Having mulled it over!

It has been a few days since the Trumpeter L/15 Mörser "Bär" was last reported on with the problems with the tracks. Having mulled the matter over and having Mr Beecham also mention the same solution I was thinking about, the upper length of the tracks have been glued to the tops of the running wheels. UHU glue was used and the tracks were pushed onto the glue by some carefully placed shims - mainly ice cream sticks!

Having been left a few hours, the various shims were removed and thankfully the track sat as more or less intended. It just needs weathering but it looks a lot better then it did. Just the other side to do!

As I had some time I decided that it was time to rn a few trains. My enthusiasm was somewhat curtailed by the continual derailment of a coach. It was not the track as it happened in random places. It was time to investigate and I had suspicions that it was related to one of the bogies. I have in my colection of model making tools this handy pair of items. A wheel back to back gauge and some axle bearing reamers which I thought would be useful to dig out before getting into the coaches problems.

Looking at the bogie there were signs that the wheels were not rotating easily and that the bogies swing was not smooth and it could not swing fully in one direction - enough to cause the derailment issues. Taking the bogie off the underframe to the coach revealed Bachmann's close coupling system with some dust and debris in it. Once cleaned out things were better.

I decided to check how easily the wheels turned - not very! Out came the axle reamer which cleared some crud out of the bearings.

With both wheelset bearings done the wheels spun much more freely. I thought that I would also take the opportunity to check the back to back measurements which is the distance between the back of one wheel to the back of the other. Too wide and the wheels  ride over the rail, too narrow and the wheels fall off the rail. It should be, for normal 00 gauge, 14.4 to 14.5mm. I could use a micrometer to measure it but handily the gauge I have is set at 14.5mm and forcing it into the gap between the wheels revealed that these wheelsets were a bit too narrow. By pushing the gauge in, the wheels, which are a push fit onto their axles, moved out to the correct distance. 

With that done and everything reassembled, an uneventful but pleasant running session took place! Just right to be able to mull over what I doo after finishing the  L/15 Mörser "Bär".