I posted this in the Green Monster G0766 group but it was too long and it wasn't accepted. So I'll throw it up here for any G0766 folks.
I've owned a new G0766 for about 6 months and I use it nearly every day. I think it's a great lathe. From the git-go, I occasionally have a very fine, but severe vibration, for lack of a better way of putting it, when I'm hollowing the center of a bowl. It doesn't happen consistently but it happens enough to concern me. After a period of weeks of turning, i look down and the lathe has walked a couple of inches. The source of the vibration confused me because i couldn't pinpoint it. I thought it might be the head stock or unlevel ways. The lathe is dead level and I was never convinced the headstock was the cause of the vibration.
Anyway, I know this has been discussed before but I was looking for a inside bowl rest and most of them are too short to fit this lathe and banjo. I had an email conversation with robo hippy and he mentioned to me that because of the shorter design of the banjo, the tool rest needed to be longer. He had a concern that because of the longer tool rest, there could be vibration issues, especially when working near the end of the rest. As I was turning yesterday, the vibration developed and I really believe the source of it is at the tool rest. The vibration seemed to disappear or significantly lessen when I was working directly over the post.
Has anyone else had an issue such as this? It makes sense to be because rather than having a taller banjo and a shorter tool rest, we have just the opposite on the standard banjo that comes with this lathe. I'm considering buying a different tool rest.