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).
Graph comparing the power absorbed and B.M.E.P. for various cooling fans at different RPM.
| Identifier | ExFiles\Box 86\5\ scan0004 | |
| Date | 18th September 1933 | |
| COMPARISON OF POWER ABSORBED BY VARIOUS COOLING FANS. UNIT 1 B IV BENTLEY RADIATOR & BONNET RIGGED UP OVER ENGINE. REAR END OF BONNET BLANKED TO REPRESENT DASHBOARD. TEST BED EXHAUST SYSTEM. NO FAN CHRYSLER FAN PEREGRINE FAN STANDARD 20/25 FAN P.H.P. B.M.E.P. R.P.M. ARLH (18-9-33) | ||