Re: 150 5 6 8
Serious question.
Why are trains all built like a Victorian Dreadnought ?
It starts with big heavy wheels, which then need huge bogies and massive suspension and so bigger engines etc.
Obviously the miles long ore trains here with 6 locomotives need to be a bit 'chunky', but a local commuter train that is basically a bus body is still on a train chassis that was designed by Brunel.