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).
Specifications and test details for a high-speed blower, discussing performance, weight, and potential applications.
| Identifier | ExFiles\Box 140\1\ scan0231 | |
| Date | 27th September 1938 guessed | |
| - 2 - Bearings are of high speed ball type and seals are by means of labyrinths, nine altogether, each having three rings. We were told that with a gear of 1 1/3/1 on a 1087 cc engine a boost of 40-45 lb/sq.in. was obtained at 4000 R.P.M. It also showed 5 lb/sq.in. at 300 R.P.M. The maximum drive speed to date was 9000 R.P.M. (18000 on side shafts) but they expected to reach 13000 R.P.M. The calibration of the blower on a car was very permanent, unlike the Zoller. It was hoped to have it running at Donnington on Oct.1st.; but it had to go to Ricardo's for test in the meantime. Total weight was 32 lbs., but special attention had not been given to lightness. They would like us to put a definite case for fulfilment to them, aero or car; they thought they could gone within our weight requirements. If we were not interested they thought of approaching Bristols. LP{Mr Lappin}/Aln. | ||