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).
Tests conducted on a servo brake, including material and lining analysis.
| Identifier | WestWitteringFiles\L\2Jan1924-March1924\ Scan10 | |
| Date | 22th January 1924 | |
| R.R. 493 (40 H) (SL 42 12-7-23). J.H. D.{John DeLooze - Company Secretary} ORIGINAL EXPERIMENTAL REPORT. COPIES TO: (R)CJ. BJ. WOR{Arthur Wormald - General Works Manager}, (By.{R.W. Bailey - Chief Engineer})E, Da{Bernard Day - Chassis Design}, ER. PN.{Mr Northey} OY. (RB{R. Bowen}) Expl. No. x9910 3409 3010 REF. Hsl/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} | ||