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).
Wear test report on a bone grey fibre rubbing block, detailing a 10,000 mile equivalent run.
| Identifier | ExFiles\Box 69\1\ scan0343 | |
| Date | 15th July 1924 | |
| RR 238 (150 BKS.) (SH57.29-8-20.) MP 224358 X. 4646. ROLLS-ROYCE LTD. INSTRUCTIONS. IL To E.F.G. Order No. W.A. 63. Customer's No. X 4646. Date 15 - 7 - 1924 Wear test on Bone grey fibre rubbing block. (1st sample, lubricated) The above rubbing block fitted to a standard lever, has now completed a run equivalent to 10,000 miles, on our standard ignition rig. The dimensions were carefully observed before and after running and the cam was kept well lubricated. Dimensions before running top .255" middle .256" Bottom .257" Spring load 1.25 lbs Signed Contd This Sheet must be filed on completion of the work. | ||