Outboard motor for lathe threading? Really? Ideas welcome!

[Crusty]

From the title I mentally pictured an Evinrude or Honda connected to a lathe. What a letdown when I discovered the error of my interpretation. Oh well, cooling would have been a nearly insurmountable problem anyway.

Don't discount toothed belt drives though. One of the reasons that they're seen in so many places is that they handily solve a variety of engineering problems.