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).
Static build-up from wheel bearings affecting wireless sets, requesting the creation of earthing contacts.
| Identifier | ExFiles\Box 63\2\ scan0222 | |
| Date | 11th May 1936 | |
| To RHC.{R. H. Coverley - Production Engineer} c. to Hs{Lord Ernest Hives - Chair}/Wst. 6153. Hs{Lord Ernest Hives - Chair}/AFM.{Anthony F. Martindale}9/JH.11.5.36. Wireless sets on Cars. It is said by wireless firms of good repute that much trouble is caused them owing to the excellence of our wheel bearings; as the brake drums appear to generate a static potential which cannot be discharged to the chassis owing to the grease film between them. Sg.{Arthur F. Sidgreaves - MD} is anxious for something to be done so will you please make 4 earthing contacts to the attached sketch. Hs{Lord Ernest Hives - Chair}/AFM.{Anthony F. Martindale} | ||