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).
The failure of original EAC 4-bladed sheetmetal fans due to the set in the blades.
| Identifier | Morton\M3.5\ img001 | |
| Date | 1st April 1925 | |
| R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. REF: Hs{Lord Ernest Hives - Chair}6/LGJ.4.25. To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CO. EY. c. to RJ. V c. to DA.{Bernard Day - Chassis Design} W c. to WOT. S E C R E T. EAC. FAN. X8220 We have had several of the original EAC, 4-bladed sheetmetal fans break. The blades break through the top rivet of the stiffening centre piece. It is thought that the cause of the failure is due to the set in the plates blades. It is not intended to use any of these fans on the car. The latest fans have not so much set on the blades. The blade is better for taking tension stresses. The car which has just completed 10,000 miles in France was fitted with the latest type fan. Hs.{Lord Ernest Hives - Chair} | ||