If you're going down to a 34t front, do you need a 27? Why not 12-25 or 12-26 Sram make a 12-15 with pretty straight block. Or are you carrying huge weight.
I'm going up the grand union canal to birmingham and back down the country via the oxford and basingstoke canals, so won't be a perfect tarmac surface and will be carrying a light tent and gear for 2-3 week adventure with the occasional restocking on the way.
Had thought about the SRAM 12-26t, but as this'll be my first bit of touring(?), so kinda trying to cover all bases!
I'm going up the grand union canal to birmingham and back down the country via the oxford and basingstoke canals, so won't be a perfect tarmac surface and will be carrying a light tent and gear for 2-3 week adventure with the occasional restocking on the way.
Had thought about the SRAM 12-26t, but as this'll be my first bit of touring(?), so kinda trying to cover all bases!