Originally Posted by
mudmucker
But the type of hills I have are mostly abrupt acute steep up and downs that follow each other like a camel with 7 humps. They are fairly short, about 1/2 to 2 miles each, anywhere between 6-12% grades. As soon as you are done with one, the next one is so close that there's maybe only a 1/4 mile between, to the next one. Some of the grade changes so I shift slightly while on the same chain ring, but if I want to maximize the downhill then I'm really shifting up 2 chainrings and then maybe another within the ring to fine tune it. Yes, I can map it out and I've gotten quite expedient at shifting minimally, but sometimes I still feel as if I'm shifting till the cows come home. There are points with terrain like this where I just don't shift after the hill anymore because I get tired of it - I coast down in the gear I already know I'm going to need for the next hill. So I have maybe 20 seconds of coasting. I think I would love a double. I would lose my lowest gear if I switched.
If the hills were of a different nature, with longer distances between hills, or a greater than 6-7% really long sustained climb, then you can rest comfortably in the small ring for a time, and use the middle or outer ring for lesser grades and not be shifting so much.
What kind of hills do you have and does any of that make sense? Some people can do better on acute hills and not so good on lower grade sustained climbs. What do you do better at?