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).
Photograph of a fractured Borg & Beck clutch pressure plate after an endurance test.
| Identifier | ExFiles\Box 85\2\ scan0226 | |
| Date | 16th December 1935 | |
| 16/12/35 B14 UNIT BORG & BECK CLUTCH PRESSURE PLATE AFTER 95 HOURS TEST BED ENDURANCE 30 MINS. @ 4000, 25 MINS. @ 4250, 5 MINS. @ 4500 R.P.M. Text cast on part: BORG & BECK, L.TR.{Capt. F. W. Turner - Finance}, DA{Bernard Day - Chassis Design}, CY, LEAMINGTON SPA ENG., PAT. NO. | ||