18

H. -24

Results of Tests— continued.

Speed of Car. j No. of I : Miles per | Feet per Hour. Second. Elapsed Time : Second;-. Mean Retardation. 1 Length of Stop: Feet. I By Time : |By Distance: Feet per j Feet per I Second-. ' Second 2 . Grade, 1 in m . i *■ Total Mean J Acceleration Total Retardation Retardation | Retard ingdue to i Retardation | due to Car- due force o{ Gravity: | of Car: ] resistance: to Brakes . j Brakes: i bancL Feet Feet | Feet Feet Cent _ | per Second 2 . ! per Second 2 . : per Second-. per gecond ;s, ' Car-weight, j Remarks. Table 13. Brake-test at Auckland. Date: 1st May, 1910. Location: Wellesley Street East. Type of brake used: Pneumatic wheel and mechanical track deck, So. 75. Weight of car (total): 48,888 lb. Description of test: Coasting on track brake ; emergency air applied on signal, and ti 78 I 12-5 I 18-3 3-9 57-7 i 4-692 2-900 14-19 ! 2-27 j 5-17 i. 0-36 4-81 I 79 14-2 20-8 4-8 72-0 4-330 3-004 14-19 2-27 5-27 0-36 4-91 80 16-8 24-6 5-5 97-6 4-472 3-100 14-19 2-27 5-37 0-36 5-01 81 17-3 25-3 5-7 98-0 4-438 3-270 14-19 2-27 5-47 0-36 5-11 83 23-6 34-5 7-5 189-2 4-600 3-145 14-19 2-27 5-41 0-36 5-05 84 22-0 32-3 7-3 160-2 4-424 3-256 14-19 2-27 5-83 - | 0-36 5-47 85 19-9 29-2 7-1 146-3 4-112 2-914 14-19 2-27 5-18 0-36 4-82 Mean ! .. .. \ \ .. .. | .. •• •• •• ! 5-39 \ . -• I 5-03 brakes. Type of car : Double-bogie single■ack brake put down harder. 15-10 No J Kail good. 15-20 15-70 „ I 16-00 „ I 15-80 17-10 , Eear free wh.ee) skidded nearly 1 chain. 15-15 „ I Ditto. ! f I I 15-62 Table 14. Double combination, 'No. 9. Weight oi ca Brake-test at Christchurch. Date: 11th May, 1910. Location: Moorhouse Avenue. Type of brake used: Pneumatic wheel. Type of car: (total): 42,714 lb. Description of test: Emergency. 1 16-30 23-80 4-6 75-50 5-1S i 3-750 2,200 - -0146 I 3-735 0-32 3-415 2 14-50 21-25 3-6 48-67 5-90 4-630 2,200 - -0146 : 4-615 0-32 4-295 3 10-50 15-40 3-0 28-00 5-13 4-125 2.200 - -0146 ; 4-110 0-32 3-790 4 10-25 15-00 2-8 28-67 5-35 3-930 2,200 - -0146 ' 3-915 0-32 3-595 5 7-25 10-61 2-4 16-42 4-42 3-430 2,200 - -0146 , 3-415 0-32 3-095 ■6 7-50 11-00 2-2 18-17 5-00 3-330 2,200 | - -0146 3-315 0-32 2-995 7 17-60 25-75 5-0 80-50 5-15 4-125 2,200 - -0146 4-110 0-32 3-790 8 i 17-80 26-15 4-8 82-00 5-44 4-175 2,200 - -0146 4-160 0-32 3-840 9 19-30 28-25 5-8 100-67 4-87 3-970 2,200 | - -0146 3-955 0-32 3-635 10 I 19-10 28-00 5-6 100-00 5-00 3-920 2.200 - -0146 3-905 0-32 3-585 11 20-08 29-37 6-0 103-00 4-89 4-190 2.200 - -0146 4-175 0-32 3-855 12 20-08 29-37 5-6 99-50 5-24 4-350 2,200 - -0146 4-335 0-32 4-015 13 20-80 30-50 6-4 113-50 4-76 4-100 2,200 - -0146 4-085 .0-32 3-765 14 20-80 30-50 6-0 110-50 5-10 4-210 2,200 - -0146 4-195 0-32 3-875 15 21-78 31-90 6-6 128-50 4-83 3-970 2.200 -| - -0146 j 3-955 0-32 3-635 16 22-00 32-25 6-6 129-50 4-88 4-020 2,200 - -0146 4-000 0-32 | 3-680 17 22-80 33-50 7-8 155-50 4-30 3-610 2.200 - -0146 j 3-595 0-32 j 3-275 18 I 22-90 33-60 7-4 144-00 4-54 3-925 2,200 - -0146 j 3-910 0-32 3-590 Mean I .. . J .. .. " ' 3-960 - 3 - 7()0 10-60 I Yes j Bail wet and mill 1 13-30 „ 11-80 11-20 9-61 9-30 „ 11-80 11-90 11-30 11-10 12-00 12-40 11-70 12-00 11-30 14-40 10-15 No i 11-15 „ 11-33