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).
Tests to measure voltage loss in the headlamp wiring.
| Identifier | ExFiles\Box 168b\2\ img216 | |
| Date | 10th February 1931 | |
| X6082 Wor.{Arthur Wormald - General Works Manager} from PN.{Mr Northey} c. Sg.{Arthur F. Sidgreaves - MD} c. Whr.{Mr Wheeler} EV.{Ivan Evernden - coachwork} c. Hs.{Lord Ernest Hives - Chair} EFC. Pnl/PH10.2.31. X6082 X1357 We have received the attached letter from Sa (Sal/Db{Donald Bastow - Suspensions}6.2.31) and we anticipate that there must have been some error in the wiring of the car in question. Surely, we should not be satisfied for any undesirable amount of lost volts to take place between our battery and headlamps, specially at a time when we are straining every nerve to reduce the wattage of these lamps with as little loss of available light as possible. Will you please have the necessary tests made and let us know what the loss of voltage is between our battery and headlamps in the case of - (1) 60 watt lamps (2) 48 watt lamps. PN.{Mr Northey} | ||