Progress report on experimental work for the fortnight ending 18th June, detailing designs, work carried out, and parts issued.
| Identifier | ExFiles\Box 76\2\ scan0282 | |
| Date | 24th June 1921 | |
| R.R. 225A (100 T) (S.H. 79S. 10-12-20) G 2947 X272 PROGRESS OF EXPERIMENTAL WORK FORTNIGHT ENDING 18TH. JUNE. DESIGNS AND INSTRUCTIONS RECEIVED FROM W.W. LeC.1403 - Bonnet Catch. Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) 11 LeC.1404 - Starter Motor Switch. " LeC.1405 - Proportions of RR Dynamo and Motors. Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) 1&2 DESIGN WORK CARRIED OUT AT DERBY. Throttle & Ignition Control Quadrant. Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) 11 Starting Handle. " Klaxon Push Button Switch on Steering Column. " Side Steering Tube. " Steering Joint on Pendulum Lever. " Hand & Foot Brake Compensating Gear. " Modification to Cylinder Valves. Condor(Aero Engine). Modified Oil Holes in Crankpins. " Modification for Lightening Propeller Hub. " DETAILS OF EXPERIMENTAL PARTS ISSUED BY D.O. Piston LeC.1395/1399. Details completed. Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) 11 Carburetter LeC.1386 Further details issued. " Crankshaft. Further details instructed which complete this section " Crankcase & Bearings LeC.1394 Further details. " Cylinder. LeC.1396/1388/1391. Further details which complete this section. " Radiator.. LeC.1383. Part details. " Exhaust Fittings. N.sch.684/686/814. Further details which complete this section. " Governor Drive for Ignition. LeC.1393/4. Details completed " contd:- | ||
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).