I have had a problem with one of my second hand coaches derailing on an increasingly regular basis. It is always best to carry out an inspection of the track work first just to see that there is no problem there and there was not. Looking at the bogies on the coach I noted that on one of them the wheels had a lot of sloppy movement that meant they were not running true. This was because the plastic bearing face in the bogie frame had worn.
I could have got a new bogie but I had in stock a pack of brass pin point bearings. All I had to do was to put these into the bogies where the pin point axles of the wheel sets locate. In true Woody botch style rather then drill out a suitable hole I used a soldering iron to heat up the brass bearing and in effect 'sink' it into the plastic bogie frame.
Putting the wheels back in the coach runs without derailing - Result!
