Usenet Newsgroups Re: Add Motor to Grape Crusher From: fishziblu@gmail.com (fishziblu) Hi, A motorised crusher does not need speed, but would do with some torque. I am assuming that your manual grape crusher consists of two square toothed rollers, within a hopper. A 300W or 0.75hp motor would do. A pulley system/ or gear will step down the speed and give you enough torque.  The pulley system has an advantage of slip in case the system breaks to halt, therefore protecting both the crusher and the motor. Make sure you have a handy pushbutton switch nearby, to stop it immediately. (or a load protector which would do that automatically). Such a motor would rotate at a no-load speed of about 1500-2000rpm, which is way too much. You would need to gear it down. Aim for 60-90 rpm. Since this is a wet environment, insulate/cover all your electrics and connections. Recommendation for IP67 switch. fishziblu Subject  Add Motor to Grape Crusher  Re: Add Motor to Grape Crusher  Re: Add Motor to Grape Crusher  Re: Add Motor to Grape Crusher  Re: Add Motor to Grape Crusher  Re: Add Motor to Grape Crusher  Re: Add Motor to Grape Crusher