Bletchleyite
Veteran Member
why are 319's so poor accelerating? Old DC motor technology, poor power to weight ratio? Rubbish adhesion? Constraints of old dual voltage electrics?
Are they better/worse than 321's?
Slower than 321s. They just have a very poor power to weight ratio.
The electrically similar 455 were re-tractioned with 3 phase drive and AC motors. Said to be worth it because of reduced brake wear meaning less shed time. maybe that would help the 319's. Would the investment pay for itself in the units lifetime?
Why bother when Class 323s are available, which are only 11m shorter but due to longer vehicles have more useful space per vehicle?