The use of a 14-tooth axle and exhaust popping on the New Phantom.
| Identifier | ExFiles\Box 66\4\ scan0333 | |
| Date | 17th March 1926 | |
| To Hs. {Lord Ernest Hives - Chair} from BJ. BJ4/H17.3.26. Use of 14-tooth Axle on Phantom. Popping in Exhaust of New Phantom(Codename for PHANTOM I). I attach a copy of a letter I have written to Mr. Rowledge in the hope that something can be arranged quickly with R. {Sir Henry Royce} on these two points. B.J. ENCL: BJ3/H17.3.26. Handwritten: X8350, X8230 | ||
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).