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Old 06-13-13, 06:15 AM
John E
feros ferio
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Join Date: Jul 2000
Posts: 19,337

Bikes: 1959 & 1960 Capo; 1982 Bianchi; 1988 Schwinn KOM-10;

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Some of you might like the custom 3x8 1.5-step + granny gearset I put on my mountain bike: 48-40-28/12-13-15-17-19-21-24-28. For steeper hills, I can swap in a 24T granny ring, as long as I am careful with the 24-40 upshifts, and my SunTour rear derailleur can easily handle a larger granny cog, if necessary.

Barrettscv has the right idea -- roll your own, as I have done with bicycle gearing systems since my college days. Back in the days of 2x5, 3x5, and rare 2x6 configurations, the big challenge was avoiding redundant ratios and covering just the range you really needed, to avoid large gaps in the ratiometric progression. With a 3x10 system, one can afford the luxury of a few redundancies and perhaps a rarely used overdrive and/or bail-out granny.
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324
Capo: 1960 Sieger (2), S/N 42624, 42597
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069

Last edited by John E; 06-13-13 at 06:19 AM.
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