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).
Performance comparison table for various dynamos, based on a routine procedure.
| Identifier | ExFiles\Box 60\1\ Scan276 | |
| Date | 1st April 1927 | |
| (03) 40/'60 N.B. DYNAMOS. PERFORMANCE COMPARISON OF DYNAMOS (On routine procedure of 1.4.27). TABLE HEADERS: Dynamo. (8) Speed for 10 V.{VIENNA} 14V. 17V. Speed for 0 amperes at 12.4 V.{VIENNA} (9) Peak Speed. Amperes. 3,400 2500 RPM. amperes. Remarks re commutation. Remarks re silence. TABLE DATA: Row 1: Dynamo: 1. 24S.HO. | Remarks re commutation: O.K. | Remarks re silence: O.K. Row 2: Dynamo: 2. 24S.HO | Remarks re commutation: O.K. | Remarks re silence: O.K. Row 3: Dynamo: L.H. 2. M.{Mr Moon / Mr Moore} | Remarks re commutation: O.K. | Remarks re silence: O.K. Row 4: Dynamo: L.H. 1. M.{Mr Moon / Mr Moore} | Remarks re commutation: O.K. | Remarks re silence: O.K. Row 5: Dynamo: 2. 24S.HO. | Remarks re commutation: O.K. | Remarks re silence: O.K. Row 6: Dynamo: 3. 24 S.HO | Remarks re commutation: O.K. | Remarks re silence: O.K. Row 7: Dynamo: 4. 24 S.HO | Remarks re commutation: O.K. | Remarks re silence: O.K. Row 8: Dynamo: 5. 24 S. HO | Remarks re commutation: O.K. | Remarks re silence: O.K. Row 9: Dynamo: 6. 24 S. HO | Remarks re commutation: O.K. | Remarks re silence: O.K. Row 10: Dynamo: 7. 24S. HO | Remarks re commutation: O.K. | Remarks re silence: O.K. Row 11: Dynamo: 8. 24S. HO | Remarks re commutation: O.K. | Remarks re silence: O.K. | ||