Joined: Jun 2011
Posts: 1,180
Likes: 0
From: Sunnyvale, California
Bikes: Bridgestone RB-1, 600, T700, MB-6 w/ Dirt Drops, MB-Zip, Bianchi Limited, Nashbar Hounder
Look under the BB for a screw hole. Got one? Might have an M6 thread. Get a plastic, under the BB, cable guide for a few bucks. Might fit.
If there is no hole, you may be able to remove crank and BB cups/spindle, drill and tap a hole for that. It would negate the need to use a cable housing segment from the lower down tube to the FD like on your veneral Suntour AR. You would probably still have to route cable above the BB for the RD because your RD cable stop is above the chainstay on this bike. Is that right? If not, then I'm really confused about your bike and may need a picture or set of pics of your BB cable guide braze-ons.