| 摘要 |
A suspension unit comprising a telescopic damper with a surrounding coil spring has a rotatable cam sleeve, an intermediate sleeve and a fixed end sleeve, the latter two sleeves being adjustable relative to each other both angularly and axially, but normally providing a fixed reaction for normal adjustment of the spring length by rotation of the cam sleeve, which may be of identical form to the intermediate sleeve, each having an axial cam profile at one end and axially extending projections of different lengths at its other end.
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