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).
Instructions for a series of tests on insulation, sparking plugs, and commutators.
| Identifier | ExFiles\Box 24\2\ Scan048 | |
| Date | 24th January 1919 | |
| RR.300 (120B) (SF 349 24-1-19) MP 209552 88224 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No. Customer's No. 19 Re Insulation Testing (Cont'd). ① soak in water + weigh periodically. Test breakdown. ② Repeat using mineral oil. ③ For sparking plugs, as above, and test for heat-resisting qualities, by placing on metal plate over gas flame. (all samples under comparison together) Then test breakdown. ④ Make up into plug and test on pro engine. ⑤ For commutators as 1, 2 + 3, and also test for uniformity of thickness with micrometer. Test variety of splitting. (cont'd) Signed This Sheet must be filed on completion of the work. | ||