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).
Modifying instructions for the production of condensers for battery ignition systems.
| Identifier | ExFiles\Box 34\1\ Scan038 | |
| Date | 3rd January 1919 | |
| To RHC.{R. H. Coverley - Production Engineer} from EFC. X.2512. EFC2/T3.1.19. X.2512 FE CONDENSERS FOR BATTERY IGNITION X3199 X3129 Regarding condensers ( instructions EFC6/T121218 and modified instructions under EFC/AT201218) owing to the capacity of the three condensers so far produced not coming up to expectations, we would like to further modify the instructions in such a way that two further condensers (R.R.12 and R.R.13) are produced of 1.250" and 1.500" depth respectively. The condensers already produced or now instructed will therefore now be according to the following table:- Designation. Type. Aero or Chassis. Depth. Remarks. produced { (R.R.8 A .500" Capacity .15 m.f. { (R.R.10 C .750" " .175 m.f. { (R.R.11 C 1.000" " .25 m.f. now in- { (R.R.12 C 1.250" In process of structed. { (R.R.13 A 1.500" construction. The number R.R.9 will not be used as it is considered better to use 12 or 13 for these last two condensers. EFC. | ||