I know they can get hot. I have my pedal on a wooden floor and have never even come close to hot. I sew up to three class 66 bobbins before I take a brake, usually just one. There's knee controller for a machien in a domed case, and I can't even notice any heat. There has to be some an explanation why some run very hot while others stay luke warm at most? Keeping the pedal on a carpet might gather heat? On the inside of a cabinet there's plenty of space and it's either screwed on to the wood or fotted with a clip. They should not get very hot? We hardly ever have higher temperature than 68F to 73F inside. In the middle of summer heat the machine doesn't get much use, and heat is a rare thing here. What ever the case with the carbon resistors; the new ones are much more precise speed controle.
Last edited by Mickey2; 02-01-2016 at 04:02 AM.