Could someone please tell me how easy or difficult it is to set up my loco to operate vacuum braked rolling stock? At the moment I have to use the mechanical brake on the driving trolley but I will soon have the option of using some vacuum braked stock. Do I just need an extra steam valve and if so what steam pressure is needed, if I lose pressure will it still work? or how do I create the vacuum? Thanks Garry MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.