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).
List of engineering change proposals and implementation dates for various components.
| Identifier | ExFiles\Box 81\2\ scan0153 | |
| Date | 21th March 1924 | |
| -2- BJ/Py3/D21.3.24. No. 34. Water Connection (Radiator to Pump) To break this pipe near pump as shown on Print A-5207 and use E-18196 (Bottom radiator connection) again on inlet of water pump. To omit clip E-19476 on wheelcase. It is proposed later to combine E-18196 with the pump inlet casting. To come into force on April 5. No. 35. Steel Washers in rear axle. To fit steel washers A-5190 below bolt heads in flanges of rear axle case. To come into force on March 30th. No. 36. Connecting Rod Bolt. To modify head of con. rod bolt and corresponding milling on con. rod as shown. To come into force on May 10. No. 37. Crankcase & Bearings. To carry out the modification shown on the attached sketch, A-5241, to the 4 intermediate camshaft bearings. To come into force immediately. No. 38. Fiber Washer Slipper Flywheel. To substitute "bone-grey" fiber .100 thick, sanded on both faces for red fiber washers. To use bone-grey fiber for all fiber rubbing surfaces on car and call for sanding wherever surfaces are required flat. Proposed to continue present practice. No. 39. Rolls-Royce Threads. To adopt simplified system of threads shown in attached letter on all cars of Springfield manufacture. To come into force on in July next. BJ/Py. | ||