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Brake tests for a 19-EX vehicle, detailing cold measurements, stopping distances, and brake component specifications.


Identifier  ExFiles\Box 12\5\  05-page309
Date  20th October 1931
  
RM {William Robotham - Chief Engineer}
87360
BRAKE TESTS. 19-EX.
20.10.31

Cold measurements -
Foot Pedal 5¼" Rear Arm both โ…ž"
Front toggles โ…" O.S. ½" N.S.

12 brakes 70 - 10.
10 miles 40 - 10 every ¼ mile.
12 brakes 70 - 10.
10 miles 40 - 10 every ¼ mile.

5 studs found to be missing from N.S. front drum.

Stopping distance from -
30 m.p.h. ..... 25 ft.
70 m.p.h. ..... 214 ft.
60 m.p.h. ..... 156 ft.
50 m.p.h. ..... 118 ft.
40 m.p.h. ..... 60 ft.
30 m.p.h. ..... 25 ft.
20 m.p.h. ..... 9 ft.

12 brakes 70 - 10
10 miles 40 - 10 every ¼ mile.
12 brakes 70 - 10.
10 miles 40 - 10 every ¼ mile.

119 miles.

Front Brakes.
O.S. Lake & Elliott Cast Iron Brake Drum Linings G.79542.
N.S. RR. Cast Iron Brake Drum Linings G.79542.
Auxiliary Brake Shoes G.79445.
Ferodo Bonded Asbestos ¼" thick.

Rear Brakes.
G.79502 Rear Brake Drums produced in Lake & Elliott's Nickel Chrome Cast Iron., fitted with Anti-squeak Type Brakes to Sch.1433.
Ferodo Bonded Asbestos ¼" thick.

HS {Lord Ernest Hives - Chair} /GWH. {George W. Hancock - Head Chateauroux}
  
  
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).


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