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).
Issues and variations with the rear springing of the New Phantom 40/50 HP model.
| Identifier | ExFiles\Box 67a\1\ scan0051 | |
| Date | 5th January 1926 | |
| To BJ. from CWB. c.c. to FN. c. to H.{Arthur M. Hanbury - Head Complaints} c. to HS.{Lord Ernest Hives - Chair} c. to BY.{R.W. Bailey - Chief Engineer} X8440 W/HS.{Lord Ernest Hives - Chair} re:- NEW PHANTOMCodename for PHANTOM I - 40/50 HP. Rear Springing. Referring to BY11/H31.12.25 and dealing with the paragraphs of that memo seriatim. 1. It has not been suggested that any change has been made in the method of springing during the post-War period, but it is understood that a limit of camber of 1" under the final load test is permissible. As the rating of the rear springs is approximately 600 lbs. per inch this means that two springs with a difference in strength of 300 lbs. would both pass. A very great variation in the stiffness of the springing of all cars would therefore be apparent if they were all fitted with springs near to the stiffest possible limit or near to the lightest possible limit. 2. The inference which has been made was certainly not intended. There is ample explanation of the difference in the strength of springs which have been changed by differences in the load of passengers instructed and by arranging that the springs shall be towards the lighter possible limit. Many cases have undoubtedly occurred of which, if necessary, examples can be given in which springs have been changed to others of reduced strength when there has been no alteration of the loads from those originally given. 4. Although on 11.12.25 only 14 sets of springs had been changed, this does not mean that these are the only ones which are not giving complete satisfaction. Many owners are undoubtedly suffering from this complaint and have not yet complained. Probably we are not within 75% of giving complete satisfaction in this question of springing of the 40/50. 5. This is not a question for me to enter into, but I understand that R.{Sir Henry Royce} has recently complained of the springing of his car, of which no doubt there are accurate weights. Contd. | ||