Re: Gear ratios for HF bike -- please help!
Just playing with the calc. 12T/30T, 10T/40T to 26T/30T works out to 11.54:1 and 33 MPH at 5,000 RPM. (RPM really depends on the weather but that is what mine does when happy and weather permitting. most days just a tad less)
Am just playing around. I forgot you said you lived in a hilly area. HFs are not fun to pedal. Really wide.