Cassette question
My buddy recently bought a compact crankset off eBay. I'm not totally sure why he did so, other than to have something to talk to the boys about. Its a 50/34. He is currently using a 12/25 9-speed rear cassette, to go along with his 50/39/30 triple crank.
We live a fairly hilly/mountainous area. My question is, in your experience is this going to be a good gear combo for him? He is a great sprinter, but is lacking a bit in climbing power. Is the 34-25 combo in his granny gear going to enough to get him up a serious grade, in the range of 18-22%?
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