Originally Posted by
Ex Pres
Too go with leecycle's post above, you'll find you'll need a triple FD if you use more "equally" spaced chainrings. Double FD will work better [as a and] on triples if they are in a half-step+granny setup (like a 52/44/28). Or at least that seems to be the case with Suntours I've done this to.
That is consistent w/ what I have always read. It has to do with the profile of the inner cage wall.
I continued to use the original road double front derailleur on my PKN-10 when I switched from the stock 52-42 to 48-45-34. I changed that to 52-48-34 for my son, but he made me replace the 48 with my 45, which still seemed to work fine.
The secret to accommodating small inner chainrings is to make your outer chainrings as small as practicable.
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"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; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
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Schwinn: 1988 Project KOM-10, S/N F804069