In this form it was about 840 yards (760 metres) long, and ran from a station at the Queen's Gate, parallel to the Eastern and Northern Carriage Drives, to a station at Chelsea Bridge, via a "halt" at the Funfair. It continued with other Barlow locomotives until 1975, when the line closed, partially due to the decline of the funfair itself.
In its current form, it measured approximately 840 yards (760 metres) in length, stretching from a terminal at Queen's Gate to one at Chelsea Bridge, with an intermediate stop at the Funfair. It operated alongside other Barlow locomotives until 1975, when the line was shut down, partly due to the decline of the funfair.