a. -24

14

Results of Tests.

Speed ox Car. j Mean Retardation. Acceleration j Total Retardation j Re^ on j \ Elaij-ed T ,, , ! i ,~. i due to Retardation due to Oar- i , *«•«. „( I " rt Pi ByDistanee: <» ' <*£» &£ H *- * "ST I Se0 ° ndS - J fcS bSSf : ,er^ndV P er^nd, 1 per£ond, jper^ ld , i £ »* , Speed of Car. j „ , Total Mean Retardation Retardation Retarding . due to Car- i due | fo resistance: toBrakeB I Brakeg . Sand. a az > Feet • per Cent, per Second 2 . perSe0ond 2. j Car - weight. Remarks. Table 2. Brake-test at Atickland. Dates: No. 13, 26th April,'1910; Nos. 46 and 47, 28th April, 1910. Location: Parnell Rise. Type of brake used: Mechanical track brake. Type of car: Double-bogie single-deck, No. 75. Weight of car (total): 48,888 lb. Description of test: Coasting on track brake ; track brakejapphed hard on signal. 13 u . 7 17 . 2 14.5 178-6 I 1-18 ! 0-83 8-77 3-67 4-50 0-36 4-14 13-0 ! No |Good rail. 46 ii-2 164 12-1 144-7 1-36 0-93 8-77 3-67 4-60 0-36 4-24 ; 13-3 47 io-7 15-7 15-1 178-1 1-04 0-69 8-77 3-67 4-36 0-36 4-00 12-6 j Yes Mean .. ! .. .. I .. I .. I ■ .. I -- ."•• 4-49 .. ! 4-13 12-9 I Table 3. Brake-test at Auckland Date : 26th»April,il910. Location : College Hill. Type of brake used: Mechanical trackf brake. Type of Fear : Double-bogie single-deck, No. 75. Weight [of car (total): 48,888 lb. Description of test: Coasting on track brake ; track brake applied hard on signal. # r 5 9 . 2 13-5 11-4 126-6 1-18 I 0-72 11-74 2-75 3-47 0-36 3-11 9-80 Yes I Eail good. 6 9.7 14.2 12-1 126-4 117 0-797 11-74 2-75 3-547 0-36 3-187 10-00 No j 7 11-2 16-4 114 128-1 1-44 1-05 11-74 2-75 3-80 0-36 3-44 10-80 8 11-7 17-2 10-5 128-3 1-64 1-16 11-74 2-75 3-91 0-36 3-55 11-20 9 13-9 204 13-4 179-5 1-52 1-16 11-74 2-75 3-91 0-36 3-55 11-20 10 !4. 9 21-9 14-6 215-8 1-50 1-34 11-74 2-75 4-09 0-36 3-73 11-75 Mean ! ! •• •• 3 ' TO " ! 343 l 1(>70 Table 4. Brake-test at Auckland. Date: 1st May. 1910. Location: Wellesley Street East. Type of brake used: Mechanical track brake. Type of car : Double bogie single-deck, No. 75. Weight of car (total): 48,888 lb. Description of test: Coasting on track brake ; track brake applied hard on signal. g4 10 . 6 15 . 5 8 . 7 loi-O I 1-78 j 1-19 14-19 2-27 j 346 0-36 3-10 9-72 No Dew on rail. 55 144 20-6 9-5 140-3 2-168 ! 1-512 14-19 2-27 3-782 0-36 3-422 10-80 „ Sanded going up j J . grade. 56 13.1 19-2 9-1 127-3 2-110 1-448 14-19 2-27 3-718 0-36 3-358 10-60 „ Sand still on rail. 57 15 . 9 23-2 9-9 154-1 2-343 1-746 14-19 2-27 4-016 0-36 3-656 11-50 58 19.3 28-2 11-7 225-1 2-410 1-766 14-19 2-27 : 4-036 0-36 3-676 11-60 „ I Mean ! " •• ' ' •• **> ' ' •• ' 1<>TO ' 3-44 10-70