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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).
Letter from Leyland Motors discussing collaborative testing of gearboxes, brakes, engines, and materials.

Identifier  ExFiles\Box 140\3\  scan0205
Date  18th July 1938 guessed
  
Leyland
Continuation of a letter

From LEYLAND MOTORS LIMITED.

-2-

The Rolls-Royce gearbox has now been received at the Works and we are arranging to have this fitted into a passenger chassis for the purpose of service test, both on the box itself and on the servo motor, which in this case will be coupled to a master Lockheed cylinder and made to actuate the brakes on the vehicle in this manner. As you know, Mr. Spurrier Jnr.{Charles L. Jenner} is very much interested in the application of the Rolls servo brake and we are doing all we can to expedite its test.

The information you were good enough to give to Mr. Markland with regard to the clutch mechanism has been very useful and we are now laying out a clutch servo spring of this type, and will test it out on one of our passenger vehicles.

Many thanks for giving a complete set of detail drawings to Mr. Markland from which we can make a crankshaft torsion meter; this apparatus will certainly be very helpful in our investigations on periodic vibration in our oil-engine crankshaft.

On the subject of combustion chambers, you will by this time have received all information we have in our possession with regard to the 'F' type of combustion chamber which was applied to one of our earlier engines.

Mr. Markland advised you with regard to the series of tests which we are conducting at the present time on crankshafts and specimens, in order to obtain the most satisfactory form of shaft to be used in our compression ignition engines. You asked whether we would be prepared to collaborate with you in supplying you with certain data which we obtain as a result of this test. We are prepared to let you have a sight of our confidential report on this crankshaft problem providing, of course, that you on your part will treat the matter with strictest confidence and not in any way disclose this information to any of our competitors.

Our results with chrome hardened cylinder blocks you know have been in every way successful. When applied to petrol engines, the cylinder wear problem appears to
  
  


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