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 data sheet for various ignition coils and contacts, noting amperage, spark length, and sparking levels.
| Identifier | ExFiles\Box 52\3\ Scan340 | |
| Date | 14th February 1916 | |
| X2814 E. {Mr Elliott - Chief Engineer} & S. (500T.) S.C. 523-14-2-16. H. {Arthur M. Hanbury - Head Complaints} Table Columns: Column 1: Remy coil & contacts Column 2: Amps at safe speed Column 3: Amps 2000 revs Column 4: length of contact Column 5: length of spark at 5lbs Column 6: length of spark at 2000 revs Column 7: Sparking at water Table Rows: Row 1: Remy coil & contacts | 2.9 | 1.7 | .6 | 12" | 1/4" | 1/4" | very slight Row 2: Remy coil & contact | 2.9 | 1.8 | .7 | 5 ft | 7/32" | 1/4" | very slight Row 3: Remy coil RR contact | 2.9 | 1.6 | .6 | 5 ft | 9/32" | 1/4" | very slight Row 4: Remy coil RR contact | 2.9 | 1.6 | .65 | 12 | 5/16" | 1/4" | very slight Other Text: Left Margin (vertical): This Sheet must be filed on completion of work. Left Column Header: Sign Right Side Logo: ROLLS-ROYCE, LIMITED. Right Side (vertical): INSTRUCTIONS. Right Side Fields: Order No. Customer's No. ...191 Bottom Left Numbers: 3 .3, 2 .3 | ||