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).
Corrosion issues with the recoil springs for the Bren gun.
| Identifier | ExFiles\Box 170\4\ img002 | |
| Date | 22th March 1940 | |
| Serial No. 36 OY 8/D/Mar.22.40 Oy ROLLS-ROYCE INC. ROOM 2-261 GENERAL MOTORS BUILDING DETROIT, MICHIGAN TELEPHONES TRINITY 2-1135 & 2-1136 B By what do you think of this practice for the purpose. It helped us on car road springs (Rm{William Robotham - Chief Engineer}) c. sent to Ry March 22, 1940 Rolls-Royce, Ltd. Derby, England Springs Rm.{William Robotham - Chief Engineer} A thing which might be useful. Zimmerli said he was called to Canada to deal with trouble on the recoil springs of the Bren gun. Springs are being made in Barnes-Gibson-Raymond Canadian plant at Hamilton, Ontario. The authorities would not show him the gun because he is an American citizen, which amused him because he had already seen it in Czecho-Slovakia and in the States. Stress range is high but he thinks is not the cause of trouble. He suspects that gas leakage back from the cartridge causes corrosion. Recommended making springs of 18-8 stainless wire, which he feels sure would solve the trouble. Was not allowed to do this because it was "contrary to specifications". Is plating the springs and hoping to save them from corrosion this way well enough to stand up to the expectancy of 50,000 rounds. OY Oy | ||