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).
The specifications for special bedded rear springs for a trials car.
| Identifier | ExFiles\Box 71\3\ scan0232 | |
| Date | 17th April 1920 | |
| Hs.{Lord Ernest Hives - Chair} from EP.{G. Eric Platford - Chief Quality Engineer} X3922 EP{G. Eric Platford - Chief Quality Engineer}9/F17.4.20. F.R. FR / 1 RE. SPECIAL BEDDED REAR SPRINGS FOR PN{Mr Northey}'S OPEN TRIALS CAR - 19-LW. X3922 <2628> With reference to our discussion on the above, I attach copy of memo. I have to-day sent to PN{Mr Northey} with reference to this car. Will you please arrange, as promised, for a set of springs to be prepared, strengths as follows, so that we can supply or fix to the car as soon as we hear from PN.{Mr Northey} Drg. No. F.5681. REAR NEAR:- Thickness over all | Initial un-loaded camber | Normal load camber | Load for normal camber | Length "L" at normal load camber | Full load camber. 2.125 | 2.9375 | Flat | 1828 lbs. | 53" | .975 neg. REAR OFF:- Drg. No.F.5681. 2.5 | 3" | Flat | 1925 lbs. | 53" | .975" neg. EP.{G. Eric Platford - Chief Quality Engineer} R.R. 235 A (100 T/S) F.{Mr Friese} 846. 6 S 19 G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2460. | ||