Abstract: A resin fuel tank having a two-layer structure of inner and outer layers is formed by rotational molding so as to be superior not only in appearance but also in weathering resistance, low temperature impact resistance and resistance to gasoline permeability.

Abstract: A resin fuel tank having a two-layer structure of inner and outer layers is formed by rotational molding so as to be superior not only in appearance but also in weathering resistance, low temperature impact resistance and resistance to gasoline permeability.

Abstract: A rear fork for a motorcycle having hollow rear arms and metal end pieces for receiving an axle. The rear fork can be made of integrally molded fiber reinforced plastic. The metal end piece conforms to the configuration of the end of the arm and has locating projections which abut the end of the arm. The metal end piece can be inserted into the arm or can externally surround the end of the arm.

Abstract: A wheel for vehicles comprising a wheel body consisting of a rim portion, spoke portions and a hub portion, and two bearings disposed at the left and right of the hub portion. The wheel body is integrally made of a fiber-reinforced resin and is composed of symmetrical left and right halved bodies. Each spoke portion has a square hollow cross section and is formed including matching flanges of the respective spoke portions of the halved bodies. The flanges are joined together by a bonding agent and mechanical fasteners. The rim portions has a circumferential synthetic resin film coating and a cylindrical projection extending radially inwardly with an air valve fitting hole therethrough.