Ah..Silly me.. When I saw the thread title and first post I thought you had just been competing against the two-wheeled population of Clerkenwell in a gruelling counrywide stage race in which nobody was allowed even a freewheel and rear brake, let alone a gear change.... This event being scheduled to take place in the middle of January, to boot!
I'm kind of relieved (and yes...I admit it.. somewhat disappointed) to find that this event didn't happen, and that you have been tinkering with bits of metal like the rest of us. I hear that 'foot retention' is desirable, and watch out on those U-turns..
proper fixed or suicide?
What's the distinction Tel? (that's a genuine question btw, not a sarcastic remark)