At the moment we are having local verge collection so lots of washers and dryers to pull motors out of. So I now have a few motors and the ones from the washing machines are brushed variable speed motors. The problem is the are variable from 300 to 14000 rpm. I really don't want to use it at a constant 14000 rpm and have multiple drives with pulleys to get the right speeds. So how best to control the rpm electrically. It is a 1 phase motor on 240v at 50hz. Any suggestions would be welcomed. The cheaper and simpler the better. Cheers