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 brake distribution and leverages for the 'India' four-wheel brake system.
| Identifier | ExFiles\Box 5\3\ 03-page126 | |
| Date | 25th September 1924 | |
| R.R. 405A (New) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. Expl. No. X5940 REF.HS{Lord Ernest Hives - Chair}4/LG20.S.25. To R.{Sir Henry Royce} From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} c. to CJ. BJ. c. to RG.{Mr Rowledge} E.{Mr Elliott - Chief Engineer} c. to DA.{Bernard Day - Chassis Design} EY. c. to Wor.{Arthur Wormald - General Works Manager} S E C R E T. 'INDIA' FOUR WHEEL BRAKES. BRAKE DISTRIBUTION. X5940 Attached is a summary of the leverages and brake distribution of G.111. It will be observed on comparing them with those of the EAC, that the main difference is the greater servo leverage to the front on the 20 HP. car. It will be xxxxxxxxx remembered that it was considered necessary to cut down the leverage on the front xxxx brake on the EAC. owing to torsion of the front axle. Previously it was very much the same ratio as the present 20 HP. The effect of increased servo leverage to the front is an increase in total brake units available as the servo efficiency increases. It also only puts up the percentage of front braking. At present the direct pedal braking on G.111. is 20% less than the rear braking on G.11. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||