FWIW I have now finished my first proper year with the Flyer, so thank you to those who have contributed to this thread. I rode 46/16 most of the time, which is 77" and managed to get round The Lincoln (400km) audax and the Mersey Rds 24 using that gear, plus a load of short TTs, a discipline I had never tried before. I've just about managed to adjust the brakes enough to get the 15T cog on the back but it's a bit close for comfort and I'll probably move to having two chains of different length, so I can still use the 18T freewheel for pootling around on holiday etc.