Quote:
Originally Posted by intakexhaust
Anyhow, could play with the following:
according the IGH booklet, L is 25% lower then N (assume 1:1) and H is 30% higher.
The three cogset is 15 - 20 - 25T
Chainrings are 46 and 52T
Not so sure with the above would meet your low but should achieve it on the high. Curious how drastic it would be in comparison with a 20-24-28 cogset.
misc.- crank length 165mm. Todays bikes are going short like this but I still prefer the 170 or 172.5
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Playing w/ this calculator
Sheldon Brown's Bicycle Gear Calculator
The setup above gives an okay low, not high enough, large steps if staying in the same IGH gear, if I memorized the whole shift pattern in theory steps could be 7-11%.