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).
Instruction sheet detailing the examination and replacement of a ballast resistance on chassis 101.UF.
| Identifier | ExFiles\Box 69\1\ scan0244 | |
| Date | 21th October 1929 | |
| RR 228 (150 BKS.) (DB{Donald Bastow - Suspensions} 461-8-12-24) MP 306975 X8710. ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.{Mr Elliott - Chief Engineer} & C. Order No.: WD{Mr Wood/Mr Whitehead}84 Customer's No.: X8710 / X7720 Date: 21-10-1929 Ballast resistance off chassis 101.UF. We have examined this ballast resistance in the lab and find it to be quite OK but of the old single type with a cold resistance of .84 ohms as against the present standard ballast of 1.50 ohms. This would certainly help, combined with other abnormal conditions, to produce the primary charring of the coil from this chassis. We will replace this ballast with a 1 1/4 type present std ballast we have in the lab. Signed: R.E.W. This Sheet must be filed on completion of the work. | ||