(04-04-2021, 09:49 PM)jwilliamson Wrote:(04-04-2021, 09:22 PM)tomh009 Wrote: But that's forty-SIX seconds to decelerate and accelerate!
More seriously, what's the acceleration/deceleration time for the current GO rolling stock? How much time would we save with all new rolling stock?
I ran some number with our existing rolling stock (50 tonne bi-level coaches and a 130 tonne, 2700 kW locomotive). It looks like a 10 coach train should be able to accelerate to 160 km/h in about 100 seconds, and decelerate in 80. A 6 coach train only needs 70 seconds to accelerate and 60 to decelerate.
The usual range of average acceleration is 0.1m/2² 0.3m/s², with commuter trains tending towards the lower because of more people standing, and HSR trains at the higher end because most people are seated.
The accelerations you're describing here are significantly higher than you see on commuter or HSR trains, at 0.45m/s² .
In North America, Class 5 rail is ~153km/h and takes about ~425 seconds at an average of 0.1m/2², or ~140 seconds at 0,3m/s².
Class 6, ~177km/h would be 490-455 seconds, or 160-165 seconds.