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).
Specification for the build of four new I/C B.80 units, detailing crankcase, bearings, valves, and fittings.
| Identifier | ExFiles\Box 123\5\ scan0195 | |
| Date | 30th November 1938 | |
| 1044. & Spec: To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} c. Da{Bernard Day - Chassis Design}/Jnr.{Charles L. Jenner} c. Da{Bernard Day - Chassis Design}/MCS. c. By/CS. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}1/MH.{M. Huckerby}30.11.38. B.80 UNITS. Regarding the 4 new I/C B.80 units, will you please build to the following specification. Crankcase and Bearings. Nos. 1 and 2 units as per LOP.EB.4248. Nos. 3 and 4 to incorporate:- (a) Raised valve guide bosses PD.266. (b) Vandervell main bearing which Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}will supply (EB.4417/8/9/20/21/22/23/24). Case to have main bearing bore dimensions as EB.4387, also bearing locking slots, the existing dowels being deleted. Main bearing caps to EB.4393/4/5/6. Regarding the intermediate main bearing caps EB.4395, 6 per unit are required. Thrust washers to EB.4429/30 which Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} will supply. The reason we can quote EB. numbers is that this job has been incorporated on the large bore '60' but not the '80'. Valves and Fittings. As LOP.EB.4112 except for the following:- Nos. 1, 2, 3 and 4 units. Inlet valve spring top washers to EB.4402. " " " s - EB4401. " " " bottom washers EB.4403. | ||