index/friction cable

Is there any difference in the inner cable used in friction vs. indexed
shifting?


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meb

meb wrote:
Is there any difference in the inner cable used in friction vs. indexed
shifting?


--
meb

No..but that means you can use an index inner wire on friction. Cannot
use a crappy friction inner wire on index.

someone writes:

Is there any difference in the inner cable used in friction
vs. indexed shifting?

http://www.sheldonbrown.com/brandt/sis-cable.html

Shift and brake cable failure usually occurs when one strand of the
cable is worn about half way through. The reason for this is that
being helically wound, all strands pass the same friction spot as the
"one" as they pass through the inside of a bend, the place where the
cable rubs in its curved path, so they are ALL worn half way through.
The cause of local wear is generally a sharp bend in the housing.
That sharp bend flexes the cable as it moves lengthwise under load and
causes fatigue cracking in the strands as they wear asymmetrically,
becoming half round in cross section.

Super flex cables are made of stranded strands and the same rule holds
for them, except that their strands are less than 1/6 as thick as
conventional cable and therefore wear half way through proportionally
faster. This first came my attention when Campagnolo introduced bar
end shifters that use super flex cable. Although shift cables are not
as heavily loaded as brake cables, they fail relatively more often
because even conventional ones have smaller strands.

Jobst Brandt

On Sun, 6 Nov 2005 00:40:57 +1100, meb
wrote:


Is there any difference in the inner cable used in friction vs. indexed
shifting?

No.
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Typoes are a feature, not a bug.
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