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 reasons for changes to various components.
| Identifier | ExFiles\Box 18\6\ Scan051 | |
| Date | 26th April 1917 guessed | |
| -4- F.4672 - Dummy Lampholder. (Sec:7360).- Dim: .575 altered to .550. Angle of holes added = 30°. REASON.- Pre-War Error. F.614 - Boss for tail lamp fitting. (Sec:7080).- Note "To suit terminal fitting F.623" deleted. Angle of tapped holes added = 30°. REASON.- D.{John DeLooze - Company Secretary} O.{Mr Oldham} revision. F.554 - Shock Absorber Lever. (Sec: 7160).- Material altered from M.S. to N.S. No Prints req'd.{John DeLooze - Company Secretary} for America. Not used on Production. REASON.- Mr. Bailey's instructions. F.7631 - Frame Bending. (Sec: 7000).- .025 cfr. altered to .010 cfr. at 45°. +5 +5 REASON.- "Works" request. E.13797-Brg: Brkt. (Comm: End). E.13822-End Cover.(Sec:7210).- Dim: 4.750 dia. altered to 4.775 dia. +25 -10 Dim: 4.750 dia. altered to 4.750. -25 +10 REASON.- Mr. Burton's instructions. | ||