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).
Instructions for troubleshooting instrument drive cables and inspecting other H.T. cables for damage.
| Identifier | ExFiles\Box 168a\4\ img177 | |
| Date | 15th May 1940 | |
| -6- Rm{William Robotham - Chief Engineer}/RC.{R. Childs}8/JWe.15.5.40. -cont'd- speeds. It should be confirmed that no bend in the cable is at a radius of less than 12 inches. If the instrument indications are unsteady or there is noise, the drive cable should be withdrawn from the instrument and the instrument spindle rotated half a turn, and the end re-inserted. This may cure the trouble, since the square on the end of the drive will now face up with different faces of the square of the spindle and so may correct a slight machine error. Care should be taken to see that the felt washer on the instrument spindle is not left off. If the trouble persists, a new drive should be fitted. Generally speaking, no grease will be required, as the initial grease, given during manufacture, should last during the life of the drive. (3) Cables. Inspect all cables and see that they are not damaged in any way, also that all terminals are tight. Any H.T. cables, on which the rubber is cracked, should be replaced. Rm{William Robotham - Chief Engineer}/RC.{R. Childs} | ||