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  Re: Crane Steering
 
(...) SPMT's (self propelled modular trailers) try (URL) click on transport SRL (20 years ago, 2-Mar-05, to lugnet.technic)
 
  Re: Crane Steering
 
(...) Their steering is hydraulic and computer controlled (as is their suspension), each axle can be turned individually. This allows them to be tethered together in many configuration, end-to-end or side-by-side, or combinations, and all controlled (...) (20 years ago, 2-Mar-05, to lugnet.technic)
 
  Re: Crane Steering
 
(...) If you think about it a normal bog standard trailer has 4 wheels one at each corner, like a table has legs. This is a very stable configuration. If you built a six line modular trailer from lego (12 stub axles, 24 tyres, 12 cylinders) you (...) (20 years ago, 3-Mar-05, to lugnet.technic)
 
  Re: Crane Steering
 
You are forgetting one thing: The system for the suspension are a locked system, where the amount of oil are the same and dont increase or decrease if you change the the height on uneven ground: (URL) airsuspensions, the only thing that controls the (...) (20 years ago, 3-Mar-05, to lugnet.technic)
 
  Re: Crane Steering
 
(...) Jan-tore, my mention of computers was in direct response to the mention of the self-propelled transporters. I also would not be surprised if many modern multi-axle mobile cranes use a similar system, but I have no information on that. ROSCO (20 years ago, 3-Mar-05, to lugnet.technic)
 
  Re: Crane Steering
 
(...) I have had a demonstration of the 6 wheel steering on a Demag AC50-1, and while I did not see the workings in detail, it would appear that each axle could be controlled independently, switching between modes electronically. To my mind this (...) (20 years ago, 4-Mar-05, to lugnet.technic)

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