Alteration to the 4-wheel brake servo spring arrangement for the Phantom & India models.
| Identifier | WestWitteringFiles\N\October1925-December1925\ Scan55 | |
| Date | 24th October 1925 | |
| R.R. 235A (100 T) (S.H. 159. 11-8-20) G. {Mr Griffiths - Chief Accountant / Mr Gnapp} 2800 TO HS. {Lord Ernest Hives - Chair} FROM R. {Sir Henry Royce} Copy to - C.L. BY. {R.W. Bailey - Chief Engineer} DA. {Bernard Day - Chassis Design} 4 WHEEL BRAKES - PHANTOM & INDIA(Production 20 HP. with 4-speed box and Front Wheel Brakes). I have suggested that it is possible you will find an improvement in altering the arrangement of springs so that the servo has a direct pull backwards at a spring of about half the hold off springs on the front axle. This should considerably reduce the friction required at the suspension of the floating lever. DA. {Bernard Day - Chassis Design} is sending you the particulars I have suggested should be tested. We will go over the Phantom arrangement to see how the friction on this suspension link can be improved. FHR R. {Sir Henry Royce} Handwritten notes: X8420 X5940 | ||
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).