Yeah, it wasn't built for speed. But it is neat to see it work. I hear-tell they have one of these mills, just like this one on the video, that is up near Mackinaw, MI. I think it was built in the 1760's or something like that. I'd love to go there sometime, to see Fort Michilimackinac, I'm a colonial history buff....
Scott, let me know when you plan on heading that way as I'd love to meet you. The fort is a good stop and there are many, many others. One should also plan on a day to Mackinaw Island. Only have to watch your step while there as the transportation is a bit old school. Of course, if you get short on cash you could hire out for a day with a shovel and wheelbarrow.