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 to prevent mud from getting onto front brakes.
| Identifier | WestWitteringFiles\O\2January1926-March1926\ Scan56 | |
| Date | 3rd February 1926 | |
| R.R. 493 (40 H) (SL 42 12-7-23). J.H., D.{John DeLooze - Company Secretary} ORIGINAL EXPERIMENTAL REPORT. COPIES TO: RCJ BJ WOR.{Arthur Wormald - General Works Manager} By E Da{Bernard Day - Chassis Design} RG{Mr Rowledge} Expl. No. 5940 REF. Hs{Lord Ernest Hives - Chair}1/LG3.2.26 OBJECT OF TEST. To prevent mud getting on to front brakes. TESTER. A.J.LIDSEY CONDITIONS. Road tests on 9-G-111. SUMMARY OF TEST. On the 10,000 miles test on 4-wheel brakes on 20 HP. it was found that considerable quantities of mud got on to the brakes. The effect of mud getting on to the brakes is to increase wear, cause squeaks and effect the co-efficient of friction of the material. We have recently had a Barkers trials 20 HP. car returned to the Works with bad front brake jaggers. This fault was caused by the effectiveness of the front brakes being considerably increased due to the dried mud on the braking surfaces. The fault disappeared after the brakes had been cleaned. As the modification to overcome this complaint is very simple we recommend it is standardised at once. Hs.{Lord Ernest Hives - Chair} | ||