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).
Design changes for front axle control, specifically regarding the adoption of radius rods over torque arms with semi-elliptic springs.
| Identifier | ExFiles\Box 182\M20\M20.1\ img042 | |
| Date | 1st May 1924 | |
| R.R. 235A (100 T) (S.H 159 11-8-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2800 ORIGINAL TO HS.{Lord Ernest Hives - Chair} FROM R.{Sir Henry Royce} Copy to - CJ. " RG.{Mr Rowledge} " DA.{Bernard Day - Chassis Design} " E.{Mr Elliott - Chief Engineer} re. FRONT AXLE CONTROL. Handwritten: X9940, X9420, X9421 It will be noticed that this matter is not as urgent now we have decided to adopt less fierce front wheel braking. At the same time the matter is receiving all the attention we can give it. We have already found that any form of torque arm with semi-elliptic springs fitted in the ordinary way does not seem satisfactory owing to the excessive stress put on the front end of the spring during the bump and rebound, etc. It is suggested that either the springing should be considerably modified or that the parallel control arrangement with single or double radius rods is necessary. Studies of this work are still in hand. If however Derby have any suggestions to make we shall naturally be pleased to receive them, as we think at the moment the only really satisfactory way is to put on radius rods or completely modify the front springing. We do not think the radius rods are very seriously objectionable as they have behaved well in other parts of other cars as well as our earlier RR. cars. R.{Sir Henry Royce} | ||