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).
The sparking performance of a Remy 12 ignition system with different condenser configurations.
| Identifier | ExFiles\Box 52\3\ Scan300 | |
| Date | 12th November 1917 | |
| H.R. 235 a (100 T) S & F 846 6-8-19. G. {Mr Griffiths - Chief Accountant / Mr Gnapp} 2469 Contd. -11- EFC {E. Fowler Clarke - Electrical Engineer} 2/T.12.11.17. (4) Experimental for Remy 12. As before stated, there is very little sparking at the primary gaps of Remy 12 with its own condenser in position right up against the points. This is so under all conditions. We have, however, made various experiments with this condenser removed from the contact breaker housing, which experiments are recorded hereunder. Firstly, using no condenser at all we were able to obtain only small secondary sparks, and the primary gap spark is a very bad one of the (a) variety (see p.3). The use of either the 12 cylinder Remy condenser (capacity .465 m.f.) the 6 cylinder Remy condenser (cap..31 mf) or an R.R. carcoil condenser (cap..495 mf) connected to contacts through wires each about one foot long, caused the primary sparking to be, though slight, somewhat more than normal. The 6 cylinder Remy condenser connected as near to contact break points as possible reduced the sparking to very nearly as good as normal. Upon increasing the capacity connected by the one foot wires, by putting condensers in parallel, the amount of primary sparking remained practically as for one condenser. There was, if anything, indication of increase of sparking as the capacity was increased above normal. If this was so, one would think it must be the spark at make | ||