Those are underframes for DMUs

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Quote from: mjkerr on March 02, 2013, 10:55:51 AM
Presumably you mean the single fan on the Mark 2F
The fan arrangement is the same on the Mark 2D and 2E

Hi

I did but I'm sure some of the E got this type but could be wrong.
Unless the caption on this photo is incorrect this is an E with the single fan middle picture bottom row.
http://ukrailwaypics.smugmug.com/Coaches/Mk2-Coaching-Stock/Mk2E-BSO-9496-9509-AE2E/16394270_BKmtrG#!i=1278884450&k=rhKdCKv&lb=1&s=A

Bob I will see if I can find a better picture or drawing.

Cheers

Paul

As discussed before, the BSO only has one of the two fans, you see on the Mark 2D and 2E

If someone can give me the diameter of the housing....................................

Quote from: mjkerr on March 02, 2013, 10:25:45 PM
As discussed before, the BSO only has one of the two fans, you see on the Mark 2D and 2E

Hi

Ah I see what you mean now, you are correct it is only the F that has the fan I meant.

Cheers

Paul