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).
Record of piston profile measurements before and after 15,000 miles of use.
| Identifier | ExFiles\Box 101\2\ scan0254 | |
| Date | 4th March 1937 | |
| UNIT C17 PROFILES OF PISTONS BEFORE & AFTER 15,000 MILES PISTONS E.60632. PROFILES GROUND TO E.60633 NOTE: PISTONS CRACK TESTED AND FOUND O.K. TABLE DATA: PISTON 1 RELIEVED PORTION: POSITION | NEW | AFTER TEST | WEAR A.{Mr Adams} | 3.481 | 3.481 | NIL. B. | 3.4849 | 3.4849 | NIL. C. | 3.4884 | 3.4884 | NIL. D.{John DeLooze - Company Secretary} | 3.486 | 3.486 | NIL. E.{Mr Elliott - Chief Engineer} | 3.4908 | 3.4903 | .0005 F.{Mr Friese} | 3.4957 | 3.4952 | .0005 BEDDING PORTION: POSITION | NEW | AFTER TEST | WEAR A.1. | 3.481 | 3.4809 | .0001 B.1. | 3.4849 | 3.4849 | NIL. C.1. | 3.488 | 3.488 | NIL. D.1. | 3.498 | 3.4976 | .0004 E.1. | 3.500 | 3.500 | NIL. F.1. | 3.501 | 3.501 | NIL. PISTON 2 RELIEVED PORTION: POSITION | NEW | AFTER TEST | WEAR A.{Mr Adams} | 3.4802 | 3.4802 | NIL. B. | 3.484 | 3.484 | NIL. C. | 3.4875 | 3.4875 | NIL. D.{John DeLooze - Company Secretary} | 3.4861 | 3.4861 | NIL. E.{Mr Elliott - Chief Engineer} | 3.491 | 3.491 | NIL. F.{Mr Friese} | 3.495 | 3.4948 | .0002 BEDDING PORTION: POSITION | NEW | AFTER TEST | WEAR A.1. | 3.4807 | 3.4807 | NIL. B.1. | 3.484 | 3.484 | NIL. C.1. | 3.4875 | 3.4875 | NIL. D.1. | 3.4977 | 3.4977 | NIL. E.1. | 3.4994 | 3.4994 | NIL. F.1. | 3.500 | 3.500 | NIL. PISTON 3 RELIEVED PORTION: POSITION | NEW | AFTER TEST | WEAR A.{Mr Adams} | 3.479 | 3.479 | NIL. B. | 3.484 | 3.484 | NIL. C. | 3.4875 | 3.4875 | NIL. D.{John DeLooze - Company Secretary} | 3.486 | 3.486 | NIL. E.{Mr Elliott - Chief Engineer} | 3.4905 | 3.4905 | NIL. F.{Mr Friese} | 3.4948 | 3.4948 | NIL. BEDDING PORTION: POSITION | NEW | AFTER TEST | WEAR A.1. | 3.479 | 3.479 | NIL. B.1. | 3.484 | 3.484 | NIL. C.1. | 3.4875 | 3.4875 | NIL. D.1. | 3.4975 | 3.4975 | NIL. E.1. | 3.4992 | 3.4992 | NIL. F.1. | 3.4998 | 3.4998 | NIL. PISTON 4 RELIEVED PORTION: POSITION | NEW | AFTER TEST | WEAR A.{Mr Adams} | 3.480 | 3.480 | NIL. B. | 3.4848 | 3.4848 | NIL. C. | 3.488 | 3.488 | NIL. D.{John DeLooze - Company Secretary} | 3.486 | 3.486 | NIL. E.{Mr Elliott - Chief Engineer} | 3.491 | 3.491 | NIL. F.{Mr Friese} | 3.496 | 3.496 | NIL. BEDDING PORTION: POSITION | NEW | AFTER TEST | WEAR A.1. | 3.480 | 3.480 | NIL. B.1. | 3.4844 | 3.4844 | NIL. C.1. | 3.4878 | 3.4878 | NIL. D.1. | 3.4977 | 3.4977 | NIL. E.1. | 3.500 | 3.500 | NIL. F.1. | 3.501 | 3.501 | NIL. PISTON 5 RELIEVED PORTION: POSITION | NEW | AFTER TEST | WEAR A.{Mr Adams} | 3.480 | 3.479 | .001 B. | 3.4845 | 3.4845 | NIL. C. | 3.4878 | 3.4878 | NIL. D.{John DeLooze - Company Secretary} | 3.486 | 3.486 | NIL. E.{Mr Elliott - Chief Engineer} | 3.490 | 3.490 | NIL. F.{Mr Friese} | 3.4948 | 3.4948 | NIL. BEDDING PORTION: POSITION | NEW | AFTER TEST | WEAR A.1. | 3.480 | 3.480 | NIL. B.1. | 3.4845 | 3.4845 | NIL. C.1. | 3.4877 | 3.4877 | NIL. D.1. | 3.4976 | 3.4976 | NIL. E.1. | 3.5002 | 3.5002 | NIL. F.1. | 3.5012 | 3.5012 | NIL. PISTON 6 RELIEVED PORTION: POSITION | NEW | AFTER TEST | WEAR A.{Mr Adams} | 3.480 | 3.480 | NIL. B. | 3.484 | 3.484 | NIL. C. | 3.4874 | 3.4874 | NIL. D.{John DeLooze - Company Secretary} | 3.4865 | 3.4865 | NIL. E.{Mr Elliott - Chief Engineer} | 3.4908 | 3.4908 | NIL. F.{Mr Friese} | 3.495 | 3.495 | NIL. BEDDING PORTION: POSITION | NEW | AFTER TEST | WEAR A.1. | 3.480 | 3.480 | NIL. B.1. | 3.484 | 3.484 | NIL. C.1. | 3.4877 | 3.4877 | NIL. D.1. | 3.4978 | 3.4978 | NIL. E.1. | 3.4998 | 3.4998 | NIL. F.1. | 3.5005 | 3.5005 | NIL. | ||