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).
Amendment to the production specification for a Bentley starter motor fitted to a 20/25 chassis.
| Identifier | ExFiles\Box 62\1\ scan0244 | |
| Date | 27th April 1934 | |
| X 6134 To By.{R.W. Bailey - Chief Engineer} c. to Sft{Mr Swift}/Mr.Brock. Hs{Lord Ernest Hives - Chair}/Wst.17/KW.27.4.34. Bentley Starter Motor fitted to 20/25 Chassis. In view of the fact that the Bentley type of starter motor to R.R.Scheme 399 is now being fitted to the 20/25, the production specification limits will have to be slightly amended in view of the different flywheel gear ratio. Therefore for the new motor arranged to work with the standard 20/25 gear of 8.43:1, the figures for the load test as given on page 2 of the existing Bentley starter motor specification dated 16.11.33. Should be amended to read - "42 to 43.5 lb.in. for the torque and minimum speed to be 1500 R.P.M." Hs{Lord Ernest Hives - Chair}/Wst. | ||