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).
Instruction to test if a radiator fan with three blades performs as well as one with six on the 40/50 HP model.
| Identifier | ExFiles\Box 75\3\ scan0161 | |
| Date | 5th June 1919 | |
| X.3576 (X 4237) To EH. from R.{Sir Henry Royce} c. t- CJ. c. to Bn.{W.O. Bentley / Mr Barrington} c. to Da.{Bernard Day - Chassis Design} c. to EFC. E8/G.5.6.19. X.3438 - RADIATOR FANS. X.3438. X.3576. In accordance with Mr. Royce's instructions would you please make a test to see if the 40/50 H.P. Rad- iator Fan will do as well with three blades as with six. It is contemplated using a three-bladed fan for the 20 H.P. chassis. E.{Mr Elliott - Chief Engineer} | ||