Merak, I'm in Glasgow too, so listen to me instead of these bloody Cockneys who ride about on roads designed with a spirit level. Fixed wheel is probably so popular in London cos there are no hills to coast down anyway. :-P
I'm on 41:16 - which isn't a million miles away from what you're using - and that ratio seems just about right to me. You may spin out often, but at least you won't have to plan your route to accommodate the gear.
There are hills here that would be unmanageable on a bigger ratio. I can think of plenty of traffic lights in the town centre where, on longer gear inches, I wouldn't be able to get the bike moving from a standing start.
I suppose you should consider the wind too, especially if you cycle alongside the Clyde for any sort of distance. It's brutal down there. How did you get on in Friday's gusts? It can be like that for weeks during winter and you REALLY notice it when you don't have the option of shifting down a gear.
By all means, try what the other guys say and use a 15-tooth cog for a while. Just don't go totally daft and swap to some sort of Obree-esque macho monster gear, cos I think you're pretty close to the ideal right now. Of course, it's down to personal preference, riding style and where you're likely to be cycling too, and you'll know much more about that than me.
Just out of interest, what are you riding? I'll keep my eyes peeled for you.
Your talking sense there.
I dont really have major problems with the 42-16 i like it when its rolling but I agree with you, the inclines in and around the city are 'difficult' I do my best to avoid them!
I just find Im spinning out for example riding down Queen Margaret drive legs are a blur! But by the same token if Im tired I struggle away from the lights. What you say about being close to the right gear, I would agree with that.
I think I will try the 15 at the back. Incidentally I do travel along the Clydeside yesterday was savage in the wind, today is not much better but at leat the suns out!
I ride a Langster green with red tyres.
Thanks for your advice.