650b conversion BB height?
i am thinking of doing a 650b conversion on my road bike for touring. i have checked everything out and it looks like everything should be fine (ie tire clearance, brake reach, etc) except the bottom bracket height. my frame, while running 700 x 23c tires has a BB height of 267mm, which i believe is the old standard for racing. i have read that running 650 x 38b tires will reduce the BB height 8 to 10mm. will this be too low for a 170mm crankset? has anyone done a 650b conversion on a racing bike or anything with a similar BB height? Thanks....