Instructions detailing a preliminary test on electrical points.
| Identifier | ExFiles\Box 34\1\ Scan282 | |
| Date | 6th November 1918 | |
| RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No. Customer's No. 3 19 A preliminary test under otherwise standard conditions, indicated that merely insulating the roller from the blade would not appreciably affect the performance of the points. But with the above arrangement the points ran very well for 200 hours, the average current being .9 amp. Some mixing took place at the end of the run, but there was no perceptible contact resistance. The condition of the points is considerably better than most sets in tungsten, there being only a (Cont-d) Signed This Sheet must be filed on completion of the work. | ||
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).