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).
Ride comfort differences between split leaf and solid leaf springs on a 40/50 chassis.
| Identifier | ExFiles\Box 80\2\ scan0184 | |
| Date | 30th July 1920 | |
| To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. c. to Bn.{W.O. Bentley / Mr Barrington} c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to By.{R.W. Bailey - Chief Engineer} c. to EP.{G. Eric Platford - Chief Quality Engineer} x.2628b Hs{Lord Ernest Hives - Chair}6/LG30.7.20. X.2628b. RE SPRINGING OF 40/50 CHASSIS. X.3923. X.3981. We should very much like you to try 6.EX Car again when you are in Norfolk especially over roads you have run with 1.EX Car. Since we have had 6.EX Car back here we have changed the springs from the solid leaf to the split leaf again and we find that the changing over from the split to the solid leaf does not show any outstanding difference in the riding of the car. One has to be very critical to pick it out. We have found that the reason 6.EX Car gave such a bad impression as regards the springing when it was at West WitteringHenry Royce's home town, was due to the fact that the tyres were abnormally hard. The tyres were pumped up to about 85 lbs. pressure. It is quite astonishing the difference than we can make with the changing over from split to solid springs. Mr. Platford is now in the process of changing over a lot of the cars from split to solid springs. He agrees that the difference is only slight and is more than swamped by the condition of the tyres. We quite agree that we should persevere to try and introduce some lateral flexibility in the springs but we are very anxious to correct the impression you obtained on 6.EX Car that there was a tremendous difference between the comfort with split and solid springs. Contd. R.R. 285A (100 T) (S.G. 648. 19-2-20) G 2618 | ||