Just seen a photo on the Rail Scene website of it passing Hartford last night looking very smart and the pan is up too.
Hopefully a loaded test tonight.
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Class 93 Tri-mode Loco
- Thread starter ExRes
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Hopefully a loaded test tonight.
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tumbledown
Member
And we're off.
Shame the Crewe Heritage Centre railcam is offline.
Another loaded test in for tonight.
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after a run tonight?
Class15
Established Member
Is the testing complete or will it still have to do yet more?
12LDA28C
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I'd suggest it's nowhere near complete.
Class15
Established Member
Can you elaborate on what still needs to be done? I don’t recall any other locomotive needing this much testing.
12LDA28C
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No, but as UK main line testing has literally only just started I can't imagine the locos are anywhere near ready for acceptance into traffic yet. Testing with a heavy load would need to be done for a start, surely?
Would imagine the contract calls for a figure of 1000s miles in trouble free operation. If there was a breakdown or problem identified the clock would start again from zero.
So probably not anywhere near an acceptable figure Apart from testing at Old Dalby 93001 has made a few trips from Worksop to Crewe and 2 return journeys to Carlisle.
The plan was for nighttime journeys on the WCML then daytime testing.
The same will apply to all subsequent locos, when delivered.
Peter Sarf
Established Member
I am going to assume 93001 undergoes even more testing than acceptance testing. Type testing for a new type will be even more involved I expect.
Belfastmarty
Member
I think there will be multiple.elements to testing going on. Firstly satisfying Network Rail that the 93s are safe to operate on the system. Secondly ROG being satisfied Stadler have delivered what they committed to contractually. And thirdly an element of real life performance testing to determine what these locos.might actually be suitable for.
Trainman40083
Established Member
Hopefully they don't turn the signals or lights out when on OHLE. I'm sure some previous electric locos have, with signalling interference.
Wyrleybart
Established Member
Really ? Do you have evidence of that ?
I read that the class 442s had some kind of an issue on the LSW mainline which may be the reason why they were withdrawn and mostly broken up after many millions pounds worth of new kit had been installed in them, but not any significant AC issues.
Class 92s caused issues on wcml in the Warrington area when they were first used.
Rail Quest
Member
93001 looks to be back out running light atm: https://www.realtimetrains.co.uk/service/gb-nr:39176/2024-12-13/detailed
norbitonflyer
Established Member
I don't think they've caused signals to go dark. More likely that induced currents in the running rails could interfere with the track circuits and turn signals to red.
It is to minimise such issues, because return current runs through the running rails, that on ac electrified lines, DC track circuits are used, and vice versa.
Photo below from a friend, it also has a 37 in tow for insurance.
Attachments
Nym
Established Member
There are many things one can read on how the 442s came to be scrapped.
The long and short is always going to be, "Because the DfT deemed it to be so."
The stock will return to Crewe in the New Year, with 82306 replacing 9525 for further test runs.
Nottingham59
Established Member
Have the 93s done any testing under heavy loads yet? No potential customer is going to use them until they have demonstrated what tractive effort they can deliver under load.
Will it be operating as push-pull with the dvt?
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Doubt it, this is one of those modified to work with 67/68s?
Rail Quest
Member
I'm assuming 9525 is the MK2 so swapping that out would allow them to test 110mph running, presumably.
Nym
Established Member
Who’s to say that the 93s aren’t or won’t be fitted to work with the Mk.4b and Mk.4c?
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It's not the coaches but the communication system between the loco and DVT. Originally the DVTs were built for use with TDM system but then rebuilt to use the ARR system of the 67s (and renumbered in the 823xx series), I believe it's a similar system on the 68s. Think 68s are fitted with TDM but when the 68s took over from the 67s on Chiltern services they modified some locos to the ARR system instead of modifying the DVTs hence why only certain 68s can work Chiltern services?
Have done one loaded test run from Crewe to Carlisle last week. A couple of others in previous weeks. Only 8 MK3 coaches in the consist though.
Freightliner were keen to try the 93 but nothing concrete as yet
Nym
Established Member
68s, 88s and presumably 93s have an MVB Multi-Working within class over the UIC jumpers.
68s for Chiltern have an AAR Translator fitted.
Mk.4c DVTs are converted to AAR plus some additional wires to make comms work between the loco and DVT for passenger formations, also meaning modifications to the respective 67s.
There's nothing to stop a 93 being fitted to the same AAR style through working of the MK.4b coaches and Mk.4c DVT.
craigybagel
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Technically, no. Practically? It's hard to see any potential customer wanting MKIV compatibility and therefore justifying the cost of modification.