Yep its an industrial.Originally Posted by mickey
I am going to run mine ( I am looking to get a 31-15 soon) on my treadle in my studio. You could run a smaller motor on it if you want to but it will have to have some sort of mounting brackets made up or mounted under a table with a longer belt.
You can use the regular class 15 bobbins and the case my be the same but you need to make sure it is clocked right. the pins can be replaced with ones you can pick up on eBay.
Basically you have a Singer 15 on steroids.