actually,the situation is, i am working on a project, in which i need everything very light, working on the aerial vehicle,thats why i cannot employ wiper motor,as my another friend uses it in autonomous welding machine.and other way make a use of BLDC/DC motor with a mechanical gear system may decrease its mechanical advantage and i have to lift a body of 700grams, by the way my real concern is three phase spindle motor circuit ,so have care about it. thanks