Whilst awaiting various bits and bobs including, thanks courtesy of massive help from Greg Emassian, metal rods from Nevada(!) I noticed on a video of another loco that the centre axle wheel on both the tender and 6 wheel coach do not rotate when the train is in motion. This is because they are slightly smaller radius and have no flange. Not too much of an issue at a distance perhaps but very annoying at closer range plus, they are BIG and close range is quite far away!
As a trial and probably temporary measure until I find something better, I decided to run elastic bands around two adjoining axles.
When I removed the well engineered bearings I was surprised to see the detail. A loose plastic bearing held in by a metal bearing cap.
Initially, I simply replaced the plastic bearings and screwed down the bearing caps. Result? A binding axle!
On disassembly and close inspection I discovered that the plastic bearings have a small collar at one end which fits into a matching groove in the fixed part of the axle box and the bearing cap has a corresponding wider groove.
Remarkably sophisticated.
Re-assembled correctly and all is well.
My solution to stationary axle is a reasonable success, the axle doesn’t rotate at quite the same speed as the outer one and so the failure rate of the laccy bands might be high but pending any other remedy I will live with it pro tem.
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