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 20 HP timing gears, stating the moveable idler wheel design has not yet been approved.
| Identifier | ExFiles\Box 75\5\ scan0034 | |
| Date | 16th August 1927 | |
| To Hs.{Lord Ernest Hives - Chair} from E.{Mr Elliott - Chief Engineer} c. to BJ. BY.{R.W. Bailey - Chief Engineer} X4569 E2/M16.8.27. 20 HP. TIMING GEARS. X.4230 X.4569 X.3942 In response to your memo. Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}4/LG11.8.27., the actual design of the 20 HP. moveable idler wheel has never yet been approved, although the principle is conceded, being the same as we used on the larger engine. R.{Sir Henry Royce} has decided that this alteration will ve dealt with when we modify the engine in other respects, so as to make a clean sweep of the whole job. E.{Mr Elliott - Chief Engineer} | ||