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).
Record of a telephone conversation regarding the electrical system for the Japan III Peregrine.
| Identifier | ExFiles\Box 62\3\ scan0271 | |
| Date | 21th December 1931 | |
| E.{Mr Elliott - Chief Engineer} c. HS.{Lord Ernest Hives - Chair} c. BY/SS.{S. Smith} c. BY/RD. X6005. BY.3/G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 21.12.31. (X6091 X6134 X6005) RECORD OF TELEPHONE CONVERSATION WITH WW. - 11. 12. 31. RE JAPAN III PEREGRINE - ELECTRICAL SYSTEM. STARTER MOTORS. It was agreed that we should make designs for the starter motors for both of the above chassis. J.III should be 4.5 outside. Peregrine between 3.625 and 3.750. On Japan III a larger pinion on the motor is arranged for, also the centre distance between the crankshaft and starter motor axes is fixed on one of the LeC's. The larger pinion is tucked away inside the motor as before, and since the outside diameter is not increased it means that the length of the starter motor carcass is to be increased as the windings will have to be clear of the end bearing, whereas before they were tucked into a recess between the outside diameter of the end bearing and the inside diamter of the carcass. The system which is to be adopted is the 40/50 scheme. The relay switch will remain the same, but the main switch may be slightly different. The push button switch would not be altered, as its duty would unquestionably be the same in each case. DYNAMO. On both chassis it is proposed to have a system foll-owing the Bosch i.e. a vibratory control working in conjunc-tion with an ordinary shunt wound dynamo. In the Bosch scheme there are two stages :- a/- A resistance is thrown into series with the fields. b/- The field is short circuited, and therefore the dynamo completely cutout. E.{Mr Elliott - Chief Engineer} wishes us to do what work we can in connection with this, and submit the designs to WW. for consideration. BY.{R.W. Bailey - Chief Engineer} | ||