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).
Manufacturing operations and cost breakdown for Wraith Pedal Gap Plates.
| Identifier | ExFiles\Box 148\5\ scan0370 | |
| Date | 12th July 1938 | |
| PEDAL GAP PLATES - Cont'd.{John DeLooze - Company Secretary} WRAITH The Wraith Pedal Gap Plate, FW.1227/S, is of two piece construction, and is at present sandcast at R.R. Total foundry time allowance is 134 minutes. The operations etc., are as follows :- | OP NO. | OPERATION. | SETTING TIME. | TIME ALL: | DIRECT COST (Pair) | | :--- | :-------------------------------------------------------------------- | :------------ | :-------- | :----------------- | | 1. | Mill joint faces on each half for bolting together. | 1 hr. | 14 m.{Mr Moon / Mr Moore} Pr.{Percy H. Rose} | 2 1/2d | | 2. | Drill holes for bolting together. | 30 m.{Mr Moon / Mr Moore} | 6 m.{Mr Moon / Mr Moore} Pr.{Percy H. Rose} | 1 1/4d | | 3. | Remove burrs and bolt together. | | 60 m.{Mr Moon / Mr Moore} Pr.{Percy H. Rose} | 9 1/2d | | 4. | Mill irregular faces. | 1 hr. | 6 m.{Mr Moon / Mr Moore} Pr.{Percy H. Rose} | 1 1/4d | | 5. | Drill holes in outer flanges and 2 holes (Sec.D.D) in top face. | | 20 m.{Mr Moon / Mr Moore} Pr.{Percy H. Rose} | 3 1/4d | | 6. | Countersink. | | 7 m.{Mr Moon / Mr Moore} Pr.{Percy H. Rose} | 1 1/4d | | 7. | Drill and csk. all inclined holes. | | 13 m.{Mr Moon / Mr Moore} Pr.{Percy H. Rose} | 2 1/2d | | 8. | Remove burrs. | | 5 m.{Mr Moon / Mr Moore} Pr.{Percy H. Rose} | 1d | £. s. d.{John DeLooze - Company Secretary} Material Cost............................... 0. 5. 1 1/2 Direct Foundry Labour Cost.................. 0. 2. 0 1/4 Direct Machine & Fitting Labour Cost........ 0. 1. 11. Charges..................................... 0. 7. 10 1/2 Total Factory Cost.......................... 0. 16. 11 1/4 | ||