Re: Lower than a 36 tooth
A few years ago I had a 12 mile (each way) commute and used a Schwinn Alloy Seven with 66cc and 34T gear. I set up the pedal side with 52Tf and 11t rear and it would do 30+ nicely. I put 3k miles on it before the frame fractured.
I had no problems with acceleration, wind or not, because I usually pedalled. With smart shifting, that bike accelerated very well despite my 220lbs/100KG weight, often beating cars across the intersection to take lane position.