Bought at Ally Pally earlier this year, my Tri-ang R765 "Lord Westwood" was a bargain. Mainly because it didn't work.
This didn't put me off. Models of this vintage might lack detail, but they are easily fixable with the aid of some simple hand tools. The heart of this, and many others of that vintage, is the X04 motor, a rugged unit that is easy to find second-hand if the original is toast.
The body is removed by undoing a long screw under the back of the cab. The chassis can then be wiggled free for examination.
Inside, there was some fluff, and only one brush on the motor. This looked promising.
You won't be surprised I had a spare set in my stash of bits. The only problem is that the wire on top of the motor was broken. It should be steel, but I couldn't find any, so made up a brass version. I'll keep an eye out for the correct replacement as the softer metal might work, but it won't last forever.
However, work it does, and the locomotive now bumps it's way along the railchairs on Code 75 track (I'm out of Code 100) very smoothly.
In the tender, someone has swapped the wheelsets over to disable the steam noise feature.
The sound is generated by a steel tab rubbing on a strip of abrasive. This sounds a bit crude, but the metal strip is attached to a plastic soundbox to increase the volume.
I've heard worse, and anyway, love a gadget in a model loco, so the wheels have been swapped back, the sideframes can be flexed enough to release them using a small screwdriver.
After this, a good clean up with a stiff brush to remove all the dust and I have a near mint model for the collection. Just the think to wind up GWR fans, and valuable too. From £15, this thing is now worth around £70!