Originally Posted by
urbanknight
Everybody has their own preferred range of gearing for various gradients and conditions. I suggest you play around with the Sheldon Brown gear calculator and input the gearing you plan on running, and decide if they keep you in your preferred cadence range. Even with some decent climbing, I have been playing around with getting a 1x for a back-up bike with a 42 up front and a nice wide 11-42 in the back, but that's if I decide to put up with a range of about 80-100 RPM.
You'll get better results if you do a google search specifying bikeforums.net as the domain.
I've been looking at the Bikecalc, so have a general idea where I need to be.