Odie: as you point out - the whole purpose of either sliding or swiveling headstock is to allow you to position yourself directly in front of the workpiece. You're essentially getting the bed out of your way. It seems to me that sliding headstocks have the advantage of using the same basic hardware configuration for the banjo and toolrest, and more consistent alignment of the centers; everything just moves to the end of the bed. If you need the tailstock, it's still an option.
Rotating heads need an alternate arrangement to get the toolrest in position relative to the workpiece - attachments or more complex mechanisms that allow the toolrest to reach the new position. As much as I like a well engineered complex mechanism, simple methods of solving simple problems always seems to work better for me in the long run.
I'm on my second sliding head lathe, having started out with a rotating head model. I use the feature a lot and appreciate the simplicity of just sliding everything where I want it.
Hi JeffSmith......
Just to correct your misconception of what I wrote......the advantage of a swivel headstock lathe isn't to position yourself directly in front of the workpiece. The advantage is to place the bedways in a position that allows it to still be a steady point for your body, in varying degrees. With the sliding headstock, the spindle is always parallel to the bedways, therefore not as versatile for the purpose I mentioned.
If you need to use the tailstock, then leaning on the lathe isn't a requirement anyway, and unless there is something that I am not considering, there is no reason to not have the headstock positioned parallel to the bedways, when using the tailstock. (Of course, the alternative isn't possible anyway, but if it were, and there was a good reason to do it, then it would be a major conundrum.)
I'll reemphasize that IMO, there will only be a very small number of turners who will see this as a great advantage, and it doesn't mean that those who have, or did have a swivel headstock, will be able to realize this. It's a matter of applying technique to the mechanics of the configuration, not applying mechanics of the configuration to the technique.
I have wondered about the banjo, and how it will accommodate the swivel headstock. On the back side of a turning, it isn't going to work. On the front side, it's very likely going to need some additional reach. Not sure, at this point, whether this is going to be an issue, but without making the banjo a few inches longer, it seems like it could be an issue for turning maximum diameters. (max for VL240 is 19 1/4")
Whether there will be enough turners who will, or can see any advantage to a swivel headstock to make it a successful venture, remains a gamble on the part of Vicmarc. To spend $5000+ on a 19" swing lathe will mean that the swivel headstock is the ONLY reason for justifying the expense. To my thinking, it very well could justify the expense for my woodturning, but I also will take into consideration that I have been able to do everything I need to do on my long bed lathe, with some inconveniences that can be overcome. A sliding headstock, for my purposes, does seem to have some built-in disadvantages for what I intend to do with it......
ooc