Too steep for a fixie/ss?

I'm currently on a Specialised Tricross running a 70ish GI. Brimble Hill is a bit of a hassle near the top although I do come at it from the back route passed the Brown Jockey. A 67 should be more confortable for the daily slog and still allow a decent speed on the flats. If you're planning on riding out around the area on fixed or ss then I wouldn't advise going above 70 unless you're pretty tough, experienced and determined.

Are you working at Halcrow?

Well the langster comes with 42/16T, with 69GI, might be a bit tough. How much are cogs? Getting a 41T would bring the GI to 67.3, would that make much difference?

Yeah, I do! You too?