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).
Specifications and suitability of a Lucas Dynamo.
| Identifier | ExFiles\Box 48\3\ Scan110 | |
| Date | 14th January 1920 | |
| X 4211 From PN.{Mr Northey} to BJ. c. to R.{Sir Henry Royce} c. to CJ. c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to Bn.{W.O. Bentley / Mr Barrington} c. to Hs.{Lord Ernest Hives - Chair} c. to EP.{G. Eric Platford - Chief Quality Engineer} PN{Mr Northey}11/DB{Donald Bastow - Suspensions}14.1.20. X.4060. LUCAS DYNAMO. X.664. X.4211. to R.{Sir Henry Royce} With regard to the attached Memo, from Ck{Mr Clark} The movement to obtain a machine which shall be capable of cutting in at a lower engine speed is one which I have urged very strongly, and I am glad to note that LUCAS see their way to producing something more useful for our purpose. I quite agree that the machine suggested, having an output of 10 amperes at normal speed and cutting in at 525 R.P.M. might appear to be the best arrangement, the machine previously referred to capable of cutting in at 325 R.P.M. and giving an output of only 8 amperes being, in my opinion not so desirable. I see that Mr. Clark refers to the likelihood of our using a battery of still smaller capacity than at present, and therefore justifying the use of lower charging rate from the dynamo, as set out in a previous memo, by me, I trust this is not at all likely to eventuate. The battery capacity is already too small. The additional weight of the Lucas dynamo, which apparently will weight 39 lbs. is not a very serious consideration - the present one weighing 36 lbs. Contd. | ||