gabrielhj07
Member
Might just be the video but I've seen much worse from a 455 and even a 450That creaking sound does not sound healthy. Another problem with the suspension on these units.. also notice how much it's shaking
Might just be the video but I've seen much worse from a 455 and even a 450That creaking sound does not sound healthy. Another problem with the suspension on these units.. also notice how much it's shaking
Wasn’t the launch train driven by a Wimbledon Park driving instructor? So clearly it’s not just managers…..
Obviously never been on a 458 then.That creaking sound does not sound healthy. Another problem with the suspension on these units.. also notice how much it's shaking
Unbelievable. They've had years to develop the training programme.They are all being driven by drivers, but it's the same small pool of drivers from day one. SWRs position was that they would use the experience gained from the soft launch to develop and agree the training programme.
508 and 529 (as per photo on wnxx.com)Just seen a pair of 701s pass through Southampton Central, didn't catch the numbers, would anyone know which ones they likely were?
Cheers508 and 529 (as per photo on wnxx.com)
That's four days in a row for the same unit - a new record701037 again today (29th)
To be fair the 777s went quite a while before increasing to 2 disgrams and after a couple of months ramped up quite quickly. Could happen with the 701s too once the programme is agreedBit of a chicken and egg situation, if use the driving instructors to drive then can't be instructing (unless others crammed in watching). If not Instructing then who is doing the driving of the token service.
Sort of bonkers that weeks later cannot introduce a second diagram, as would have thought there should be handful trained up every week, and even at just 5 a week will only have done 240 drivers by Christmas (2024).
Does anybody know when 508 returned from MOD Bicester please?508 and 529 (as per photo on wnxx.com)
0Z20 - light diesel.What 701 was dragged today? https://www.realtimetrains.co.uk/service/gb-nr:53070/2024-02-29/detailed
Anybody know which unit please?Thanks,
Seems as though 47727 went to Eastleigh to take a 701 up to Derby. https://www.realtimetrains.co.uk/service/gb-nr:K01805/2024-03-01/detailed
701012Thanks, Seems as though 47727 went to Eastleigh to take a 701 up to Derby. https://www.realtimetrains.co.uk/service/gb-nr:K01805/2024-03-01/detailed
Not been to Bicester.Does anybody know when 508 returned from MOD Bicester please?
I believe it is now two round trips and has been for a few weeksIs this still running one return journey a day, or are other services operating?
Wow, those things shift!Demonstration of the acceleration on these units, a massive improvement from what it's replacing
Indeed they do!Wow, those things shift!
Desiros could have better acceleration rates they have the installed power but they were software restricted initially to follow VEP/CIG power profile and when the power system was reinforced that software restriction was never removed.Indeed they do!
Based off testing with a GPS acceleration monitoring device and comparing with a number of different results from all the other DC stock (desiro [444 and 450], desiro cities [700 and 707], electrostars [377, 378, 387, 376], networkers [465 [both motors], 466], junipers [458], 455, 777, the 701 is the fastest accelerating 100mph DC unit in the country, and the second fastest accelerating DC unit behind the 777, which is comparatively geared for 62mph (higher top speed gearing = slower acceleration and vice versa) (although I don't have data for the 710, so it might tie with that or be third because it has 90mph gearing).
It beats even the similar Desiro Cities (on DC of course) by a decent margin, especially when it comes to sustained acceleration at higher speeds.
It seems that the data provided on wikipedia is often wrong. The case with the desiros anyway is that the 0.85 figure is actually the AC acceleration rather than the DC, but this isn't specified on the Siemens specification sheet for the unit/s. Obviously they're trying to sell their product so they'd attempt to get higher figures in there without technically stating the power mode.
For the Desiro units, e.g the 450 and 444, they wouldn't ever be able to get to their advertised 1m/s^2 rate as they have such high power draw, meaning that the sub stations are unable to cope and therefore the power has been reduced significantly over the years. They’re quite close, but still behind.
In short, SWR’s “better acceleration” claim is indeed true after all, and to quite an extent as well.
That's very strange, what's the point in reinforcing the power system if you can't use the benefits from it on the train family you have the most of?Desiros could have better acceleration rates they have the installed power but they were software restricted initially to follow VEP/CIG power profile and when the power system was reinforced that software restriction was never removed.
Looks very fast though, interesting to know it can go faster than that.. and also a bit confusing since I did compare a few videos of other units like the 458, 455, and 707 and it beats them there as well so I guess the case is those units accelerate even slower on average than that. Or, and no offence to you or anything, I'm sure you're right, the calculations could be wrong. The GPS data is the most reliable though.From calculations in that video. It was accelerating at about 0.5m/s from standing start. Definitely wasn't on full power.
I can't remember where I read it but the 444 was said to be restricted to 70% of its maximum power and the 450 about 55% of its power.Desiros could have better acceleration rates they have the installed power but they were software restricted initially to follow VEP/CIG power profile and when the power system was reinforced that software restriction was never removed.