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 modifications and parts for electrical systems and Engine No. 14 Unit.
| Identifier | ExFiles\Box 92\6\ scan0241 | |
| Date | 28th February 1938 | |
| -6- Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}4/WH.28.2.38. Description of Part. Manufac-tured. Details Req'd.{John DeLooze - Company Secretary} Design Req'd.{John DeLooze - Company Secretary} Electrical. 25/30 type starter motor. Design Req'd: Yes. 25/30 dynamo 1.5 ratio. Details Req'd: Yes. Instrument board LOP.76159, DW.391, RR.Sch.1110. Manufac-tured: Yes. New position of distributor board. Manufac-tured: Yes. Regulator and cut out (2 1/2 turns) LOP.392. Manufac-tured: Yes. Engine No.14 Unit. (1) .4 carbon Packard crankshaft. Manufac-tured: ✓, Details Req'd: Yes. (2) Crankcase modified to simplify deletion of oil cooler ECD.290. Details Req'd: Yes. (3) Crankcase and bearing caps to suit main bearings without shims. Design Req'd: Yes. (4) 1 1/2 speed dyno. and pump and necessary mods. to crankcase. Only ex scheme available. New. P.III dynamo. Design Req'd: Yes. (5) Wraith type cylindrical bottom tappets if such design possible. Failing this, simplified rectangular bottom tappet scheme LeC.5667, 3 blocks to have I/C with chilled face and 3 S/ZN with plated faces. Design Req'd: Yes. (6) Whitemetal main bearings but without shims. Design Req'd: Yes. (7) A side 1 - 3 Std. cylinder liners. Manufac-tured: Yes. " " 4 - 6 RR produced (High Phosphorous) as per 2 grs. ordered by By.{R.W. Bailey - Chief Engineer} Details Req'd: Yes. B side 1 - 3. Manufac-tured: Yes, Details Req'd: Yes. B " 4 - 6 (8) Pistons as existing semi split RR type. Top rings to LB.2378. Manufac-tured: Yes. | ||