yeah, i realize the Sturmey-Archer is pretty weird, with the direct drive as the lowest gear, but i've already bought it. plus, it's significantly ($60-$80 including the shifter) less expensive than the Shimano. They compensate somewhat by supplying a rather large cog (25T) and i'm going to be using a fairly small chainring (34T). This will give a low gear of ~36 inches, which i am hoping will be low enough for my mom, and a high gear of ~108 inches, which i suspect will be useless. Oh well. If it turns out that these gears are too high, i guess i'll have to go down to a MTB crank with a smaller BCD than 110mm.