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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).
Experimental run report on Chassis 1714, evaluating the performance of the axle, gears, clutch, and flywheel.

Identifier  ExFiles\Box 20\11\  Scan014
Date  24th June 1912
  
TBB5/L24612.
X180
June 24th. 1912.

Experimental run on Chassis 1714
June 16th.1912.
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Axle - 18/52 with long addenda gears.

This axle was an excellent one and quite the best I have had experience of, and to all intents and purposes was noiseless. The power with this gear was fairly good although it did not give one a good impression at first. The petrol consumption, which I understand was 15 miles per gallon, is not particularly good for so high a gear.

Helical Timing Gears.

These were excellent and appeared to have no rattles.

Cotton Belting Cone Clutch 3/16"

This worked very well and did not give any trouble from clinging (the driver made one complaint when changing down but I do not think this is/a valid one as the clinging of the clutch should not affect the change-down operation)

Small flywheel and spring coupling.

My impression of this car with these fitted was that it was certainly not so good as when I have tried the car with the heavy flywheel. There is a very bad

X630
  
  


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