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).
Requesting to fit specific front and rear springs to chassis 23-EX, detailing the required poundage after treatment.
| Identifier | ExFiles\Box 16\7\ Scan170 | |
| Date | 1st April 1929 | |
| To RHC.{R. H. Coverley - Production Engineer} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} X7410 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}3/LG23. 4. 29. X1360 Will you please arrange to fit the following springs to 23-EX :- Front 950 lbs. Rear 1200 lbs. These loadings should be obtained at the normal deflection after the spring has been cadmium plated and drilled for lubrication. We should like you to keep a record of the poundage which the springs give at normal deflection as they come from the makers and after you have polished, cadmium plated and drilled them for lubrication. We believe the alteration in the load will be about 10%, it is therefore important that in the car specification the spring poundage given should be the final poundage of the finished spring. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||