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 detailing wear results for 'Bone grey fibre' samples under various chassis and bench conditions.
| Identifier | WestWitteringFiles\N\July1925-September1925\ Scan7 | |
| Date | 1st July 1925 | |
| EFC3/T1.7.25. -5- Contd. Test No.10. 8.12.24. Bone grey fibre (second sample) run on 98-NK 14,800 miles under severe chassis conditions in France. Wear .007". Condition of block quite satisfactory. Test No.11. 5.12.24. Bone grey fibre (second sample) Run on bench for equivalent 10,000 miles. Unlubricated cam. Wear .004" Test No.12. 19.12.24. Bone grey fibre (first sample). Run on chassis 9-PK for 10,000 miles under severe conditions in France. Wear .007" Test No.13. 2.3.25. Bone grey fibre (second sample). Run on bench for equivalent 10,000 miles with lubricated cam. Maximum wear .002" Test No.14. 19.6.25. Bone grey fibre (first sample). Run on chassis 6-GII for 12,239 miles under normal chassis conditions. Maximum wear .004" Test No.15. 30.6.25. Bone grey fibre (second sample). Run on chassis 5-EX for 11,122 miles under normal chassis conditions. Maximum wear .004" Contd. | ||