42009 Mod - new gear box (superstructure only)




Similar to my modification of the 42006 Excavator I reworked the gearbox of the 42009 Mobile Crane MK II.

Now the three functions of the boom (lifting/lowering, extending/retracting and winch) can be controlled simultaneously and independently forwards and backwards without having to switch the battery box.

The drive consists of 2 L-motors, one for the superstructure and one for the functions of the carrier.

My design has two little disadvantages:
First, the winch is slower than the original, but has more power.
On the other hand, I had to extend the housing by one stud, which in my opinion doesn't have a negative effect on the overall impression and the proportions of the crane.

I am looking forward to your opinions and suggestions for improvement of my design.

Update 2019-12-19:
For those having the problem that the motor stops when lifting the boom: jb70 solve this by using only one L-motor for all functions (link). Additionally he made instructions for the complete model :-)
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Name 42009 Mod - new gear box (superstructure only)
Designer Mowlwurf
Designed 2019
Inventory 570 parts
Theme Technic > Model > Construction
Modification of 42009-1 Mobile Crane MK II
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