MOCpages : Share your LEGO® creations
LEGO models my own creation MOCpages toys shop Motorized Technic ForwarderTechnic
Welcome to the world's greatest LEGO fan community!
Explore cool creations, share your own, and have lots of fun together.  ~  It's all free!
Motorized Technic Forwarder
Motorized Lego Technic Forwarder.
About this creation

IMG_4967-edit

Objectives

  • Authentic proportions
  • Mechanical crane (not pneumatic)
  • 100 % remote controlled
  • Joystick controlled
  • Strong enough to actully load and carry small logs in the forest

Video of the model loading logs in the forest

Functionality

  • Forward / reverse with 8WD
  • Articulated steering
  • Rotating hitch – Independent tractor and trailer
  • Locking mechanism for rotating hitch
  • Working bogie axes
  • Boom Slew
  • Boom up/down
  • Jib up/down
  • Grapple open/close
  • Grapple rotate
  • Fake 4 cylinder engine

Datasheet

  • Propulsion: 2x PF XL motor connected to a common drive train
  • Steering: Frame steering by two small linear actuators powered by a PF M motor
  • Hitch lock mechanism: Micro motor
    Boom
    • Slew: Large turntable turned by PF M moto
    • Up/down: LA powered by PF M moto
    • Jib up/down: LA powered by PF M motor
  • Grapple
    • Open/close: Wormgear driven by PF M motor
    • Rotate: Micro motor

 

  • IMG_6311
  •  

    IMG_0978

    The M motor and the actuators that turns the frame.

     

    IMG_0979

    In the compact housing underneath the boom-slew there are two M-motors and two linear actuators and all the gears needed for steering and turning the boom fitted. The drive train is also passing straight through this module.

     

    IMG_0980

    No less than nine wires are passing throught the centre of the machine along with the drivetrain. There is actually a total of over 5 meters of wire inside the chassis. The wiring was one of the biggest problems with this project.

     

    IMG_0985

    Here is the locking mechanism for the rotating hitch that will lock the tractor and the trailer in purpose of making the crane more stable when loading. How it works in more detail can be seen at http://www.jh-create.com/2012/06/simple-axle-lock-mechanism.html.

     

     IMG_0988

    A small module used to provide more stability for the front and also fixating the crankshaft and holding a wire connection.

     IMG_0989

    The grille and two of the four IR receivers.

     

    IMG_0993

    IMG_0994

    The “patch panel” for powering the four IR receivers.

     

    IMG_4990

    The bogie, inspired by DHC6twinotter, became alot more complex that I could ever expected. Factors such as weight, wheel size and not least, articulated steering, put a lot of force on the bogie so it needed to be very stable, but at the same time not to wide in relation to the 14,5 scale. But I am very happy with the final design, although each bogie contains more than a 100 pieces.

     

    IMG_5007

    The grapple. It was important for it to be quite strong in order to actually be able to pick up small, but real, logs from the terrain. The grapple is powered by a PF M motor placed in the crane base. By five U-joints the drive train reaches the grapple, without limiting the crane’s movement range and angles. The grapple is rotated by a micro motor turning the turntable. The grapple is attached to the crane in the same way as a real crane making it able to swing in two dimensions.

     

    IMG_5035

    IMG_5050

    The remote control. Joystick design by jjrailton http://www.brickshelf.com/cgi-bin/gallery.cgi?f=301922. The joysticks works exactly as in a real forwarder, greatly improving the maneuverability.

     

    IMG_6308

    The drivers’ seat can be turned 360 degrees, the backrest leaning angle can be adjusted as well as the armrests.

    Video of the model loading logs in the forest




    Comments

     I made it 
      September 25, 2012
    Quoting Wesley Kreiss Technic has changed so much as to I could never build something of this magnitude - such an awesome build (5+/5). You have met (and in some ways exceeded) your objectives! Everything looks organized and truly functional! Great MOC!
    I agree, the new Technic features has really pushed the limit for what can be done (not least thanks to the linear actuators). For me it's the perfect hobby :-) Thank you very much for your comment!
     I made it 
      September 25, 2012
    Quoting David Roberts I see machines like this a lot in the forests where I mountain bike and think that you've captured the shape & feel of these machines extremely well. The various power functions, plus the efforts that you've put into including them, are incredible. A very impressive build.
    I am very glad to hear that! Thank you for your comment!
     I made it 
      September 25, 2012
    Quoting Henry Quarmby Nice work :P
    Thanks!
     I like it 
      September 24, 2012
    So many motors! Great functions. Nice work on the grapple.
     I like it 
      September 24, 2012
    Technic has changed so much as to I could never build something of this magnitude - such an awesome build (5+/5). You have met (and in some ways exceeded) your objectives! Everything looks organized and truly functional! Great MOC!
     I like it 
      September 24, 2012
    Excellent work!
     I like it 
      September 24, 2012
    I see machines like this a lot in the forests where I mountain bike and think that you've captured the shape & feel of these machines extremely well. The various power functions, plus the efforts that you've put into including them, are incredible. A very impressive build.
     I like it 
      September 23, 2012
    Nice work :P
     
    By Jonas H
    Add to my favorite builders

    11
    people like this. See who.

    1,662 visitors
    8 comments
    Added September 23, 2012
     


    LEGO models my own creation MOCpages toys shop Motorized Technic ForwarderTechnic


    You Your home page | LEGO creations | Favorite builders
    Activity Activity | Comments | Creations
    Explore Explore | Recent | Groups
    MOCpages is an unofficial, fan-created website. LEGO® and the brick configuration are property of The LEGO Group, which does not sponsor, own, or endorse this site.
    ©2002-2014 Sean Kenney Design Inc | Privacy policy | Terms of use