Facts About Rubber Tires.

Facts About Rubber Tires.

“The Automobile” recently sent out a circular to the tire manufacturers, asking 26 different questions. Here are some of the more important of them, together with the answers given by the B. F. Goodrich Company and others. The question, “What is the proportion by weight of rubber in tires?” is answered by the statement that it is 75 per cent. “The proportion by weight of cotton fabric” is given as 25 per cent. “What is the effect of speed rather than weight on tire life?” is answered as follows: “Excessive speed undoubtedly destroys more tires than excessive weight; that is, we believe that continuous high speed is more of a detriment to tire life, than large weights carried at a very low’ speed.” Another manufacturer replies that if the tire is properly inflated it suffers more from speed than from w’eight, but if it is not properly inflated, the weight does rather more injury than the speed. “What is the greatest abuse to which tires are being subjected at the present time,” is unanimously answered by most of the manufacturers as being lack of proper inflation. “What is the effect of grease on floors on tire life?” brings the reply, “Round to rot the tiro.’ I here is a unanimity among manufacturers on that point also. They seem to agree likewise as to the affect of mud and water on tires, namely, that mud and water do not seriously affect the tires, and that they last longer in a moist atmosphere than in a very dry one. Answers to the question, “What is the effect of heat and cold on tire life.’’ show that there is very little difference of opinion in that matter. Meat tends to soften the rubber and is more injurious than cold, except extreme cohl. which hardens the rubber and tends to make it brittle. There seems also to be but one opinion as to the extent of rim cutting, namely, that it is growing less and less, and is no longer a feature of any great importance.

The Fort Smith, Ark., American, in speaking of the fire department trouble at Oklahoma C ity, Ok la., says: “An entirely new fire department may be installed here within a week if the clash between the firemen and city commissioners is not averted. The firemen have organized to resist the examinations provided for in the charter and threaten to quit in a body if the rules are not changed. In case they do not strike they propose to go into court and make resistance there,”

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