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).
Cost analysis of existing Bentley parts compared with potential alternative reductions.
| Identifier | ExFiles\Box 82\4\ scan0357 | |
| Date | 25th August 1936 | |
| X200 EXISTING BENTLEY PARTS AND COST. Part No. Description No. Off. Material. Labour Total E.54970 Rocker Bush BZ/PC 24 8.040 .911 EB.175 Valve Spring S/CU 12 6.096 1.946 E.50225 Roller Pin. 12 .324 1.105 E.50226 Roller 12 .648 3.864 EB.1746 Ex. Valve KE.965 6 8.526 9.220 23.634 17.046 40.68 REPEAT OF ABOVE WITH POSSIBLE ALTERNATIVE REDUCTIONS. Alternative Bushes in AC4 24 6.350 .911 Rocker Bush Deleted (running on coppered shaft) - - - EB.175 Valve Spring S/CS. 12 1.900 1.946 Delete Roller & Pin using pad follower - - - EB.1746 Ex. Valve S/SLV. 6 4.134 9.220 6.034 11.166 17.2 T Saving Sllgs. = 23.48 | ||