Читать книгу The Modern Bicycle and Its Accessories - Julius Wilcox - Страница 23

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The field is still contested between the double or inner-tube and the single-tube or hosepipe tire, and at times, leading makers of each have claimed that their class were used on two-thirds, or thereabouts, of all the cycles made in America. The regulation size for full roadsters is 1⅝ inch, in either class; the most popular at present are tires having a serrated or corrugated tread. There are, of course, a great many variations in surface in tires with rough treads, and also of smooth-tread tires. Very few marked novelties in tires are now seen in the market; this is quite in contrast with one and two years ago. Average weights are about 4 lbs. to the pair.