Kernnigo, What fan do you speak,of? Is there a an internal fan, or should I add one? If so, how big and where is it placed etc?
I emailed the seller and am likely going to pick it up a few days. He will put an internal limit switch inside the controller to limit the max rpm to 1750. (The motor is rated at 6000 RPM! I don't want that speed ever to kick in around this lathe). Plus an external control to adjust speed during operation, plus a digital tach. If the digital tach is a workable solution, I think I will put one on my old 1919 Dalton Lathe, and another on my 21" camelback drill press. The DP needs a motor installed, but has power down feed on the quill. Iam thinking it will be useful to tweak speeds on this big machine, if the downfeed still proves workable.
The SB guys in 1925 that made this particular lathe would never have imagined how it would be powered and tweaked whilst turning work a hundred years in the future!
Thanks very much for your comments and encouragement to move ahead with the DC setup.
Glenn