Crossing the right/rear over to the left side makes the cable housing loop around the outside of the head tube, minimizing rub on the paint. It makes for a longer housing but with a wider radius curve. You can usually cross the cable back over pretty easily, either on the downtube for traditional shift mount points, or behind the seat cluster for a bike with top tube routing.
I recently built up a gravel bike for my girlfriend out of a late 90s Univega Alpina 504 (DB CroMo frame, Deore LX group, top tube cable routing). I ran bar-end shifters on Nitto RM-14 dirt drops, and crossed the housing to minimize rub. The right/rear goes to the left side of the top tube, runs all the way on the left side, and crosses over behind.below the seat tube cluster, and continues down the right seat stay to the rear derailer. The left/front crosses over to the right side of the top tube, and transitions from the right side to the top-center for the top-pull derailer. Sorry, no pics yet. No problem with that top pull FD, a late 90s Deore LX. Tim On Wed, Sep 17, 2014 at 9:55 PM, ted <ted.ke...@comcast.net> wrote: > I have ben experimenting with running shift cables on my top tube. Seems > to me the right / rear shifter should go on the right side of the top tube > so it runs onto the right seat stay and down to the rd cleanly. Why do you > chose to take the right shifter cable to the left side of the top tube? > > While on the topic of routing shift cable up top, any opinions on top pull > fd's? > > > On Wednesday, September 17, 2014 7:44:53 PM UTC-7, Philip Williamson wrote: >> >> I've had two mountain bikes with derailleur cables running over the top >> tube. I like it. My Singular with full derailleur housing down the down >> tube bugged me so much I made the bike a singlespeed. I second the idea of >> asking for normal cable stops. Right shifter cable crosses the head tube, >> and goes onto the left side of the top tube. >> >> Philip >> www.biketinker.com >> > -- > You received this message because you are subscribed to the Google Groups > "RBW Owners Bunch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to rbw-owners-bunch+unsubscr...@googlegroups.com. > To post to this group, send email to rbw-owners-bunch@googlegroups.com. > Visit this group at http://groups.google.com/group/rbw-owners-bunch. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
