I’m no Brompton expert, but I’ve recently completed 5k London kilometres on mine, including expeditions to the Epping hills and whatnot, and if I was buying again I’d go wide-range three-speed with a slightly bigger than standard chainring—the derailleur is bobbins. And fine-tuning ratios, which is all that gadget is really good for, isn’t worth the bother.
sbbohr
TM
I’m no Brompton expert, but I’ve recently completed 5k London kilometres on mine, including expeditions to the Epping hills and whatnot, and if I was buying again I’d go wide-range three-speed with a slightly bigger than standard chainring—the derailleur is bobbins. And fine-tuning ratios, which is all that gadget is really good for, isn’t worth the bother.