. The Street railway journal . ual size) of the tire, the rim and a portion ofone of the spokes of the same wheel. The weight of thiswheel, which may be considered typical of European wheelpractice, is about 170 kg (374 lbs.), of which the tireweighs 100 kg and the hubs, spokes and rim, 70 kg. Thediameter of this particular wheel is 762 mm at the threadand 797 mm at the flange. When a tire develops a flatspot it is turned down on a lathe and the thickness of thetire is usually sufficient to allow of its being turned downtwice. A new tire can then be put on the wheel, whichis clone by the usual
. The Street railway journal . ual size) of the tire, the rim and a portion ofone of the spokes of the same wheel. The weight of thiswheel, which may be considered typical of European wheelpractice, is about 170 kg (374 lbs.), of which the tireweighs 100 kg and the hubs, spokes and rim, 70 kg. Thediameter of this particular wheel is 762 mm at the threadand 797 mm at the flange. When a tire develops a flatspot it is turned down on a lathe and the thickness of thetire is usually sufficient to allow of its being turned downtwice. A new tire can then be put on the wheel, whichis clone by the usual process of shrinking it on. The cost of a complete wheel with new tire varies ac-cording to local conditions. In Brussels it is 104 francs($), while the cost of a tire by itself is about 35 this, of course, must be added the cost of taking theaxle out of the car, pressing off the wheel, heating the oldtire so as to slip it off, and shrinking on the new cost of turning- down the tire, which is done on a. Street Railway Journal FIG. BRUSSELS WHEEL (THREE QUARTER SIZE) lathe, is about 3 francs, not including the time and laborof taking the wheel out of the car. The wheel question in Europe is complicated very muchby the narrow grooves used in the rails, and it has beenclaimed by many of the European managers that a cast-iron wheel cannot be used in these rails, as the flanges chipbadly. As a rule, the flanges to fit these grooves have tobe even smaller than in the wheel shown in Fig. 2, whoseflange is only 2s mm (f in.) wide at the throat and 16 mm(# of an in.) dee]). I hits the Compagnie Parisienne deTramways uses a wheel with a flange only 13 nun x 13mm. Originally, this company employed a much largerflange, viz., one 20 mm x 20 mm, but with the low speedsused, the smaller flange has given no trouble from derail-ment. The rails used on this line have a groove 28 mm x 28 mm. In Hamburg, where the groove in the rail is 32mm x 32 mm, the wheel f
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
