Leo Lichtman said:
"Tom Weaver" (clip) Why do the front and rear shifters work opposite to
each other? (clip)
^^^^^^^^^^^^^^
A couple of others have mentioned possible confusion regarding which rings
and cogs are closest to the frame, so I will leave that alone. I would like
to answer the question I have clipped from your post. Front and rear
shifters work opposite, in the sense that the motion on the rear shifter
that gears you down does the opposite on the front shifter. This is because
going to a larger sprocket, front or rear requires more force than dropping
to a smaller one. For this reason, shifting "larger" is always done with
cable tension, and going the other way is done by creating cable slack,
allowing a spring to do the work. Following this rule, you downshift in the
rear with tension, and upshift in the front with tension. It's the SAME in
terms of the mechanism, and OPPOSITE in therms of effect.
Except with low-normal rear ders, of which I have two now. They work
just fine, thank you, and they make shifting *far* more intuitive.
--
Typoes are a feature, not a bug.
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