Hello I am new here and I have a question. My son found an old mini bike frame and brought it home.its in really bad shape.it sat outside somewhere for many years.but he still wants to restore it and get it rideable again.i have no idea what it is and could use some help from anyone knowledable.any help would be appreciated.i can add pics later of the frame.i need to know what these rims are and what size bearings,spacers,bushings and what not go in them??