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@christofk
Hi, I have a question about my road bike : switching to a compact crank and drivetrain compatibility.
• I have a 9-speed Chorus setup with a 53-39 crankset (circa 2000), with a square taper on a Campagnolo BB. I'd like to put a compact 50/34 crankset (because it's hilly around here, and I want to try to climb Mont Ventoux later in the year).
• The BB does not seem to be an issue, as most new BB (UltraTorque/MegaExo/Octalink etc...), except newer BB30 can be put on my frame (A 2005 Bianchi l'Una carbon frame). Is that right ?
• Now the gears compatibility. Will a current Athen 11-speed crankset such as this one be compatible with the older Chorus 9-speed cassette and shifters ? If yes, what chain sould I put (9/10/11 speed) ? Would it be safer to use a lower-end 10-speed current crank from Campagnolo (such as Veloce) ?
• Alternatively, will a "Shimano-compatible" FSA crankset worjk with Chorus 9-speed ? There are "Shimano" 9-speed (S-9) and 10-speed (S-10) LSK carbon models available for quite cheap (here and here). The "S-9" is also labeled "C-10" on the chainring, so I guess it is for Shimano 9-speed and Campagnolo 10-speed. What about Campagnolo 9-speed ? Will it be compatible ?
Thanks for your help !