价格对比
M520: 200左右
M540: 300左右
抄的评论:
The difference is that the 520 has a protected spindle, the 540 is
naked, therefore lighter & more sexy looking. the bearings are supposed
to be better in the 540 too, but i can't tell a difference in smoothness
by hand turning them.
Getting back to the naked spindle, theoretically, if that gets damaged,
it can initiate fatigue whereas the covered one is less likely to have
that happen. example; a friend has the 959's with naked spindle. he's
somehow managed to gouge the chrome plating off a part of one spindle,
and the corrosion that's taking hold is a /real/ spectacle. a stress
riser, corrosion & cyclic loading. mmm, that failure is going to be
text book.作者: lgs520yxx 时间: 2008-12-11 12:36
我用540