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 tests on various fire extinguishers for 'S3' model vehicles.
| Identifier | ExFiles\Box 26\1\ Scan045 | |
| Date | 14th April 1964 | |
| To: GFY c: McF c: TBr. c: JPB c: Od. c: DP c: SF c: Dor{Mr Dorey}/FAL c: Nvl/GW c: Fire Chief. McF/VL.{V. Lewis / Mr Valentine} 1.JW. 14.4.64. 1100. FIRE EXTINGUISHER FOR 'S3' The fitting of a fire extinguisher in our cars has always been a problem owing to lack of available space, and as a result we fit today, at customers request, a very small extinguisher called the Bradex T.50, which contains Chlorobromomethane pressurized with carbon dioxide. Recently, we carried out tests on this extinguisher and compared it with others on the market, namely: Firemaster Cadet. containing Dry powder (modified sodium bicarbonate, pressurized with nitrogen) Firemaster FM.20 as above but larger. Pump type 1 pint size. containing Carbon Tetrachloride. Pyrene P.63 containing Bromochlorodifluoromethane. Our standard test is a fire produced by 1 pint of petrol poured over a scrap 6 cylinder block, which stands on a tray. This is ignited and allowed to burn for 5 seconds. The fire is then dealt with by one of our experienced firemen. The Bradex T.50 as fitted to our cars today, failed owing to lack of volume. There was some damping down effect but very little. The Firemaster Cadet failed owing to lack of volume and pressure. -Contd- | ||