Smallest chainring for 157mm BCD?
09-22-07, 09:20 AM
#1
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Smallest chainring for 157mm BCD?
I have a 3-arm crank (101mm BCD I believe). It has 2 steel chainrings that are riveted together and these chainrings are the common setup. Simplex made an adaptor so you can screw together 2, 6-hole patterned chainrings for "custom" setups (see picture below). This adapter is for a 157mm BCD chainring. I have seen 46 teeth chainrings that will fit on this but is there anything smaller? I've seen smaller TA 6-hole rings but I just found out they are a 152mm BCD.
09-22-07, 11:10 AM
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feros ferio
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Bikes: 1959 Capo Modell Campagnolo; 1960 Capo Sieger (2); 1962 Carlton Franco Suisse; 1970 Peugeot UO-8; 1982 Bianchi Campione d'Italia; 1988 Schwinn Project KOM-10;
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I have aluminum 6-bolt 45, 46, 47, and 49T rings with 157mm BCDs. [I also have a 58T, for anyone who wants it for the $5 cost of shipping.] Looking at my 45T ring, I would guess 44T to be the minimum size, but I have never seen one.
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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
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
"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
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
