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).
Modifications to the direct four-wheel braking system for standardization purposes.
| Identifier | ExFiles\Box 84\2\ scan0178 | |
| Date | 20th September 1934 | |
| 4206 To By.{R.W. Bailey - Chief Engineer} c. to RHC.{R. H. Coverley - Production Engineer} Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}25/KW.20.9.34. Direct Braking to all four Wheels. This scheme of brakes fitted to 5-B-IV will run 10,000 miles in France with a view to standardisation. The modifications we have made from N.Sch.3879 are - (1) Front equaliser lever to ropes altered from 1.645 to 2.700 CTS.{C. Trot Salt - Carburation} (2) Rear equaliser going away levers altered from 1.815 to 2.400 CTS.{C. Trot Salt - Carburation} (3) The plate lever can be 1.800 as now standard instead of 1.750. (4) 30° servo cams EX.14217 replace the 42° cams to G.56681/2. Will you please give these parts Piece Numbers and incorporate them in the LOP and any arrangement drawings. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls} | ||