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 for a Bentley car, proposing material substitutions to achieve an approximate 58% saving.
| Identifier | ExFiles\Box 112\2\ scan0128 | |
| Date | 6th December 1937 | |
| 1044 823 To Rm.{William Robotham - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} 6.12.37. BENTLEY 50 MATERIAL COSTS In reply to Rm.{William Robotham - Chief Engineer}3/R.1.12.37 re material costs for the above car, and taking the present cost sheets as a basis from which to work, we can effect a saving of approx. 58% by the following methods:- (1) Substitution of Mild Steel for Staybright. (2) " " Nickel plated mild steel lagging covers for 15% nickel steel covers. (3) Substitution of Jubilee clips for Staybright clips. (4) Use of rubber exhaust suspension instead of present spring type. We give below the actual cost of the parts at present used and the cost of the proposed new parts:- Old Part Present Cost. New Cost EB.1959 Intermediate pipe. 24.583 2.083 EB.1293 Downtake pipe. 12.500 2.000 EB.1290 Expansion box. 9.833 .903 EB.1504 Intermediate pipe sleeve. 2.583 .406 EB.1287 Stay tube - 2off. 2.204 .328 EB.1294 End plate. 2.260 .449 EB.1288 " " 1.165 .148 EB.1137/8 Lagging covers. 9.250 3.700 EB.639 " " 1.458 .972 EB.640 " " 1.458 .972 EB.781 " " 1.375 .917 EB.782 " " 1.375 .917 EB.2108 Lagging Sheet. 2.246 .237 E.60857 Lagging Straps 3 off. 3.450 ) E.79314 " " nut " .120 ) Jubilee E.79322 " " bolt " .414 ) clips. 2.436 E.79313 Distance piece. .168 ) 3 off. EB.1289 Expansion box baffle 1.165 Delete. Nil. Present suspension 5.647 (Estimate (of new 3.000 (rubber (suspn. _______ ________ 84.254 19.468 Other material costs. 25.885 25.885 _______ ________ Total 110.139 45.353 | ||