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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).
Procedure for measuring oil flow through the bearings on a Phantom engine.

Identifier  ExFiles\Box 72\1\  scan0123
Date  27th April 1926
  
X8980
To Hm.{Capt. W. Hallam - Head Repairs} from Hs{Lord Ernest Hives - Chair}/ACL.
Hs{Lord Ernest Hives - Chair}/ACL1/LG27.4.26.

MEASUREMENT OF OIL FLOW THROUGH BEARINGS ON PHANTOM. X8980 X8090

The apparatus is connected up as shown in the sketch.
This means that the following parts are required :-
(1) Special pump having long suction pipe.
(2) Special relief valve with long drain pipe.
(3) Cover for sump with large diameter outlet pipe.

The method of operation is as follows :-

1. Run the engine with the apparatus as shown in fig.1. until the oil has warmed up to approx. 60°C. The temperature can be taken by means of a Cambridge thermometer in the main oil tank. See that the oil pressure is about the same as previously noted on car.

2. Slide the tanks across so that the measuring, or collecting tank receives the flow from the large diameter pipe in sump cover. Immediately oil starts to flow into this tank, start a stop watch. Let the tanks remain in this position (fig.2.) for one or two minutes - if the flow is small the longer period is to be preferred.

At the end of the time the tanks should be returned to the position shown in fig.1. The amount of oil collected should then be measured.

Oil flow to the gears and rockers must be stopped for the test. The tests should be run at speeds of 1000 and 1500 r.p.m. With hand scraped bearings we obtain the following results :-

contd :-
  
  


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