I have a Windsor "Hour" - I am running 48x19 -I live in Nor Cal in the Central Valley -flat but VERY windy - I find 68 to 70 gear inches fine for most aplications. Once you get used to " spinning a bit" it is just fine for short hills and good for running down the road @ 18 mph or so. When head winds exceed 15 - 20 mph you will destroy your joints,(knees), by pushing too big a gear. It is not much fun either.