dang. my first commute to work. it's only five miles each way--up from the bottom of Manayunk and through Wissahickon park to Chestnut Hill (outskirts of Philadelphia)--but what a five miles! on the way to work I have to crank uphill 90% of the way, and these hills are absolute knee-busters on my single speed. the ride home is mostly downhill, but cranking up out of the park is gnarly. I changed the gearing to 42/17, but this is not adequate. I'm thinking that maybe I'll have to put some gears on the old donkey if I'm going to bike to work, which means I'll have to pick up a frame to put the fixed gear parts on ('cause I love riding around town on the fixed). I'm beat, gosh darn it!