I didnt know that. Regarding models, and on the subject of spark arresting, a few years ago this was a major topic, but.recently it has rarely been mentioned. I know that some clubs insist on spark arrestors, whilst others appear to have no such rule. What is the general view on this, and which are considered the best types of spark arrestors? Alan ----- Original Message ----- From: "Ian Bramble" <ian.bramble@xxxxxxxxxxxxxx> Alan, maybe doing it in the dark to test its spark arresting capability. A test run at night is a necessary requirement for any loco to get a mainline ticket. Ian 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.