From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Blueprint detailing modifications to a braking system, with associated calculations, distribution table, and performance graphs.
Identifier | ExFiles\Box 5\3\ 03-page156 | |
Date | 11th June 1925 guessed | |
Top Left Section: INDIA MS4/LG 20525 AS MODIFIED BY N.Sch 2005 & DAI/M9625 Diagram Labels: DRUM DIA 13, CAM, DRUM DIA 14, .43 CAM DIRECT REAR BRAKING: (13 / 4.25) x (1.187 / 1.350) x (2.000 / 3.150) x (6 / 2.3) x (2.5 / 4.3) x 1.4 P = 355 P. SERVO REAR BRAKING: (5.12 / 4.38) x (1.187 / 1.350) x (1.850 / 1.750) x (4.875 / 3.000) x (2.150 / 3.150) x 213P = 249 S.P. SERVO FRONT BRAKING: (5.12 / 4.35) x (1.187 / 1.350) x (1.850 / 1.750) x (4.875 / 3.00) x (2.15 / 2) x 145P = 266 S.P. Table: DISTRIBUTION FOR VARIOUS SERVO EFFICIENCIES Table Headers: SERVO TORQUE MULTIPLR, FOOT RATIO TO REAR, SERVO TO REAR, TOTAL TO REAR, SERVO TO FRONT, TOTAL BRAKING, % BRAKING FRONT, % BRAKING REAR Row 1: 0, 355 P, 0, 355, 0, 355, 0, 100% Row 2: .25, 355, 62.2, 417, 66.5, 483, 13.7, 86.3 Row 3: .5, 355, 124, 479, 133, 612, 21.6, 78.4 Row 4: .75, 355, 187, 542, 199, 741, 26.8, 73.2 Row 5: 1, 355, 249, 604, 266, 870, 30.6, 69.4 Row 6: 2, 355, 498, 853, 532, 1385, 38.5, 61.5 Row 7: 3, 355, 747, 1102, 798, 1900, 42, 58 Row 8: 4, 355, 996, 1351, 1064, 2415, 44, 56 Right Section (Graph): INDIA ORIGINAL BRAKE LEVERS AS IN MS4/LG20525. ALTERED AS PER N.Sch 2005 & DAI/M9625 Y-Axis (Left): CONVENTIONAL BRAKING UNITS Y-Axis (Right): % BRAKING X-Axis: SERVO TORQUE MULTIPLR UNITS Graph Lines: TOTAL BRAKING, % REAR BRAKING, TOTAL REAR BRAKING, TOTAL FRONT BRAKING, % FRONT BRAKING, SERVO TO FRONT, SERVO TO REAR. | ||