The Anonymous Widower

Aventras Have Underfloor Heating

I have underfloor heating in my house, so why shouldn’t trains.

In this article on Global Rail News, which is entitled First look around Greater Anglia’s Bombardier Aventra mock-up, this is said.

Instead of body-side heaters encroaching on leg room, under-floor heating has been used, seats are cantilevered too to save on space and there will be no doors separating vehicles.

These pictures show the heating in various trains.


Can this be why the Class 345 trains give an impression of width?

September 14, 2017 - Posted by | Transport | , ,


  1. Why are the Aventras for Greater Anglia in a 3+2 seating configuration? How can they ruin a great train with such a poor layout? Is there a reason they are only 10 cars?

    Comment by William J McIntyre | September 14, 2017 | Reply

    • I puzzled about the 3+2 seating, as I don’t like it. But Bombardier have been clever by designing a train with thin, but very strong outer skins and then hanging the seats on the train sides, which means they have perhaps another eight inches or so between the walls. So by putting in 3+2 seating in part of the train, they increase the number of passengers who get a seat. It also means that if you’re in one of three seats you have as couple more inches.

      Remember, there has been a lot of criticism of the Thameslink trains and their seats. I think Greater Anglia and Bombardier have gone for a compromise.

      As to the length of 10 cars, the trains would appear to be about six metres shorter than a 12-car 321 train or 360 train. But then there is no wasted space between cars as the trains are articulated.

      So because they are wider inside and there is no wasted space between cars, the caspacityisn’t probably much different.

      Comment by AnonW | September 14, 2017 | Reply

      • Are there infrastructure issues that prevent train lengthening to 12 which would allow an ultra spacious 2+2 layout?

        Comment by William J McIntyre | September 14, 2017

  2. Nothing has been said or hinted, although Liverpool Street does have some platforms that need lengthening.

    But with a long train turning round at terminal station like Southend Victoria or Clacton, it could be that the walk the driver takes determines the dwell time at the station. Shorter trains would speed this up.

    It might also be due to the fact that five-cars is a very convenient length for an Aventra and two running together would be the same length as a ten-car.

    I also think, that some services will leave Liverpool Street as two five-car trains running as a ten-car and split en-route.Coming into London, they would reverse the process.

    Liverpool Street to Walton and Clacton could split and join at Thorpe-le-Soken.

    This saves paths on the main line into London and means extra services can be squeezed in.

    Comment by AnonW | September 14, 2017 | Reply

  3. […] I said in Aventras Have Under Floor Heating, it would appear that the Greater Anglia Aventras do have under-floor heating, so perhaps this is a […]

    Pingback by Details In A Class 345 Train « The Anonymous Widower | September 20, 2017 | Reply

  4. […] The Greater Anglia Class 720 trains have underfloor heating as I detailed in Aventras Have Underfloor Heating. […]

    Pingback by Big On The Inside And The Same Size On The Outside « The Anonymous Widower | December 18, 2017 | Reply

  5. […] post is entitled Aventras Have Underfloor Heating. On a cold day will this act a bit like a storage heating and keep the train warm if the power […]

    Pingback by Battery Trains On The Uckfield Branch « The Anonymous Widower | August 26, 2018 | Reply

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