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).
Technical report providing feedback and suggestions on the electrical system, including battery terminals, klaxon, and wiring conduits.
| Identifier | ExFiles\Box 45\3\ Scan196 | |
| Date | 10th October 1922 | |
| ( 2 ) EP{G. Eric Platford - Chief Quality Engineer}11/H10.10.22. 5. BATTERY TERMINALS. Do not like this type of terminal Not quite positive enough, have known trouble with this type working loose. Do not like the tinned steel bolts and nuts used for locking up inside the box with acid fumes. Would suggest that the wires be carried into box at end instead of at the propellor tube side, which brings things rather too close. Do not think junction box on battery box necessary, with the extract joints which may give trouble. The frame earthing terminal we would suggest should have more area and be made with large tinned brass washers sweated to frame when new, and so prevent oxidization or rust. 6. KLAXON PUSH. Some locking device for small terminal nuts in push required. Would suggest a Bakelite bush in the bottom end of control tube and means of fixing same, as copper ones fitted drop out and wires chafe on rough edge. Bushes required in front end of conduits where lamp wires lead out, also a bush in frame where side lamp wires pass through frame into the adaptors. No provision made for water to drain out of conduits which will get in through several openings and perhaps condensation, and then the wires would lie in water at the lowest places of the tubes. We do not see why the wires and casings need be taken up engine side of dash, as this makes several nasty bends and extra castings, also makes the replacement of wires more difficult. [STAMP: RECEIVED 13 OCT 1922] The conduit system appears very heavy and we would think it makes replacements of faulty wires etc. very difficult, as it appears to be fitted into the chassis before engine etc. and the car built around it, which is just the reverse of the 40/50 Job. We should think that the electrical installation should be the last thing to be put on the chassis, so as to be accessible in case of trouble. The terminal on the L.T. wire at distributor we would suggest should have some form of support; perhaps an ebonite sleeve as on 40/50 chassis for the cable, as the job is very weak just where soldered to terminal, and it gets a lot of handling. We would suggest some form of sleeving be fitted to lamp wires at front where they leave the conduits. We suggest that the insulation of the job when finished should be tested with the 200 V.A.C. off the main, through a lamp, also again after final test to prove O.K. EP.{G. Eric Platford - Chief Quality Engineer} | ||