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 report discussing issues and solutions for trafficators, general wiring, and H.T. cables.
| Identifier | ExFiles\Box 168a\4\ img202 | |
| Date | 22th April 1941 | |
| Rm{William Robotham - Chief Engineer}/RC.{R. Childs}8/AT.22.4.41. - 8 - With this vane, the arm can be operated perfectly at speeds of 85 M.P.H. We have also found a cure for (i) Sluggish action of the arm, (ii) Indicator sticking in the "OFF" position (see Rm{William Robotham - Chief Engineer}/RC.{R. Childs}5/T.3.2.41). Trafficators having this vane attached are fotted to 9.B.V. We have had no reports of trafficator trouble this month. We are arranging for trafficator pivot bushes to be chromium plated on all the experimental cars, also an endurance test is to be carried out on a rig outside the shop. WIRING GENERAL. We have arranged for a positive earth on all future cars. We have converted 9.B.V and the Ripplet. An improved layout for the main battery lead has been issued for B.V cars. We are modifying our cars in this respect, as the occasion arises. H.T. CABLES. No metal tubes are to be used on the four cylinder engines. America claims that metal loops of any kind round the H.T. wires is bad practice. The reason is that the metal tubes increase the capacity of the secondary system, and therefore increase the load on the coil. We have not yet been able to obtain any measurable difference on our six or eight cylinders and, at the moment, we recommend tubes for these cars, since the very slight increase in coil load is outweighed by the neater appearance. The Rover and Lanchester have a bakelite cover for the wires. This would solve the problem. | ||