Granny Gears
Gina is at the vets overnight, she was a bit scared, but I’m having some granny gears put on, and don’t have the obscure tool to do it in my cavernous bike tool box!
I’ve got a feeling I’ll need something a bit easier than 30/21, the freehub seems to be designed for a hardcore London TT’er: 14-15-16-18-19-21, I’m getting the shop to fit a 14-28 freehub.
Those extra 7 teeth will help lots apparantly. Sheldon Brown’s fantastical gear ratio calculator says that my current easiest gear (30/21) has a gain ratio of 2.9, whereas the new 30/28 granny gear has a gain ratio of 2.2. These ratios and numbers mean very little to me but when I figure it out in percentages, it starts to excite me – the new gear is almost 25% easier!
Let’s hope the 25% isn’t completely wiped out by my estimated 40kg of kit…
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