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).
Recommendation to line the ballast coil with asbestos to prevent failures from short-circuiting.
| Identifier | ExFiles\Box 46\3\ Scan180 | |
| Date | 8th August 1919 | |
| 2. is the failure of the ballast resistance, and I again bring forward my previous recommendation that the ballast coil should be better insulated. Mr.Wyer suggests that this case should be lined with asbestos so as to prevent the broken ends of the short circuiting to the case. As pointed out previously, we certainly have had experience of these failures on test. We await to hear further from you on this matter before taking any action. EP.{G. Eric Platford - Chief Quality Engineer} R.R. 252 A.{Mr Adams} (100 T/C) F.396 8-8-19 G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2480. | ||