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).
The design and performance of various automotive electrical components, including the distribution board, horn, starter motor, and switches.
| Identifier | WestWitteringFiles\W\May1931-August1931\ Scan039 | |
| Date | 30th May 1931 | |
| Hsl/AT30.5.31 contd. -3- Distribution Board. The question of simplifying this unit has been discussed with E.{Mr Elliott - Chief Engineer} The general practice now is to use the glass cartridge type fuses and as we are using one of this type for the field circuit of the dynamo we suggest it might be better if we adopt these generally. For consideration, we put forward the suggestion that it might be better to have a separate fuse for each head lamp to prevent complete black out in case of failure and to put the ignition and starter motor switches under one fuse. Horn. We have a number of buzzer type horns to test against the Klaxon. We can save at least 25/- per car by using a buzzer type. We are hoping to get one of these standardised in the near future. Starter Motor. Our present P.2. sequence starter has given reasonable satisfaction in service. One of the troubles we had this winter was sluggish action due to excess oil from the central lubrication supply. We consider it is always going to be a difficult matter to adjust this to give the right quantity and we are carrying out tests by using self-lubricating bushes with the oil supply dis-connected. We have had one or two cases where water and mud got into the starter motor. We are looking into the question of where the water gets in and will make suggestions of how this might be overcome. With regard to the 25 HP. motor, at the present time we are near the limit of the friction clutch. Starter Switches. A promising experiment with P.2. automatic starter switch is to delete the teazer circuit carbon contacts. This can be done without producing undue sparking at the contacts by allowing the operation of the main switch to slightly overlap the operation of the breaking of the teazer circuit. This scheme will also reduce the amount of sparking at the push button switch and may enable us to delete the carbons on that switch. We are proposing to fit this scheme on to 25-EX. Lec.2804 for reducing sparking at the main switch contacts is going on satisfactorily and is being standardised. HE/H.L.West. | ||