...? are you saying the motors burn up because of use or from people trying to weld the pipe? from what ive heard, they are quite reliable pieces of equipment. and if you mean they burn from being welded then whoever has acheived that is truely an idiot. not only is the motor nowhere close to the welding point but the whole assembly comes off of the y-pipe they include so you just pull it off when you weld anyways. what exactly are you trying to say?