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).
Comparative cooling efficiency tests on new louvred bonnets for the Phantom model.
| Identifier | ExFiles\Box 66\3\ scan0118 | |
| Date | 1st February 1926 | |
| To R.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. to CJ. BJ. c. to RG.{Mr Rowledge} E.{Mr Elliott - Chief Engineer} c. to DA.{Bernard Day - Chassis Design} EY. c. to Wor.{Arthur Wormald - General Works Manager} X8260 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}1/LG4. 2. 26. PHANTOM - LOUVRED BONNETS. We have carried out careful comparative cooling efficiency tests with the new type louvres to N.sch.2064 and standard bonnet shutters. The tests were carried out on a Phantom car under normal hill climbing conditions. The results shew that the new type louvres are slightly superior (2%) to the standard shutters in cooling efficiency at speeds round about 30 m.p.h. We could not observe any difference between the efficiency of the new type louvres and the louvres which were objected to on the score of ugliness. We suggest a louvre of the modified design should be instructed for 20 HP. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||