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 report noting the cooling method for the rear axle casing and the absence of issues.
| Identifier | ExFiles\Box 3\4\ 04-page271 | |
| Date | 8th May 1933 guessed | |
| -5- Water was allowed to trickle over the rear axle casing during tests to keep it reasonably cool. No sign of preignition or other trouble experienced.. ----- | ||