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 a five-blade fan with a 1.0/1 ratio drive and Ferogrip fan belt for the Phantom III chassis.
| Identifier | ExFiles\Box 171\5\ img043 | |
| Date | 1st June 1938 | |
| COMPLETED 21.9.38. LS RR 755 (10H) (49968) 19/10/37 C.E.Co. PHANTOM III STANDARDISATION OF PARTS Date Issued 1.6.38. Sheet No. P.30. Drg. PULLEY No. E.89341. L.O.P.S. FAN LOB E.89258. Description: FIVE BLADE FAN WITH 1.0/1 RATIO DRIVE WITH LATEST TYPE LARGE FEROGRIP FAN BELT. Purpose: To Improve Cooling and overcome traffic over-heating troubles. Brief Report and Remarks: Effect on cooling tested and reported on - see Rm{William Robotham - Chief Engineer}/Std.6/AP. 24.6.37. also drive durability reported on in Rm{William Robotham - Chief Engineer}/Std.8/MH.{M. Huckerby}22.12.37. Drive recommended for standardisation has minor improvements since writing last memo. above and will have completed necessary test bed endurance by the time it is ordered for production. Twelve sets of these fans, but fitted with the very much inferior British Goodrich belt in place of "Ferogrip" belt are in service in customers hands and so far no complaints have been reported (nearly one year service). When recommended for Introduction: E series chassis. Report References: Rm{William Robotham - Chief Engineer}/Std.6/AP.24.6.37. Rm{William Robotham - Chief Engineer}/Std.8/MH.{M. Huckerby}22.12.37. By: Rm{William Robotham - Chief Engineer}, Da{Bernard Day - Chassis Design}, Mx{John H Maddocks - Chief Proving Officer} BY: RM.{William Robotham - Chief Engineer}, DA.{Bernard Day - Chassis Design}, MX.{John H Maddocks - Chief Proving Officer} Old Parts: Material £0.11.1., Labour £0.4.2., Burden £0.7.3., Total £1.2.6. New Parts: Material £0.11.3., Labour £0.5.2., Burden £0.9.0., Total £1.5.5. Increase in Cost £0. 2. 11. G/Rf 22/6/38 Production Position and Comments: Cost of Tools £ 92.0.0d. 4.1.38. Five blade fan, to improve cooling, increases the Factory cost of chassis by 2/11d. and involves a tool cost of £92.0.0d. New fan can be introduced without scrap at the 79th chassis in 'E' series. As an alternative, introduction can be effected at the 1st. chassis in 'E' series, by scrapping existing parts, value £27.4.0d. RHC.{R. H. Coverley - Production Engineer} Authorisation to Proceed. Introduce on the 1 Chassis in E Series. Sg.{Arthur F. Sidgreaves - MD} Signature Date 20/9/38 Hs.{Lord Ernest Hives - Chair} Signature Date 20/9/38 | ||