Originally Posted by
Fear&Trembling
56t on standard Birdy single ring/derailleur set ups. I found that pared with an 11t -32t cassette I was undergeared. I opted fora a bigger chainring as it was cheaper than a Capreo hub/cassette wheel build.
I installed a 58T chainring for a small improvement. I can pedal up to 40km/h with reasonable comfort. Since the Birdy is my commuting/touring bike, that's adequate.