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 testing of the Trier & Martin lighting system and its advantages over the C.A.V. system.
| Identifier | ExFiles\Box 3\5\ 05-page015 | |
| Date | 28th September 1911 | |
| Y 295 C.C. 28.9.11. X.295. TRIER & MARTIN LIGHTING SYSTEM X.294. With reference to the article from the "Autocar" submitted by Mr. Johnson, we have tested the above system of lighting but do not consider it hardly so generally suitable for our cars as the C.A.V. The advantages of T & M are (a) It has a larger out-put for its weight, being 5 lbs lighter than G type C.A.V. and giving about 10% more current. (b) Its method of maintaining a constant output by using four brushes interconnected by a carefully arranged resistance is good, the current does not vary once it has reached its working capacity. (c) There is no sparking at the brushes. (d) It has a very robust construction and exceptionally large ball bearings. (e) The main switch is of good design and not likely to develop trouble through bad contacts. Contd. | ||