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).
Faulty commutators on Bentley 60 & 80 Dynamos due to incorrect material usage.
| Identifier | ExFiles\Box 168a\3\ img020 | |
| Date | 2nd April 1940 | |
| Dynamo file 6142. To Rm{William Robotham - Chief Engineer}/RC{R. Childs}, c. Supt/Insp. [text crossed out] HPS{Horace Percy Smith - Experimental Factory Mgr}/RH.{R. Hollingworth}3/SW.2.4.40. Faulty Commutators. on Bentley 60 & 80 Dynamos. In reply to your memo Rm{William Robotham - Chief Engineer}/RC.{R. Childs}5/JH.30.3.40, with reference to failures of the latest fully driven dynamos, which you say is due to the fact that the commutators are wrongly built up with miconite instead of pure mica. You state that six machines are to be corrected, two of which can be completed to commence with. Will you please let us know where these machines are, and when we are likely to receive them? Also what are the part numbers you request us to book out from Slack Lane?. HPS{Horace Percy Smith - Experimental Factory Mgr}/RH.{R. Hollingworth} RH{R. Hollingworth}, | ||