My lathe has started to run very noisily. I had suspected a bearing or motor bush and anticipated a costly strip and rebuild. However, a chat with the ever helpful guys at Amadeal suggested its simply a mechanical rubbing. The forum at modelengineering.com was also very helpful and identified the noise as the change gears "singing" which apparently they do when incorrectly meshed. I did know that the gear mesh is important and the usual manner to set this is to use a piece of paper between the the teeth. This I had done- but perhaps incorrectly?
I removed the change gear cover to inspect
In fact the gears turned out to be running quite silently, but the top of the sluder (AKA banjo) was rubbing against the spindle.
A really simple fix! Just loosen the Allen cap screw at the base of the banjo and move it out of contact with the shaft but not enough to move the gears.
Retighten the screw and Hey Presto- job done! Nice quiet lathe!
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I'm new to machining- finding my way largely by bludgeoning my way around the metal so all comments, corrections, suggestions and improvements welcome!