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).
Blueprint graph showing electrical performance test data including amperage, hours, weight, and mileage.
| Identifier | ExFiles\Box 54\1\ Scan244 | |
| Date | 21th February 1927 | |
| 21 - 2 - 27 159 SX 75 A. {Mr Adams} HRS. 103 Lbs AVERAGE AMPERES = 6.34 HOURS = 11.0 AMPERE HOURS = 69.7 .675 180 w. AFTER 8231 MILES | ||