dubscottie
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- 4 Apr 2010
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er, Wikipedia says
The engine issues were restricted to the locos used on the Enterprise. Running at full whack while stationary is not good.
Otherwise the 201s are great locos.
er, Wikipedia says
er, Wikipedia says
So it’s a flawed design if it can’t provide HEP without causing engine faults - it was part of the specification for them to work passenger trains daily with HEP working. They’ve been fortunate the Mark 3 generator vans were available for the Enterprise to mitigate the problem.The engine issues were restricted to the locos used on the Enterprise. Running at full whack while stationary is not good.
Otherwise the 201s are great locos.
.......Where are the bogies under the 67s used other than on the 67.
Not entirely true. 68s and 88s can run at max/line speed. I don't know if the same still applies to 67s.Yep for line speeds above 90mph Light engine running is 75mph maximum, line speeds below 90mph LE running is 60mph maximum.
Didn't know Class 67s were ever allowed to run at 100mph LE at any time. Wow what a wild ride!!
Diesel Gen sets and Stand-by generators seem to work OK, and they run as planned while going nowhere! Are you saying that the 201s ran flat out even if they were only delivering "hotel power?"The engine issues were restricted to the locos used on the Enterprise. Running at full whack while stationary is not good. Otherwise the 201s are great locos.
Definitely sounds like a flawed design to me...So it’s a flawed design if it can’t provide HEP without causing engine faults - it was part of the specification for them to work passenger trains daily with HEP working. They’ve been fortunate the Mark 3 generator vans were available for the Enterprise to mitigate the problem.
Are you saying that the 201s ran flat out even if they were only delivering "hotel power?"
Definitely sounds like a flawed design to me...
So it’s a flawed design if it can’t provide HEP without causing engine faults - it was part of the specification for them to work passenger trains daily with HEP working. They’ve been fortunate the Mark 3 generator vans were available for the Enterprise to mitigate the problem.
The 201 head end power is ac 3 phase 415 v like hst but unlike hst is locked to 50 hz with an aux gen directly connected to engine. So idle speed is very high and corresponds to full engine rated speed.
That’s very interesting. So was the problem with the CIE 201s a lack of airflow around the radiator groups whilst idling at high revs?The 201 head end power is ac 3 phase 415 v like hst but unlike hst is locked to 50 hz with an aux gen directly connected to engine. So idle speed is very high and corresponds to full engine rated speed. Traction is controlled by a separate alternator rectifier to control speed.
Uk eth practice is 650 to 1000v dc or ac. Output does not require a fixed engine speed so can be much lower than cie 201. Class 68 fir example, eth is tapped off the dc link to the ac traction converters.
That’s very interesting. So was the problem with the CIE 201s a lack of airflow around the radiator groups whilst idling at high revs?
Does anyone know why EWS went for the 67 design instead of a Pax 66?
So it’s a flawed design if it can’t provide HEP without causing engine faults - it was part of the specification for them to work passenger trains daily with HEP working. They’ve been fortunate the Mark 3 generator vans were available for the Enterprise to mitigate the problem.
Not entirely true. 68s and 88s can run at max/line speed. I don't know if the same still applies to 67s.
It does indeed, 67s are still not subject to the normal light engine speeds. They also have further dispensation between Shrewsbury and Cardiff only to run at MU speeds when hauling MKIIIs.
It was negotiated between ATW / the Welsh Government and Network Rail, specifically for the North-South loco-hauled express. (I think it only appeared for the 67s, not the earlier 57s.)That's interesting! Where did that dispensation come from?
It was negotiated between ATW / the Welsh Government and Network Rail, specifically for the North-South loco-hauled express. (I think it only appeared for the 67s, not the earlier 57s.)
That'll explain my recollections. Thanks for the details.It wouldn't have been much use with the 57s anyway as other then the buffet car it was MKIIs in those days and as there were only 4 cars in the formation the set was already limited to 80mph.
Yup! Example here -
I believe the reason was because the HEP comes off the main generator rather than there being a separate one for HEP.
2 are booked for UK railtours Euston to Bridgenorth this Saturday - assuming it will be the Belmond pair again?
Yep... made a nice changeTurned out to be 67006 and 67004 so not the Belmond pair.
I can well believe it; for a small class all delivered in a single squadron scheme they now exhibit quite a range of liveries:I went by Wembley Yard yesterday, Sunday 17th, at about 1115 and again at 1545 and I am sure I saw 4 or possibly 5 Class 67s in at least 4 different liveries. The only number I saw was 024 coupled to another in a brown and cream paint job.
Interesting. I only ever recalling seeing one Serco CS liveried 67. Always seemed to be an EWS 67 or im the final days DB red. Interesting that is.I can well believe it; for a small class all delivered in a single squadron scheme they now exhibit quite a range of liveries:
In addition, 67004 and 010 have carried Caledonian Sleeper midnight teal livery but have since been repainted DB red.
I don't think 67018 is actually DB red - think it is "Canadian" red. It certainly isn't in DB standard style.I can well believe it; for a small class all delivered in a single squadron scheme they now exhibit quite a range of liveries:
EWS Red & Gold (As delivered, now 67007-009, 011, 016/017, 019/020, 022, 030)
DB Cargo Red (67004/010/013/015/018/028)
Royal Train Dark Plum (67005/006)
Wrexham & Shropshire/Chiltern Grey & Silver (Originally 67010, 012-015, now 67012/014)
Arriva Trains Wales Dark Blue (67001-003)
Transport for Wales Light Grey (67025, more to follow)
Pullman Umber & Cream (67021/024)
Diamond Jubilee Silver (67026)
DB Executive Train Silver (67029)
Colas Rail Orange/Yellow (67023/027)
In addition, 67004 and 010 have carried Caledonian Sleeper midnight teal livery but have since been repainted DB red.
I don't think 67018 is actually DB red - think it is "Canadian" red. It certainly isn't in DB standard style.