Originally Posted by
dksix
...The other option would be to cross the cables inside the down tube but I don't think that would be a good idea because the cable would rub each other where they cross and that would surely lead to frayed cables and eventual failure.
The rubbing at the crossover is mentioned in the Park Tool page. It's really minimal, and won't fray the cables. You need to change at least the front shift cable periodically, anyway. (they tend to break from flexing at the curve within the shifter body)
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How do you fish the cables inside the downtube? I wrote up a method using some temporary thin tubing in
this post.
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Inline adjusters
These adjusters allow shift tension adjustments by turning the adjuster. You could get an inline adjuster, or perhaps there's one that would fit onto the hole at the head tube.
The rear derailleur has an adjuster built in, but a second at the front of the bike is convenient. And the front derailleur doesn't have one, so an adjuster at the front would make it way easier to set the front shifting correctly.
Jagwire instructions
