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).
Test of tungsten points, noting discoloration, rust, and recommendations for the next test.
| Identifier | ExFiles\Box 35\6\ scan 060 | |
| 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. 4 19 There was no perceptible resistance either before or after the test. The points were also discoloured & generally affected in the same way as other tungsten points have been, except for some slight scratches due to the rubbing. The roller in contact with the blade in this test, was rusted up, although oiled at the start, and deposited a considerable pile of rust in the bottom of the condenser housing. We suggest that the next set of tungsten points be run with (cont'd) Signed: This Sheet must be filed on completion of the work. | ||