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).
Standardisation of parts document for an Overdrive Gearbox.
| Identifier | ExFiles\Box 171\5\ img052 | |
| Date | 8th March 1938 | |
| COMPLETED 22.9.38. RR 785B (10M) (45689) 19/10/37 C.E.Co. BENTLEY STANDARDISATION OF PARTS Description: OVERDRIVE GEARBOX. US Purpose: To reduce engine revs and increase bearing life. Also to add a selling feature. Date Issued: 8.3.38. Sheet No. S.8. Drg. No. L.O.P.S. Brief Report and Remarks: Has run 7,000 miles on 6.B.IV. in France and will have completed 15,000 miles before cars reach customers. A standard box has run 100 hours full torque on dynamometer on 3rd. gear using brass bushes. When recommended for Introduction: 101 in M Old Parts: Material £8.10.10, Labour £9.4.0, Burden £16.2.0, Total £33.16.10. New Parts: Material £8.12.3, Labour £9.6.10, Burden £16.6.11, Total £34.6.0. Increase in Cost £0.9.2. Handwritten: ARH 11/5/38 Production Position and Comments: Cost of Tools £134.0.0d. Introduction of overdrive gearbox at 1st. chassis in 'M' series involves scrapping of existing parts value £8/0.13.8d. this surplus being brought about by the fact that all material for Standard or Non-Overdrive type Gearbox was originally issued for first half of 'M' series. The Overdrive gearbox increases Factory cost of chassis by 9/2d. and involves a tool cost of £134.0.0d. RHC.{R. H. Coverley - Production Engineer} Authorisation to Proceed. Introduce on the 1 Chassis in M Series. Signature Sg.{Arthur F. Sidgreaves - MD} Date: 20/9/38 Signature Hs.{Lord Ernest Hives - Chair} Date: 20/9/38 | ||