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).
Statistical report on hydraulic system complaints, broken down by type and model, over a six-month period.
| Identifier | ExFiles\Box 130\4\ scan0101 | |
| Date | 20th June 1936 guessed | |
| - 6 - TOTAL HYDRAULIC COMPLAINTS. 25 HP. 30 HP. PH.II. PH.III. TOTAL. GRAND TOTAL. REMARKS. December Quarter. C.C. 31 3 23 5 62) C.P. 6 1 3 - 10) 72 Previous Quarter. C.C. 82 5 48 - 135) C.P. 19 2 11 - 32) 167 Six Months. 138 11 85 5 239 239 HYDRAULIC KNOCKS. December Quarter. C.C. 14 1 11 - 26) C.P. 3 1 2 - 6) 32 Previous Quarter. C.C. 48 1 32 - 81) C.P. 12 - 7 - 19) 100 Six Months. 77 3 52 - 132 132 Remarks: Some of these knocks are from damper connection or loose bolts. Remainder are internal knocks from pistons and bearing pads or main bushes. Better fitting bushes are being used on Production. Handwritten Note: Les- This is a formidable list. RM{William Robotham - Chief Engineer} HYDRAULIC LEAKS. December Quarter. C.C. 5 - 2 3 10) C.P. - - - - -) 10 Previous Quarter. C.C. 13 1 4 - 18) C.P. 4 - 2 - 6) 24 Six Months. 22 1 8 3 34 34 Handwritten Note: Do these leaks empty the shock damper or is the complaint from appearance only. Is the leak always from the gland? HYDRAULICS LOOSE ON FRAME. December Quarter. C.C. 7 - 4 1 12) C.P. 1 - 1 - 2) 14 Previous Quarter. C.C. 8 - 3 - 11) C.P. - - - - -) 11 Six Months. 16 - 8 1 25) 25 Remarks: Larger diameter bolts now being fitted on Production to overcome this complaint. | ||