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).
Recommendation for S.S. road spring percentages and material for the next 50 sets.
| Identifier | ExFiles\Box 16\7\ Scan174 | |
| Date | 14th May 1929 | |
| Y7410 To ROY.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. to BY.{R.W. Bailey - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}2/LG14.5.29. S.S. ROAD SPRINGS. With reference to ROY{Sir Henry Royce}12/MG13.5.29. Further experience with the S.S. XXXX cars leads us to recommend the following spring percentages for the next 50 sets of S.S. material : Front 12 - 1000 lbs. 20 - 1050 lbs. 68 - 1100 lbs. Rear 8 - 1100 lbs. 18 - 1200 lbs. 66 - 1300 lbs. 8 - 1400 lbs. -------------------- Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||