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).
Potential trial of a 'Proteca motor' air filter, weighing its effectiveness against potential induction restriction.
| Identifier | ExFiles\Box 135\4\ scan0084 | |
| Date | 18th November 1924 | |
| TO HS.{Lord Ernest Hives - Chair} FROM DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} Copy to SG.{Arthur F. Sidgreaves - MD} [Strikethrough] [Handwritten] XC4128 DA{Bernard Day - Chassis Design}/EV{Ivan Evernden - coachwork}2/M18.11.24. [Handwritten] XC4128 We send herewith a letter from SG.{Arthur F. Sidgreaves - MD}, and some printed information concerning the "Proteca-motor". To filter the air prior to its induction is no new idea, and what we wonder is whether the filter is effective, and if so, whether it restricts the induction, also may not this fitting blow off if the engine mis-fires. If you think this is worth experimenting with would you kindly communicate with SG.{Arthur F. Sidgreaves - MD} who can obtain for you some parts. Unless we have any definite information against this fitting we think we might accept this opportunity of trying it. [Signature] DA{Bernard Day - Chassis Design}/EV{Ivan Evernden - coachwork} | ||