The Anonymous Widower

Greater Anglia’s Class 755 Trains Seem To Have Bags Of Grunt

This article on Rail Magazine, is entitled IN PICTURES: Greater Anglia Unveils First New Stadler Bi-Mode Train In Switzerland.

The text with the excellent and numerous pictures is informative, with other details of the Class 755 trains.

Dynamic Testing

This starts in July and involves.

  • Sixteen trains.
  • Eight teams.
  • Seven locations across Europe including the Czech Republic, Germany, Poland, Romania and Switzerland.

No-one can say that Stadler are not being thorough.

Entry Into Service

The bi-modes will enter service in Summer 2019, when Greater Anglia hope to have twenty trains in service.

The first Class 755 train will be delivered to Norwich Crown Point depot in October.

Articulated Trains

The trains are articulated and the article has a good image of two carriages showing the join.

Power Car And Car Lengths

The article says that the engines will be located in a power car. There is also an image looking through the power car.

I’m still unsure, whether the length of the train, includes the power car!

There are two versions.

  • Three-car Class 755/3 trains.
  • Four-car Class 755/4 trains.

This clipped image from Wikipedia shows the train formats.

It looks like the four-car Class 755/4 trains, a three-car train with an extra passenger car.

The Class 755/4 train would appear to consist of the following

  • Two full-length drive cars, with passenger accommodation.
  • A half-length power car.
  • Two  full-length passenger car.

The three-car Class 755/3 car train would not have the extra full-length passenger car.

So in terms of full-length passenger cars, train lengths could be as follows

  • Class 755/3 trains – 3 cars
  • Class 755/4 trains – 4 cars

Wikipedia says that each train has the following number of seats

  • Class 755/3 trains – 166 seats
  • Class 755/4 trains – 224 seats

Calculating the seats per car, gives the following.

  • Class 755/3 trains – 55.3 seats/car.
  • Class 755/4 trains – 56 seats/car.

This suggests to me, that the interior of a passenger car is very similar to that of a driver car, which must mean manufacturing cost savings.

Diesel Engines

Both trains are fitted with  16 litre V8 engines supplied by Deutz which produce 478 kW.

The power cars have the following numbers of engines

  • Class 755/3 trains – 2 engines – 956 kW – 319 kW per car
  • Class 755/4 trains – 4 engines – 1912 kW – 478 kW per car.

I suspect that a fifth car could be added to a Class 755 train. This would have 1912 kW and 382 kW per car.

Add a sixth car and this would have 1912 kW and 319 kW per car.

Comparison With A Class 170 Train

Compare these figures with a diesel Class 170 train, which has 315 kW per car.

Both trains are 100 mph trains, built from aluminium, so I suspect that the performance of three-car Class 755/3 and Class 170 trains are roughly the same.

But the four-car Class 755/4 trains have fifty percent more power per car, than the Class 170 train, so these will be no sedate rural trundlers.

Looking at the power figures for five-car and six-car units, they would still have at least as much power per car as a Class 170 train.

Other Possible Routes For Class 755 Trains

Could Class 755 trains be a replacement for routes like the following?

  •  Aberystwyth to Shrewsbury
  • Basingstoke to Exeter – Stadler are doing third-rail in Liverpool
  • Birmingham to Stansted Airport
  • Cardiff to Holyhead
  • Cardiff to Shrewsbury
  • Holyhead to Liverpool via Halton Curve
  • Holyhead to Manchester Piccadilly
  • Liverpool to Norwich
  • Milford Haven to Manchester Piccadilly
  • Swansea to Shrewsbury

Trains could be any suitable length from three to six cars.

Note that electric FLIRTs can attain 125 mph, so could we see a train with the following characteristics?

  • 125 mph on electrified lines, where operating speeds allow.
  • 100 mph on lines with no electrification.

This performance is not far off Hitachi’s Class 802 train.

The other major competition could be Bombardier’s proposed 125 mph bi-mode Aventra, that I wrote about in Bombardier Bi-Mode Aventra To Feature Battery Power.

The winners will be the train operating companies and their passengers.

A Video

Greater Anglia have put a video on YouTube.

Conclusion

The Class 755 trains certainly seem to have bags of grunt!

May 4, 2018 - Posted by | Travel | , , , , ,

4 Comments »

  1. The 755/4 are arranged with a driving trailer:intermediate trailer: power car: intermediate trailer: driving trailer arrangement. The 755/3 have one less intermediate trailer, and of course are designed to allow conversion to a /4 by the addition of an intermediate trailer. Apart from the first and last bogies in the driving trailers, all other bogies are in the articulation between carriages. By recollection the passenger carriages are quite short, with an overall length of a /3 being about 70m and a /4 about 82 meters. The length means you can’t double up units in the bay in Ipswich as is customary now and hence why the Peterborough services will run to Colchester in future. The power cars have no seats and could be removed in future to allow the rest of the BMU to become an EMU. Of the diesel power car could be replaced instead by one running on ‘bionic duckweed’!

    Comment by Peter Byrne | May 4, 2018 | Reply

  2. Thanks! I’m going to go to Italy in the Summer to see the Italian trains between Turin and Aosta. I’ve seen the earlier Stadler trains with a power car in the middle in Germany, although I didn’t ride in one, but there are rumours in Wikipedia, that they didn’t handle too well.

    But the dynamics can be made to work as British Rail’s 442 and others have all the electric gubbins and traction in the middle of the train. I came across their dynamics group in the early 1970s, as we had the same PACE 231 R computer that they did. All their work probably helped in creating the superb ride of a Mark 3.

    Comment by AnonW | May 5, 2018 | Reply

  3. […] I suspect they are fairly powerful trains and I wrote about this in Greater Anglia’s Class 755 Trains Seem To Have Bags Of Grunt. […]

    Pingback by The Greening Of The Valleys « The Anonymous Widower | June 7, 2018 | Reply

  4. […] I suspect they are fairly powerful trains and I wrote about this in Greater Anglia’s Class 755 Trains Seem To Have Bags Of Grunt. […]

    Pingback by Stadler Flirt DEMUs « The Anonymous Widower | June 8, 2018 | Reply


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