will allow for better control and larger object moving tasks.

Rigid Thumbs are also available and are equally reliable for picking up objects and at a substantial cost savings versus it's hydraulic moving version.

 

unique excavator

excavator unique

excavator unique

excavator unique

excavator unique