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).
List of engineering modifications and their reasons for various components.
| Identifier | ExFiles\Box 18\6\ Scan045 | |
| Date | 10th December 1919 guessed | |
| -2- F.5732 - Turning Barrel carrying Switch Drum. (Sec.7060).- Hole for locking pin altered from .075 dia. (+3) to .062 dia. (+3). REASON.- T. O.{Mr Oldham} request, owing to D.{John DeLooze - Company Secretary} O.{Mr Oldham} error. F.7082 - Actuating Box L.O.P. (Sheet 1). Sec. 7280.- The following to be added:- K.{Mr Kilner} 4401 - 5 B.A. Washer. 3 off. K.4851 - .093 Taper Pin. 2 off. REASON.- "Works" request. F.7083 - Connecting Yoke for Magnet Cores. (Sec.7280).- Two slots for .093 Taper Pins require adding. REASON.- "Works" request. F.2619 - Rear Cross Member. (Sec: 7000).- Drilling added for Tail Lamp Junction Box. REASON.- D.{John DeLooze - Company Secretary} O.{Mr Oldham} addition. F.7584/5 - Wiring Brkt. for Cross Member. (Sec:7360).- .050 Rads. (+10) added. Also the following note,- "Spot face .450 dia. (+10)". REASON.- To prevent Brackets breaking. | ||