Re: Re: First new tram for Sydney''s $2.1b light rail line finally unwrapped
  Matthew Geier

On 10/08/17 06:57,prescottt@... [TramsDownUnder] wrote:



> Mick, if there's the technology nowadays to electronically mimic a

> continuous axle, why remain stuck in the old ways?

It doesn't work though. There is enough 'slip' in the 3 phase motors
that a virtual axle isn't fully effective.

Alstom have resorted to gearboxes and low level transaxles to link the
wheels on opposite sides together to improve the running characteristics.