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@TM
Been riding Hilly Leeds on 52x18 past few months, works out about 80GI i think.
hard work on the ups but great for rolling/flatish/downhills.
Just trying to figure out, I had been doing my 18 mile commute on the fixed, switched to my geared bike past few days thinking I'd shave 10 minutes off easy. Came in exactly the same time (an hour 20, not fast i know)
Must try harder.