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).
Incorrect resistance value in the regulator resistance unit for a Wraith.
| Identifier | ExFiles\Box 166\2\ img220 | |
| Date | 5th October 1938 | |
| 6092. By/RD. Rm{William Robotham - Chief Engineer}/RC.{R. Childs}17/JH.5.10.38. re regulator resistance unit for Wraith. We have examined one of the latest production units and find it has a resistance of 16 ohms instead of the specified 15 ohms. Investigating we find that it has been wound with 42 turns of wire, 40 turns of wire, as recommended in our report Rm{William Robotham - Chief Engineer}/RC.{R. Childs}7/MH.{M. Huckerby}18.11.37. will give the required 15 ohms. Rm{William Robotham - Chief Engineer}/RC.{R. Childs} | ||