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).
Technical memorandum comparing a new condenser's performance against the standard one for battery ignition systems.
| Identifier | ExFiles\Box 165\5\ img056 | |
| Date | 23th August 1932 | |
| -2- Hs{Lord Ernest Hives - Chair}/Wst.3/KT.23.8.32. the maximum effect is still less than with that obtained with our standard condenser, and we have additionally the extra advantage of the primary voltage being considerably higher at break due to the capacity remaining constant. It is quite possible, and in fact we have had cases in the past, that misfiring occurs when the engine is hot, due to this rise of capacity with temperature with our standard condensers, causing a large unwanted dissipation of coil energy. It will be noted from the curves that the capacity of the new condenser is considerably less than our standard condenser. This has been found an advantage in that no adverse effect has been noted in the life of the contact points, whereas a much better performance can be obtained from the ignition coil. With this new condenser, therefore, we are confident a big improvement will be made on the battery ignition system on our cars, and we recommend, if possible, these condensers should also be introduced on both the 40/50 and 20/25 as well as Peregrine, by modifying our existing distributors to take this condenser. We would point out that this type of condenser is now standard on all other makes of battery ignition distributors. Hs{Lord Ernest Hives - Chair}/Wst. Curves attached. | ||