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).
Price comparison of various magnetos for 40/50 HP chassis and 12-cylinder aero engines.
| Identifier | ExFiles\Box 50\1\ Scan056 | |
| Date | 9th September 1927 | |
| X4289 ROY{Sir Henry Royce}1/MG9.9.27. (modified) COMPARISON OF MAGNETO PRICES. 40/50 HP. Chassis Magnetos. Watford present standard E.O.6. (i.e. sleeve type).. £11. 0. 0d Proposed Watford...... E.W.6 (i.e. sleeveless type). 7.16. 0d Scintilla............ GN.6. ................ 8.10. 0d Price without 33-1/3% duty........... 6. 7. 6d. Bosch.............. FE.6. ................ 6.17. 6d. Price without 33-1/3% duty. .......... 5. 3. 1d. Note: (In Roy{Sir Henry Royce}4/MG29.8.27 to PJ, copy to yourself, etc. I advised the price of the Watford sleeveless EW6 machine as £8.10.0d, this being the figure put forward by Mr. North last week. In a communication since to hand from the Watford Co. they state they have been able to modify this figure to £7.16.0d.) 12-Cylinder Aero Magnetos. B.T.H. ............ SC12/7 fully screened, as used on FALCON XI..... £19. 5. 0d. B.T.H. ............ SV12/A, fully screened, as used on CONDOR...... 21. 0. 0d. Scintilla. ........ GN12/D.{John DeLooze - Company Secretary} ............... 13. 3. 4d. Price without 33-1/3% duty ........... 9.17.6d. Bosch ............. GF.12 ................ 10.10. 0d. Price without 33-1/3% duty .......... 7.17. 6d. Note: (The Bosch GF.12 gives 4 sparks per revolution of the armature spindle). The Scintilla and Bosch prices in each case include the 33-1/3% duty to which such supplies are now subjected whether they are used for Passenger Cars or Aero Engines. The second figures are the first figures less 25%, i.e. adding 33-1/3% duty to such second figures, we get the proposed selling price in this country. Copies of communications from the Bosch and Scintilla Companies are attached - receipt of which I have acknowledged. ROY.{Sir Henry Royce} | ||