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).
Cost analysis for decarbonization services on two different models.
| Identifier | ExFiles\Box 107\2\ scan0055 | |
| Date | 13th June 1941 guessed | |
| Bottom decarb. B 125 DG skilled Rate semi skilled Rate £ s d Fitter 29 hrs 1" 3 8 1/4 1" 3 2 . 6 . 6 3/4 decarb carburetter 2 " 1 . 2 1 5 2 . 11 Test 6 " 1 . 8 10 . 0 adjust tappets. 3 " 1 . 2 3 . 6 after test. 3 . 2 . 11 3/4 Total hrs skilled 40 semi 9 1/4 Total labour £s 4 9 1/4 Bottom decarb. & fit six big ends & No 1 main nip up remainder. B135 CW skilled Rate semi Rate £ s d Fitter 20 hrs 1 . 0 20 hrs 7d 1 . 11 . 8 " 23 " 1 . 8 23 " 9d 1 . 18 . 4 decarb carburetter adjust. 3 " 1 . 3 1 " 5d 3 . 9 Wash car 2 " 1 . 2 2 . 4 clean down sump 1 " 1" 1 1 . 1 Test 5 1 . 8 8 . 4 adjust tappets 1 1 . 7 1 . 8 1/2 1 . 7 8 1/2 52 48 £5 . 5 . 5 1/2 Total labour £s 100 | ||