Performance graph comparing the current output curves of Goshawk and Bosch dynamos at various speeds and temperatures.
| Identifier | WestWitteringFiles\J\January1923\ Scan36 | |
| Date | 11th January 1933 | |
| AMPERE OUTPUT OPERATING VOLTAGES [Hot] 15.35 15.1 14.85 14.6 14.35 14.1 13.85 13.8 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 DYNAMO SPEED [R.P.M.] 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800 4000 Field Currents R.R. NO 43. 64°C R.R. EXPL. 62°C C.A.V. D.B. 58°C U.S.A. BOSCH 65°C R.R. Expl. 62°C R.R. N° 43. 64°C U.S.A. Bosch 65°C Full retard C.A.V. D.B. 58°C Specified Performance [Hot] CURRENT CURVES OF R.R. GOSHAWK(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) DYNAMOS AND U.S.A. BOSCH DYNAMO [As found on new bench rig] A {Mr Adams} /A 11-1-33. C. | ||
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).