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).
Request for a report comparing the cooling effects of shuttered versus louvered bonnets.
| Identifier | ExFiles\Box 119\3\ scan0021 | |
| Date | 4th November 1913 | |
| Wor{Arthur Wormald - General Works Manager}/SM11/L41113. Re Bonnet Ventilation. X.551085 Pd 4-11-13. for Bullamore. We understand that chassis 1926 was fitted with a shuttered Bonnet. Mr Johnson wishes us to obtain for him some information concerning the comparison between a shuttered bonnet and a louvred bonnet as regards cooling the engine, and we shall be glad if you will issue a report based on your own observation in using the above. p. Wor.{Arthur Wormald - General Works Manager} | ||