On 10/08/17 09:22, Tony Gallowayarg@... [TramsDownUnder] wrote:
> Transit Research Corporation was wound up in 1959, Dudley.
> I may be wrong, but I thought VAMBAC was developed by Crompton
> Parkinson after WW2, and the issue with the Blackpool cars was
> excessive power consumption not reliability. One of the differences in
> specification from the ERPCC/TRC patents was the use of 45hp, rather
> than 55hp motors. I also believe one of the anti PCC arguments in both
> Melbourne and Sydney was the power consumption issue as well.
Based on specifications, a Sydney Variotram including air-conditioning
has lower peak power draw than a standard PCC car !
Power economy was NOT a PCC feature.