Test log for a B-1 unit crankcase, detailing running hours, dates, test outcomes and failures.
| Identifier | ExFiles\Box 132\3\ scan0034 | |
| Date | 10th August 1935 | |
| x216 10.8.35. B-1 Unit - Crankcase fitted 27.10.33. Time Full Throttle | Total Hrs. mins. | Date | Test Bed or Chassis | 29,908 mls. | 2.11.33. | Chassis 3-B-IV. | | 20.4.35. | " " Rem. 17 hrs. 15 mins. | 32 5 | 24.4.35. | Test Bed No.5 Piston endurance. | | 4.6.35. | (Removed). 10 hrs. 15 mins. | 21 0 | 15.7.35. | Endurance, lead bronze big end and main bearings | | 18.7.35. | (Rem:) Crankcase cracked. Total F.T. | Total 27. hrs. 30 mins. | 53 5 | 18.7.35. | 29,908 miles on the road. | ||
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).