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).
Obtaining data from a servo brake.
| Identifier | ExFiles\Box 26\4\ Scan229 | |
| Date | 22th January 1924 | |
| R.R. 493 (40 H) (SL 42 12-7-23). J.H. D.{John DeLooze - Company Secretary} V2409 X719 EXPERIMENTAL REPORT. 9910 COPIES TO: R.CJ. BJ. WOR.{Arthur Wormald - General Works Manager} By.{R.W. Bailey - Chief Engineer} E.{Mr Elliott - Chief Engineer} Da.{Bernard Day - Chassis Design} EP.{G. Eric Platford - Chief Quality Engineer} PN.{Mr Northey} OY. Expl. No. S/409 REF. Hs{Lord Ernest Hives - Chair}1/LG22.1.24. OBJECT OF TEST. To obtain data on servo brake. TESTER. W. A.{Mr Adams} Robotham. CONDITIONS. Tests carried out on brake test rig. SUMMARY OF TEST. The results attached of tests taken on the rig are confirmed by road experience. We have recently re-lined a servo brake with new shoes and we found the proportion of braking to the rear greatly reduced - it was necessary to run with the brake on and to roast the material before it would give us the same results as previously. We are making a test with material in which we have baked all the bonding material out of it. We have recently removed the liners from two servo brakes which have been operating on a car - in both cases it shows definitely more wear on the wrapping shoe ( We are sending samples to R.{Sir Henry Royce} and WW.) We are testing a servo with cast-iron liners. Hs.{Lord Ernest Hives - Chair} | ||