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).
Diagram and list of vehicle dynamics measurements, including moment of inertia and spring rates.
| Identifier | ExFiles\Box 98\4\ scan0120 | |
| Date | 20th July 1939 | |
| Rm{William Robotham - Chief Engineer}/HFP.3/MH.{M. Huckerby}20.7.39. Axis about Moment of Inertia was measured CG 8.35" 14" 7" A 33" 64¼" 59¾" 1893 lbs 3922 lbs 2029 lbs Moment of Inertia about A 97,100 lbs.ft² Moment of Inertia about Centre of Gravity 71,300 lb.ft² Inertia of wheels 41.85 lb.ft² per wheel. Unsprung mass including wheels - front 260 lbs. total. rear 410 lbs. total. Spring Rates measured at wheel - Front N.S. 130 lbs/inch. O.S. 135 lbs/inch. Rear N.S. 150 lbs/inch. O.S. 155 lbs/inch. | ||