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 condensers used in battery ignition, detailing new specifications and capacities.
| Identifier | ExFiles\Box 37\1\ scan 057 | |
| Date | 3rd January 1919 | |
| X. 3199. To Mr. Coverley. from EFC. EFC2/T3.1.19. 3rd, January 1919. X. 2512 RE CONDENSERS FOR BATTERY IGNITION X. 3199 X. 3129 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.{Sir Henry Royce} R.{Sir Henry Royce} 12 and R.{Sir Henry Royce} R.{Sir Henry Royce} 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 " .24 m.f. now instruct ed.{J. L. Edwards} { (R.R.12. C 1.250 In process of construction. {R.R.13. A 1.500 The number R.R.9 will not be used as it is considered better to use 12 and 13 for these last two condensers. EFC, | ||