I'm getting a clunck cluck clunck clunck in sync with the speed of two of my Trainorama locos. First happened to my Trainorama VR S class (Blue and gold) and now it has happened to my Trainorama ANR 900 Class (maroon).
The great load it is under the worse it is. The video has a load of 4 cars. If I give the loco a bit of assistance, it is no where near as bad.
See this video. (2 minutes).
I pulled the VR S Class right down to individual cogs and gears to try and fix it. Couldn't find a thing wrong with it. Broken cog or whatever. Put the VR S Class back together and it still did it.
Before I go pulling the 900 class apart, has anyone any idea what might be causing this?
Much appreciated for any advice anyone may have.
Taa in advance,