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).
Use of Norma Hoffmann S.7 and US.7 self-aligning ball bearings for Merlin engines.
| Identifier | ExFiles\Box 115\2\ scan0616 | |
| Date | 2nd January 1941 | |
| HPS{Horace Percy Smith - Experimental Factory Mgr}/RS.{Sir Henry Royce's Secretary} c to Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} c to Rm.{William Robotham - Chief Engineer} c to Lov{Mr Lovesey}/LBH.{Mr Hall - Aero Design Engineer} c to Psn...Glasgow. c to JM{Mr Morley}/LS...Crewe. BY/SB.{Mr Bull/Mr Bannister}4/ML.2.1.41. re NORMA HOFFMANN BALL BEARINGS. Merlin Engines. -------------------- With reference to your HPS{Horace Percy Smith - Experimental Factory Mgr}/RS.{Sir Henry Royce's Secretary}4/JW.20.12.40., Hs{Lord Ernest Hives - Chair}/GB. has discussed the question of the S.7 bearings with E.{Mr Elliott - Chief Engineer} and it would appear that it is essential to use the US.7 self-aligning type of bearings. America had not been advised of the change in accordance with DES.9074. The question of the disposal of S.7 bearing is being looked into to see whether they can be used anywhere else. BY/SB.{Mr Bull/Mr Bannister} | ||