On Tue, Sep 25, 2012 at 1:13 PM, William <tapebu...@gmail.com> wrote: > Your Ultegra cranks won't take a 30. You'll be buying a new crankset to go > to a true compact double. I run compact doubles on three bikes.
The smallest the Ultegra compact double will take is a 34 (well, maybe 33). Like William said, you will need a different crankset. Here's the gospel of Sheldon Brown on smallest chain ring per BCD: http://sheldonbrown.com/cribsheet-bcd.html Search the archives and you should find plenty of information on possible cranksets. You will also need to consider what kind of bottom bracket you have and whether you'll want to replace that too, or find a compatible replacement crank. My doubles include a 42-28, a 36-26 (mostly for dirt), and a 48-30 (road only). Welcome to the world of parts swapping -- that's half the fun. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bunch@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
