抄録
The acceleration in the loading motorcycle steering wheel on non-pavement road was measured. The maximum acceleration increases from 85m/s^2 to 142 m/s^2 when the running speed increases from 10 to 20 km/h, and the average acceleration has increased from 13.2 m/s^2 to 26.1 m/s^2 similarly, too. The maximum acceleration has decreased from 131 m/s^2 to 52 m/s^2 when the tire inflation pressure of the loading motorcycle is decreased from 950kPa to 200kPa. Moreover, the average acceleration has decreased from 24.6 m/s^2 to 12.4 m/s^2, too. The number of cyclocross tires has decreased from 125 m/s^2 to 57.5 m/s when the tire inflation pressure is decreased from 600kPa to 200kPa The maximum acceleration decreased decreasing in the result tire air pressure that did the front wheel fall test from 120mm in height, and a tendency almost similar to the real run test was shown. When the cyclocross frame made of CFRP was used, both maximum accelerations and the average accelerations indicated a high value from the steel frame. As for the maximum acceleration, it decreases, and it has been understood to decrease from the loading motorcycle running in 20 km/h running on non-pavement road, installing the tire for the cyclocross in the cyclo made of CFRP crossing frame compared with, and adjusting the tire inflation pressure to 200kPa 15.1 m/s^2 of 40% decrease in average acceleration of the former 1/3 of the former 43.4 m/s^2.
