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).
Cablegram reporting on comparative bearing tests between Allison and Derby parts, noting failure points and proposing further tests.
| Identifier | ExFiles\Box 173\1\ img162 | |
| Date | 14th February 1941 | |
| Form no. 6. WESTERN UNION (THE WESTERN UNION TELEGRAPH COMPANY) CABLEGRAM ANGLO-AMERICAN TELEGRAPH Co., Ld. CANADIAN NATIONAL TELEGRAPHS BIRMINGHAM, 1. BROAD ST.{Capt. P. R. Strong} CHAMBERS TELEPHONE CENTRAL 2954 TELEX CENTRAL 2954 DATED 2 AM 14 FEB 1941 CRRBM 43 INDIANAPOLIS INDIANA 63 1ST NLT HIVES ROYCAR DERBY - HIVES- MESSRS ROLLS ROYCE LD NIGHTINGALE RD DERBY COMPLETED TWENTY MINUTES RUNNING ALLISON BEARINGS AT THREE THOUSAND FIVE HUNDRED RPM BEFORE DISMANTLING BEARING CONDITION GOOD COMPARATIVE TEST DERBY BEARINGS FAILURE OCCURRED AFTER TWO AND HALF MINUTES AT THREE THOUSAND TWO HUNDRED FIFTY RPM TEMPERATURE REACHED TWO HUNDRED CENTIGRADE BEARING CONDITION POOR PROPOSE RUNNING FURTHER TEST ALLISON BEARINGS IF SATISFACTORY INCREASE SPEED TO ASCERTAIN MAXIMUM PERMISSIBLE RPM. COVERLEY | ||