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).
Condenser capacity experiments for Goshawk and 40/50 chassis ignition systems.
| Identifier | WestWitteringFiles\G\September1921\ Scan89 | |
| Date | 27th September 1921 | |
| R.R. 235A (100 T) (S.H. 798, 10-12-20) G 2947 Contd. -3- EFC2/T27.9.21. namely, .244 mf. per cubic inch, this will give us a capacity of .31 mf. We welcome the possibility of being able to use a condenser of rather larger capacity for the Goshawk since experiment has pointed to the probability that the larger condenser will be an advantage, particularly so owing to the proposed reduction in the amount of the ballast resistance. We think that the ignition on these lines will be found to be at least as satisfactory as that on the 40/50 chassis. We reported in our EFC2/T5.9.21 that we found the Bosch condenser to heat up due to di-electric losses on 200 volts A.C. 50~, allowing quite a large leakage conductance x2894 As stated in Hs{Lord Ernest Hives - Chair}7/LG16.9.21, the combination of a Bosch condenser of .5 mf. and tungsten points is running on chassis 1EX. We are also running on the bench a combination of tungsten points with condenser capacity of double the normal amount. EFC. | ||