The hobby outrunners come in both varieties: the cheaper ones are surface magnet ones, like this one: https://hobbyking.com/media/file/1010923149X745660X9.jpg h

The hobby outrunners come in both varieties: the cheaper ones are surface magnet ones, like this one: https://hobbyking.com/media/file/1010923149X745660X9.jpg https://hobbyking.com/media/file/1010923149X745660X9.jpg and the slightly more expensive ones have the magnets recessed into a thicker back-iron, and hence have saliency: https://www.electric-skateboard.builders/uploads/db1493/original/2X/7/7bb0b899cb5fedf350a1ea8ecafc8b651c2434f4.JPG https://www.electric-skateboard.builders/uploads/db1493/orig...