Calculation sheet for vehicle moment of inertia, weight distribution, and unsprung mass.
| Identifier | ExFiles\Box 9\5\ 05-page247 | |
| Date | 10th July 1939 | |
| Rm {William Robotham - Chief Engineer} /HFP.2/MH. {M. Huckerby} 10.7.39. AXIS ABOUT WHICH MOMENT OF INERTIA WAS MEASURED FRONT REAR CG A 9.9" 4.5" 9" 14" 67 1/2" 66 3/4" 2182 LBS 4436 LBS 2254 LBS Moment of Inertia about A - 108,900 lb.ft2 Moment of Inertia about Centre of Gravity - 88,000 lb.ft2 Inertia of Wheels - 41.85 lb/ft2 Weight of Unsprung mass including wheels - Front - 135 lbs. per wheel. Rear - 215 lbs. per wheel. Front 270 lbs. total. Rear 430 lbs. total. Rm {William Robotham - Chief Engineer} /HFP. | ||
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).