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).
Test results document for front axle torsion under braking forces on two different models.
| Identifier | ExFiles\Box 67\2\ scan0148 | |
| Date | 19th May 1925 | |
| +8480 Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}/LG19.5.25. FRONT AXLE TORSION. X5470 Tests made by pulling brakes on by means of brake ropes, and a hold fast attached to the frame. The car is then pulled forward until the wheels just slide and the pivot lean measured. EAC. (98-NK) FRONT AXLE WT. 1 ton. 2 cwts. Pivot. Normal lean. Lean under torsion. O.S. .125 back. .475 forward. N.S. .080 back. .440 forward. G.111. FRONT AXLE WT. .685 tons. N.S. .156 back. .235 forward. O.S. .215 back. .215 forward. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||