Graph comparing the output curves of Goshawk and U.S.A. Bosch dynamos.
| Identifier | WestWitteringFiles\J\March1923\ Scan3 | |
| Date | 11th January 1933 | |
| OUTPUT 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] AMPERE OUTPUT 0, 2, 4, 6, 8, 10, 12, 14, 16 OPERATING VOLTAGES [Hot] 13.6, 13.85, 14.1, 14.35, 14.6, 15.1, 15.55 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 Curve Labels: RR EXpl. 20 S.W.G. Field. 68°C. Extra retard. RR EXpl. 62°C. U.S.A Bosch 65°C. Full retard. C.A.V. D.B. 58°C. Specified Performance [Hot] Field Currents: R.R.No.43 64°C R.R. Expl. 62°C R.R.Expl. 20 S.W.G. 68°C C.A.V. D.B. 58°C U.S.A. Bosch 65°C Top Right Corner: #1/A 11-I-33 Eq. C 23.JAN.33 | ||
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).