. Report of the Electric Railway Test Commission to the president of the Louisiana Purchase Exposition . in accordance with the con-ditions of the various formulas. The results of the applicationof these formulas are given in Figs. 162, 163, and 164. General Description of the Tests. For the purpose of these tests a section of tangent track wasselected on the Northern division of the Indiana Union Trac-tion Companys system. This track was not quite level, but acareful survey of the grades was made so that corrections couldbe made for the changes in speed and resistance, due to suchgrades. TRAI
. Report of the Electric Railway Test Commission to the president of the Louisiana Purchase Exposition . in accordance with the con-ditions of the various formulas. The results of the applicationof these formulas are given in Figs. 162, 163, and 164. General Description of the Tests. For the purpose of these tests a section of tangent track wasselected on the Northern division of the Indiana Union Trac-tion Companys system. This track was not quite level, but acareful survey of the grades was made so that corrections couldbe made for the changes in speed and resistance, due to suchgrades. TRAIN RESISTANCE TESTS 465 The section of the track selected for the tests was sHghtlyless than five miles in length, and extended from Noblesvillesouthwesterly toward the town of Carmel. The direction of thetrack departed approximately 24 degrees from the east and westHne. The profile is shown in Fig. 171. This track was of themost recent type of construction employed by the Indiana UnionTraction Company. It consisted of 70-pound Tee rails laid on 5000 4500 4000 3500 isooo- S2500 C4 2000 1500 1000 500. 40 50 60 Miles per Hour F!g. 162. — Application of Train Resistance Formulas to Car Louisiana (Results Shown in Pounds Pressure at Various Speeds). standard oak ties. It was gravel ballasted and in first-classcondition at the time the tests were made. Certain rims werealso selected from the data of the service tests described inChapter IV. THE CARS TESTED. The cars selected for test were Car No. 284 of the IndianaUnion Traction Companys system, fully described in Chapter 466 BLECmiC RAILWAY TEST COMMISSION 1, and the special dynamometer car Louisiana, described inChapter XV. The trailer, used in some of the tests on Car , was the one employed in the service tests described inChapter IV, and was equipped and loaded as in those tests. SCHEDULES OF THE TESTS. The tests included in the present chapter comprise a seriesof thirty runs with Car No. 284, and a series of sixty-four r
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