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).
Springing arrangements for the New Phantom chassis.
Identifier | ExFiles\Box 67a\1\ scan0078 | |
Date | 24th February 1926 | |
48410 F.H. CWD. E.W.H. C. HS.{Lord Ernest Hives - Chair} BYS/H.{Arthur M. Hanbury - Head Complaints} 24.2.26. NEW PHANTOMCodename for PHANTOM I SPRINGING. ******************** Referring to CJE/E.18.2.26, we have for some weeks past been arranging lighter springs on chassis than are demanded by the instructions we receive as fixed by:- a/- Estimated body weights supplied by coachbuilders. b/- Passengers specified. c/- Luggage. The scheme we are working upon is to spring for:- a/- The least body weight of the two usually quoted. b/- Never more than four passengers. c/- Half luggage specified. After fixing the total weight to be carried by rear springs on this reduced scale described above, we then take approximately only 70% of this reduced load as the weight to be carried. The foregoing scheme will of course consider ably reduce axle clearances if and when full loads are carried, and will also result in the car hitting the buffers very frequently under full load and bad road conditions. 121-MC for CJ., however, has been sprung as above and still does not come up to your requirements. If we are to go further than the above, we will have to increase our initial cambers in order to maintain anything like reasonable clearances, which will result in a further increase of stress, and if it is desired to put this into practice, then it will be necessary for W.W. to go into the matter and issue their recommendations in this connection, and a standardisation sheet for springs arranged in this manner must be issued, as we shall have Contd. | ||