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 and usage log for various component sets, detailing performance, mileage, and failures.
| Identifier | ExFiles\Box 85\3\ scan0085 | |
| Date | 12th April 1934 | |
| -2- 12.4.34. Set 3. (A Type) - Fitted to Unit B.2. Test bed running at and above 4000 r.p.m. = ½ hr. Unit fitted to chassis GN.60. Mileage to date = 7894. Total running to date = ½ hr. + 7894 miles. Still in use. Set 4. (B Type) - fitted to Unit B-3, Chassis 4-B-IV. Total running to date = 10,414 miles. Still in use. Set 5. (B Type) - Fitted to unit B.5. Test bed running at and above 4000 r.p.m. = ¼ hr. Unit fitted to chassis 2-B-IV. Total running to date = ¼ hr. + 2353 miles. Still in use. Set 6. (B Type). - Fitted to Unit C.X. No full throttle running to date. Set 7 (EX.13352 Reduced Bearing width). Fitted to Unit B.6. Test bed running at and over 4000 r.p.m. - 17½ hrs. Big end seized due to oil supply failure. No. 5 replaced by new rod. Test bed running continued for - 6½ hrs. | ||