Join Date: Apr 2009
Location: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
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32, 34, 36 and 38 are all very common. Which is best depends on other considerations, including the size of the outer ring and cassette. I like to keep the steps nearer to 10 teeth, so 24/34/44, or 24/34/44 make more sense to me. If I go to a bigger step, it'll be between the middle and inner as in 24/36/46.
The way I prefer to set up the gearing using a 32 middle would limit me to a 42 outer, which is a bit small for long shallow downhills.
But that's just me. Everybody needs to pick chainring sizes and cassettes suited to how and where they ride, and there is no one best way for everybody.
An ounce of diagnosis is worth a pound of cure.
“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin
“One accurate measurement is worth a thousand expert opinions”
- Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance