Hexworthy will be at Narrow Gauge South at Eastleigh on Saturday, so I have been carrying out the usual preparations (a quick vacuum) and testing (running all the train combinations I can think of). There were a few minor jobs to do too, including looking at the exhibition fiddle yard following some occasional issues at it's last outing at Chatham last year.
The probable cause of the occasional derailment or unwanted uncoupling was mismatched rails between the lead track and the traverser. A couple of rails needed lateral adjustment, but several had a slight change in height. The rails are soldered to PCB strip either side of the join, so adjustment meant applying a soldering iron until the solder melts and holding the rail in the right place (including up slightly where needed) with pliers while it cools. All seems good now, hopefully it will stay that way!
The deck had become stiff to turn, and had started squeaking when turned. The pivot is simply a bolt which had a washer, nut, and locking nut underneath - the lock nut preventing the nut coming undone. When I looked underneath I found the nut had wound itself tighter upward into the wood support, forcing the washer with it - while the locking nut stayed where it was. Here, I've removed the lock nut and the normal nut is about to be removed, but the washer remains embedded about 2-3mm into the timber.






















