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 unsatisfactory performance of Delco Remy electric horns due to incorrect relay switches.
| Identifier | ExFiles\Box 166\9\ img062 | |
| Date | 22th March 1937 | |
| W/S. To Cx.{Major Len W. Cox - Advertising Manager} from Rm{William Robotham - Chief Engineer}/Wst. 6066. Rm{William Robotham - Chief Engineer}/Wst.4/AP.22.3.37. DELCO REMY ELECTRIC HORNS. Replying to your Cx.{Major Len W. Cox - Advertising Manager}7/KW.19.3.37., apparently when these horns were fitted to your car the electrician wired them up to the existing Lucas relay switch, which would give you the loud and soft note but not so prominent as when used with the correct Lucas horns. In order to test these horns correctly they should be used with the Delco Remy relay switch which you say was discovered at Lillie Hall after the horns had been despatched to GWH.{George W. Hancock - Head Chateauroux} We would like to point out that the loud and soft arrangement on these windtone horns is responsible in no small measure for their unsatisfactory performance, and we are keen to drop this fitting as soon as possible and should like to have your opinion regarding this policy. Rm{William Robotham - Chief Engineer}/Wst. | ||