Mechanics are naturally curious, they figure stuff out through experimentation. One of the characters in the Electric Koolaid Acid Test, was Hassler. He kept the magic bus going. Or the NZ guy who set a land speed record on a homebuilt motorcycle. Or just about every NASCAR team in the ‘60’s. Motoring is full of characters like these, not formally schooled, but schooled in practice. You don’t need an EE, ME or any schooling at all, you need a willingness to bust knuckles, take things apart put them back again, take them apart, modify them and put them again over and over.