The present invention relates to a system and apparatus used in conjunction with drive mechanisms in vehicles for efficient energy transfer through a pinion assembly and associated bearings to the wheels of a vehicle. A reel member 50A includes a winding spool 52A around which a given film can be wound, and a plurality of flanges 51A mounted on the winding spool 52A and each having a guide groove 53A for passing the film from winding spool 52A on one side to winding spool 52A on the other side of the flange 51A. A method to detect a position of a local coil in a magnetic resonance tomography device Is implemented in this manner as well. The drive roller contacts with the flat belt in the center, pressing it to bend.