I have an older miyata with stem shifters, a boss on the downtube to fit the cable housing, and a boss on TOP of the right chainstay to fit the RD end loop.
However! There's no plastic guide under the bottom bracket (obviously because the next housing stop is on TOP of the chainstay) and there's no brazed on, half-moon type guide above the bottom bracket - nor is there a pulley or anything.
Any ideas here? I'm not opposed to drilling the bottom bracket for a plastic cable stop, but then I'd have to deal with the boss on the chainstay.
Recommendations? I tried using a long piece of housing to route the cable over the bb and toward the chain stay, but it bends like a SOB and just doesn't seem quite right when shifting. Plus it requires zipties and looks pretty stupid.
Thanks for any help