I believe modern EMU power restrictions in the third rail areas are permanently set irrespective of length, ie a single 450 or 444 is restricted in exactly the same way as when running in multiple.
Correct unfortunately. The future of the factory is very uncertain.Aren’t they all quite likely to be made redundant imminently, as the factory has little further work? Must be a bittersweet moment.
They're sending another one to long term storage????
Well, what else are they gonna do with them?
Few months (or years)
It's well known that a 701 has to be left to set in a siding somewhere before being used - a bit like a good dessert being left to set in the fridge
It's well known that a 701 has to be left to set in a siding somewhere before being used - a bit like a good dessert being left to set in the fridge
Nah, this Monday is the perfect day for making such claimsFew months (or years)
I half expected the April Fool to be the appearance of faux booked paths bringing 'em out of Marchwood!
Yeah they are . But are still power capped funnily enough.
Some spotters seem to swear by GPS recordings for their ”0-60 times”!
The 0-60 times tend to be near accurate when repeated if usjng a GPS . There are many ways to verify that it works often times. If i use a GPS (modern ones are pretty smooth) and lets say i use it on a train where the line speed reaches 60mph and the driver hits 62mph on the GPS and then slows down slightly as to reduce speeding, then the GPS goes from 62mph to 60mph, it means the GPS was right with its approximations as the driver was overspeeding. I guess you could call this the "line speed test for GPS validity" or something
The Combined Volume states each traction motor is 250kW, two per powered carriage, therefore 16 traction motors which equates to 4000kW.
On AC: 2.0MW 5car, 4.0MW 10car. DC will be lower than this
A lot more than the 707 then! Considering they're 5 cars, they have 1,200 kW, and according to what you're saying the 5 car 701 would have 2,000 kW
With the greatest of respect, rumours are utterly pointless being reported on here. Even those who supposedly know what is going on are giving different stories - which is presumably indicative of SWR’s corporate (in)competence. Best waiting for something to actually happen.
Tell that to the rest of this site haha
It wont be that high on DC . Its likely that they are nearer between 1200kw-1300kw as a 5 car and 2400kw-2600kw as a ten car .
the 701s are probably closer to that 707 feat than 2000kw. 701s hace the unfrustructure to use 2000kw-4000kw but likely power capped on DC
I wonder if work on the third rails or substations will ever be done to accomodate for greater power draw at 12 cars? They acceleration really just taps out near 75mph 80mph . Esspecially on the hills or inclines
If it’s 3 round trips before the end of the year then it’ll surely be 2026. I’ve been predicting that all along.
They’ve been upgrading the power supply route by route ever since slam door stock replacement started. Theres a lot of new kit around once you notice it. NR will only fit the minimum possible upgrade to support the known train plan, so will always be playing catchup.
Waterloo to Southampton and Reading are upgraded for high current railway which is 6kA maximum/train which is nominally 4.5MW when its off these routes its 4500A and presumably use GPS to select which current limit to use. So its potentially possible to get close to installed motor output although train hotel load needs to be deducted.
On SWR has been going on for years. From memory a lot of the suburban area was 660v until the 4SUBs were withdrawn around 1983. Redevelopment saw the loss of some the original 1915 era huge brick substations (eg Kingston), these were originally manned and had rotary converters from ac to dc.
The Reading route had the power supply upgraded not that long ago in connection with the 10-car railway and proposed 4tph all-day service.
I wonder if t
ive heard that. I think it should probably be bolstered to handle greater power feeding. At least the criteria should be to enable the train to reach max speed in a reasonable tmeframe.
4.5MW sounds reasonable.
