. Cassier's magazine. eans of a hydraulic orother tire setter. In the construction of a drivingwheel for motor vehicles the followingare the principal practical considera-tions, and they may be taken as theconditions necessary to a perfectly sat-isfactory wheel:— i.—It must be capable of carryingthe required load, which, in some to it at a point intermediate to hub andfelloe. 3.—It must be of sufficient diameterand width of tire, the latter particular-ly, to enable it to run over ordinaryroads without cutting them and so ab-sorbing a large amount of power. 4.—The tire must be such, apartfrom w
. Cassier's magazine. eans of a hydraulic orother tire setter. In the construction of a drivingwheel for motor vehicles the followingare the principal practical considera-tions, and they may be taken as theconditions necessary to a perfectly sat-isfactory wheel:— i.—It must be capable of carryingthe required load, which, in some to it at a point intermediate to hub andfelloe. 3.—It must be of sufficient diameterand width of tire, the latter particular-ly, to enable it to run over ordinaryroads without cutting them and so ab-sorbing a large amount of power. 4.—The tire must be such, apartfrom width merely, that it does notdamage the road. 5.—The tire must also be such thatit will not spin or skid under slipperyconditions of paved and greasy roads,or in frost. 6.—The wheel must be sufficientlyresilient to insure for it a reasonablelife without jarring to pieces whenrunning over very hard, unevenground, such as set paved roads. 7.—The wheel should not be un-duly expensive either in cost or main-. F1G. 2. AUTOMOBILE EQUIPPED WITH ROUSSEL ELASTIC SPOKE WHEELS MADE BY MM. CADIGNAN & CIE., PARIS cases, may be as much as five tons perwheel, and with this load it must with-stand the strain of being driven overthe ground at considerable speed. 2.—It must be capable of transmit-ting power through itself, either fromthe hub or from a chain ring secured tenance, though in view of its impor-tance the former is of minor momentcompared with the latter. In the case of pleasure cars and thelightest class of good vehicles, theproblem is much simplified by the pos-sibility of employing solid rubber or 460 CASSIERS MAGAZINE
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