Week TechVideo, 2008 #08 - Kenworth W900L with PF RC and ...

This week I bring a mix between LEGO TECHNIC and Model Team, just to be different... ;)
It is a model from a Kenworth W900L truck, controlled by Power Functions.

Realize on some interesting solutions, like:

• Very compact and large steering reduction (using a worm gear) to make it easily remote controlled when motorized (via Power Functions RC).
  
  
  
  
• Rear drive train, with 4 driven wheels and unsprung pendular suspension.
  However this design lacks an independent oscillation solution for each truck side, like we can see from Jennifer Clark's Demag AC50-1 simplified diagram, on the image at right (examples 3 and 4).
  That's correct that Jennifer illustrated solution doesn't represent an all-wheel drive mechanism (as on figure below left), however it could be achieved by using a differential which separates each side driving mechanism. Then a similar geared construction at each side, could be used to drive all the individual wheels.
  

• The RC adaptation is also a very nice construction detail (however this is a subject for a coming post with a lot more and different implementations, for similar concepts).
  

For static observation of these details, take a look at the respective Brickshelf folder.


Edit:
Meanwhile Marek Markiewicz from LUGPol, shown me also his 6-wide PF MiniTruck, which I decided to add here in this post because of subject similarity and time coincidence.
This example also got a PF controlled front steering, and all PF elements are hidden inside the trailer. Look into Marek's Brickshelf folder, for further model images.

Last Update: 2008.Feb.23 14:25 GMT