Abstract: A reaction force adjustment support device includes: a pressure data storage unit storing pressure data of respective spring chambers; a graphic user interface unit displaying a display screen; a reaction force calculator calculating reaction force data by using the pressure data of the respective spring chambers stored in the pressure data storage unit; a graph generating unit generating a graph of reaction force characteristics by using the reaction force data calculated by the reaction force calculator; and a controller displaying a screen for adjusting a reaction force where the screen has an operation portion for adjusting spring pressures provided for the respective spring chambers and a drawing area of the graph on the display screen, and controlling the reaction force calculator and the graph generating unit by user's operation with respect to the operation portion with the pressure data changed for the respective spring chambers to vary the graph.

Abstract: A reaction force adjustment support device includes: a pressure data storage unit storing pressure data of respective spring chambers; a graphic user interface unit displaying a display screen; a reaction force calculator calculating reaction force data by using the pressure data of the respective spring chambers stored in the pressure data storage unit; a graph generating unit generating a graph of reaction force characteristics by using the reaction force data calculated by the reaction force calculator; and a controller displaying a screen for adjusting a reaction force where the screen has an operation portion for adjusting spring pressures provided for the respective spring chambers and a drawing area of the graph on the display screen, and controlling the reaction force calculator and the graph generating unit by user's operation with respect to the operation portion with the pressure data changed for the respective spring chambers to vary the graph.

Abstract: In an outer tube for a front fork, a metal upper collar to which an upper vehicle body attaching bracket is connected is fitted and attached to an upper end portion of the plastic pipe, a metal sleeve is fitted and attached between an intermediate portion and a lower end portion of the plastic pipe, and the sleeve is provided with a lower collar to which a lower vehicle body attaching bracket is connected, and a seal case for inserting and supporting the inner tube.

Abstract: An outer tube for a front fork having an FRP pipe body which is subjected to braiding processing using a braider, wherein the FRP pipe comprises a combination of braids interlacing with each other at an interlacing angle ±?° with respect to a center axis of the pipe and warp fibers having an angle 0° with respect to the pipe center axis, rigidity of the plurality of warp fibers disposed at positions in a circumferential direction of the pipe is varied depending upon the positions in the circumferential direction of the pipe, and bending rigidity of the FRP pipe in the longitudinal direction is varied in the circumferential direction of the pipe.

Abstract: In an outer tube for a front fork, a metal upper collar to which an upper vehicle body attaching bracket is connected is fitted and attached to an upper end portion of the plastic pipe, a metal sleeve is fitted and attached between an intermediate portion and a lower end portion of the plastic pipe, and the sleeve is provided with a lower collar to which a lower vehicle body attaching bracket is connected, and a seal case for inserting and supporting the inner tube.

Abstract: An outer tube for a front fork having an FRP pipe body which is subjected to braiding processing using a braider, wherein the FRP pipe comprises a combination of braids interlacing with each other at interlacing angle ±?° with respect to a pipe center axis, a value of an interlacing angle ±?° of the braids during the braiding processing period is varied, and bending rigidity in a longitudinal direction of the FRP pipe is varied in along longitudinal extent.

Abstract: An outer tube for a front fork having an FRP pipe body which is subjected to braiding processing using a braider, wherein the FRP pipe comprises a combination of braids interlacing with each other at an interlacing angle ±?° with respect to a center axis of the pipe and warp fibers having an angle 0° with respect to the pipe center axis, rigidity of the plurality of warp fibers disposed at positions in a circumferential direction of the pipe is varied depending upon the positions in the circumferential direction of the pipe, and bending rigidity of the FRP pipe in the longitudinal direction is varied in the circumferential direction of the pipe.

Abstract: In a hydraulic shock absorber for a vehicle in which a slide pipe is slidably provided within a cylinder tube, and a working fluid chamber is provided within the cylinder tube and the slide pipe, a guide bush coated with a polytetrafluoroethylene and an oil seal sealing the fluid chamber are provided in an inner periphery of the cylinder tube so as to be in slide contact with an outer periphery of the slide pipe. An amorphous hard carbon film is formed on the outer peripheral surface of the slide pipe.

Abstract: In a hydraulic shock absorber for a vehicle in which a slide pipe is slidably provided within a cylinder tube, and a working fluid chamber is provided within the cylinder tube and the slide pipe, a guide bush coated with a polytetrafluoroethylene and an oil seal sealing the fluid chamber are provided in an inner periphery of the cylinder tube so as to be in slide contact with an outer periphery of the slide pipe. An amorphous hard carbon film is formed on the outer peripheral surface of the slide pipe.