Week TechVideo, 2012 #50 - Lego Technic tractor JCB 2155 with rake Fella TS 4000

Kees Hogenhout (corne723) has a magnificent JCB 2155 tractor on his MOCpages, with a no less fantastic rake Fella TS 4000.

In real life, heavy tractors are needed to cultivate the land or for haymaking. This LEGO Technic JCB 2155 tractor is fully radio controlled and it has two gears. The motor is positioned back or forwards with a mini cylinder.
With it's four elements rake, the Fella TS 4000 goes attached with the tractor and races through the fields. A rake is used in haymaking to rake the grass on a big swath. Then it can be picked up by the tractor with the silage wagon and be gathered on a big heap of grass, where it is stored for wintertime.

This model uses a good amount of electrical elements,

In the tractor:

• Steering: 2 M-motors
• Switching between high and low gear: 1 M-motor
• Power Take-Off (PTO): 1 XL-motor.
  In this model, the PTO is used to raise the four elements of the rake.
• Driving: 1 XL-motor (only)
• 3 IR-Receivers in the cabin
• 1 Battery box
• 2 PF Lights

In the rake:

• 1 RC motor: used for powering the four elements with high speed!
• 1 Battery box: to feed the power hungry RC motor, turning and raising the four elements.

The tractor features 4WS but also crab steering, for which I found an interesting explanation in the MOCpages description and which I never though of. Crab steering is used to avoid ground pressure damage in muddy fields. The idea behind this is that the wheels don’t drive in the track of the other.

You can find many other nice pictures at Kees' MOCpages and a much longer video with more details about this model, here.

The LDD model for the rake, if you wanna build one, his also here. Wish he will also make available the instructions for the tractor soon.


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