It seems that theree is no universal, or even generally agreed, standard for the couplings between loco (tender) and driving trolley, and trolley and passenger cars. The most common one that I have seen is the flat bar, with pin dropping in hole in bar and into brackets fixed to each vehicle. However, the size of bar and pin seems to vary. Has anyone any information on couplings? What does your club use? What is used in other countries? alan@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx www.alanstepney.info Model Engineering, Steam Engine, and Railway technical pages. 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.