I love and miss Sheldon, but this is the gear calculator I wish that I had designed: http://www.gear-calculator.com/
I’ve never printed a gear chart. I use the calculator to see some things about the gears I’ll get with cassette and rings I’m considering: - Range of gearing. I like ~100” at the top, and ~30” at the bottom for most bikes. That’s about a 1:1 gear, with a 30t cog and a 30t ring with a 700/54 tire. Smaller tires or rims will give you lower gears for the same cog/ring combo. - A ~72” gear around the third or fourth cog spot in the big ring. That’s my main gear, and the chainline should be pretty straight there. - That the gears aren’t redundant between the two chainrings. It’s an OCD thing more than actual, since I’m never going to make three shifts to fine tune a 54” gear to get a somehow more perfect 52” gear. People used to wring maximum gearing out of 2 rings and 5 cogs and the thought of only getting six different gears made them itch. Try out 52/39 and five cogs and see what you get. A good place to start is by setting up the calculator with the gears you have, and think about if you are happy with the gear jumps when you’re riding along at a good clip. And when you buy a new cassette, get a new chain as well. Philip Santa Rosa, CA -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/dfe9e42a-b98e-4203-a747-d6aaa1e4ec33%40googlegroups.com.
