I am looking to upgrade my bike to something lighter and faster as my present bike feels too clonky. I test rode a single speed round the block and it felt great! However, before I buy I need sound advice on how a single speed will work for my 8.5 mile commute from Hackney to South Ken. Can anyone advise on: start from the lights when you can't drop down gears and then change up hills: pentonville road/margery street/percy the killer circus. Is singlespeed too hard work cycling into head winds Singlespeeds are really cool - but are they really a sensible commuter option for a reasonably fit but not boy-racer fit woman?