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).
The standardisation of the low inertia slipper wheel for the Phantom II.
| Identifier | ExFiles\Box 137\4\ scan0041 | |
| Date | 5th November 1929 | |
| X634 64WJ HS{Lord Ernest Hives - Chair} To Hs.{Lord Ernest Hives - Chair} from Sg.{Arthur F. Sidgreaves - MD} re Phantom II. Slipper Wheel. Sg{Arthur F. Sidgreaves - MD}11/E5.11.29 Copy to WEP. Referring to our conversation at Derby last week regarding the above, would you please let me know what the actual position is in regard to the standardisation sheet for the modified type which I think is described as the low inertia. I think you said it had already done 10,000 miles test. Perhaps you will confirm this. I should also be glad if you would let me know when it is proposed to introduce it on production. I take it that this is the same device which some few weeks ago I gave authority to be fitted to one or two particular chassis such as one of our own cars DR, say, Malcolm Campbell's. Sg.{Arthur F. Sidgreaves - MD} | ||