Note comparing the capacity of a Bosch battery ignition system with mica and Goshawk condensers.
| Identifier | WestWitteringFiles\G\October1921\ Scan23 | |
| Date | 25th October 1921 | |
| Contd. -2- EFC {E. Fowler Clarke - Electrical Engineer} 2/T25.10.21. that of the Bosch battery ignition, but as pointed out in our note already referred to, the capacity of the Bosch battery ignition per cubic inch is twice as great as we can get in our mica condensers. The first actual Goshawk(Aero Engine)(Codename for 20HP Car / Aero Engine after Kestrel(Aero Engine)) condenser shows the capacity to be approximately as stated above, namely, 1.2 mf. We are experimentally making up a condenser with paper dielectrics to see if we can obtain a greater capacity in a given space. EFC. {E. Fowler Clarke - Electrical Engineer} R. {Sir Henry Royce} R. {Sir Henry Royce} 238B (100 T) (S.H. 798.10-12-20) G. {Mr Griffiths - Chief Accountant / Mr Gnapp} 2948 | ||
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).