42009 Mod - new gear boxes




Additional to my new gear box for the superstructure of the 42009 Mobile Crane MK II I modified the undercarriage in that way that the complete model has now the following functions:

  • lifting/lowering the boom (L-motor #1)
  • extending/retracting the boom (L-motor #1)
  • rotating the winch (L-motor #1)
  • extending/retracting the outtriggers (L-motor #2)
  • lowering the outtriggers (L-motor #2)
  • rotating the upperstructur 360+ degrees ((L-motor #2)

Each function can be controlled independently and simultaneously. Furthermore, the direction of each movement can be changed without switching the battery box.

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 boxes
Designer Mowlwurf
Designed 2019
Inventory 2732 parts
Theme Technic > Model > Construction
Modification of 42009-1 Mobile Crane MK II
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