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wtaochina:140斤,拔高后座垫比把横低2公分。 (2021-09-09 12:20)
shj117:如果现在是正常身高体重的人骑,可以无视。但坐管不要拨得太高,尽量用回厚实笨重的打气筒坐杆。这个开裂的地方受力不大,本身都开口开孔的,也可证明这点。这个地方裂,我估计是坐杆拨得相当高、骑者重量也不小,在杠杆作用下(下压力大、且力臂长、插入深度又不足)导致开裂。 .. (2021-09-08 17:11)
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