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 results for low-speed sparking and various circuit tests.
| Identifier | ExFiles\Box 48\2\ Scan142 | |
| Date | 29th June 1920 | |
| RR 238 (100 BKS.) (BH57. 29-6-20.) MP 22435R ROLLS-ROYCE LTD. INSTRUCTIONS. To 19 Order No. W.a-b4 (3) Customer's No. VII. Low speed sparking a. {Mr Adams} Fully advanced. 140 rpm b. Central position 190 rpm c. Fully retarded 230 rpm (Hand range only) NO. 28533. I. Safety gap 11.2 m.m. II. Primary gap .012" III. Endurance test. (same as for NO 28531) IV. Short circuit test OK. V. {VIENNA} Open circuit test (See remarks for NO 28531) VI. Utility test (using Remy coil sec'y as leak) Signed Contd. This Sheet must be filed on completion of the work. | ||