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).
Listing the moment of inertia for various wheel and tyre combinations related to high-speed wobbles.
| Identifier | ExFiles\Box 29\1\ Scan267 | |
| Date | 26th November 1926 | |
| X457 26.11.26 HIGH SPEED WOBBLES. +4050 / x8725 I of 6.75 tyre and tube - 70.4 lbs.ft.units. I of 6.00" tyre and heavy tube - 78.4 lbs.ft.units. I of disc and steel rim and wheel - 58.6 lbs.ft.units. I of disc and wheel - 33.5 lbs. ft. units. I of wheel alone - 17.4 lbs.ft.units. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||