i need to know if its possible to run hub motor kit without the controller.the controller merely controls the speed and wattage needed to power the hub isnt it?pls correct me if im wrong. i know theres more to it than what i explained bout controller's function.with the price of controllers and the frequency of fryin one out, i was thinking bout just using an 'always-open high amperage switch".just so i can just press the switch if i want to power up the hub.what are the downside of this setup?any help will be appreciated. ty.