Join Date: Jul 2004
Location: Fairfield, OH
Bikes: 2011 Bianchi Infinito, 2010 Surly Long Haul Trucker
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This is a situation where a triple crank can be a real boon. I'm logging my base miles like you were, and while my fitness is improving, I still have a ways to go. There are some neighborhoods I roll through that have some short but steep climbs. In order to stay in my target heart rate (most important to me), I have to sit and spin. On my nice bike with a double crank, this is near impossible. On my commuter with a triple, it is far, far easier for me to pull off.
Don't know the extent of your injury, but I'd be very conscious of whether I were mashing too much or maintaining a good smooth spin.