Join Date: Jul 2000
Bikes: 1959 Capo; 1980 Peugeot PKN-10; 1981 Bianchi; 1988 Schwinn KOM-10;
Mentioned: 10 Post(s)
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Half-link: Chains normally comprise alternating inside (skinny) and outside (wide) sections. Each section is precisely 1/2 inch long. This system restricts chain lengths to integer numbers of inches, i.e., an even number of sections, such as 116. A half-link, skinny at one end and fat at the other, allows one to build a chain that is an odd number of sections long, e.g. 115.
You may be able to salvage/straighten your current rear derailleur and hanger to permit its cage to serve as a "zero budget" chain tensioner.
"Early to bed, early to rise. Work like hell, and advertise." -- George Stahlman
Capo [dschaw'-poe]: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger, S/N 42624
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1981 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069