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).
Notes on the properties and manufacturing tolerances of Ferobestos L.A. material.
| Identifier | ExFiles\Box 136\2\ scan0325 | |
| Date | 7th May 1941 | |
| Hm{Capt. W. Hallam - Head Repairs}/GB.2/ST.7.5.41 - 2 - 6. FEROBESTOS L.A. - D = 1 3/8" water lubrication when N was 720 /u was .0016 " N " 187 /u " .028 Ferobestos can be turned to any required size. It is usual to supply finished bushes. The usual tolerances on the bore are up to 1" dia. .002" 1" to 3" " .003" above 3" " .005" L.A. is somewhat easier to make than N.W.I. This information was obtained from Mr. Shilton of Ferodo. Hm{Capt. W. Hallam - Head Repairs}/GB. | ||