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).
Standardisation of a short connecting rod for the 40/50 chassis to eliminate piston knocks.
| Identifier | ExFiles\Box 171\3\ img017 | |
| Date | 9th April 1919 | |
| R.R. 755. (5 H) (V.V. 472. 30.1.14) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 0819. COMPLETED. 21.11.19. STANDARDISATION OF CHASSIS PARTS. Date 9.4.19. Description of Parts. ORIGINAL. Short Connecting Rod for 40/50 Chassis. Box X 340CD. Drawing No. Z.17755/5. Part List. Origin. The elimination of piston knocks. Experimental Test Report. EH4/LGL.4.19. Road Test Report. We recommend that the short connecting rods for the chassis should be standardised. We are satisfied now that these rods do not make any difference as regards the feel of the engine. 49-GB fitted with these rods is running very very nicely and remarkably smoothly. Capt. Hallam and Mr. Haldenby have had this car out and agree that the engine is very nice. We do not claim that we have removed all traces of piston knocks but we have every confidence that we can satisfy all but the fastidious customers. This is the (Contd) Signature of Exp. Dept. that above is correct. (Sgd) E.{Mr Elliott - Chief Engineer} Hives. Weight of Old Part. Cost of Old Part. £ Weight of New Part. Cost of New Part. £ Difference per Car. Difference per Car. £ Cost of Parts in Works and Stores which will be scrapped if commenced on :- Series................... £.................. Series................... £.................. Storekeeper advised re above. Storekeeper's Signature. Signature of Mr. DeLOOZE that above is correct. SIGNATURES. DATE. REMARKS. Mr. JOHNSON. 20.11.19. Agreed. BJ. Mr. ROYCE. 26.4.19 Agree F.H.R. Mr. WORMALD. 10.4.19. Agreed. Wor.{Arthur Wormald - General Works Manager} Mr. NADIN. (Absent in U.S.A.) Mr. PLATFORD. Mr. Bailey. (Absent in U.S.A.) Mr. NORTHEY. 24.4.19. Agreed. EY. Mr. Day. I agree. Da.{Bernard Day - Chassis Design} Mr. Barrington. Agreed. TBB. | ||