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).
Comparing the performance of a Bijur clutch with a cork washer clutch under various conditions.
| Identifier | WestWitteringFiles\K\September1923\ Scan11 | |
| Date | 12th July 1923 | |
| R.B. 493A (40 H) (SL 42 12-7-23). J.H., D.{John DeLooze - Company Secretary} EXPERIMENTAL REPORT. Expl. No. 3592 REF: Wa{Mr Wallis}2/1/C5. 8.23. -2- Tests taken show that the Bijur clutch will creep. Comparative tests taken with cork washer for clutch under various conditions. | Test. | Dry cork. | Very oily. | Average condition. | |---|---|---|---| | Speed at which motor creeps if engine is chocked and starter engaged - standard conditions on the car. | 3 r.p.m. | 60 to 80 Too fast to take accurately. | 15 r.p.m. | | Amperes to cause clutch to just creep. | 260 amps. | 65 amps. | 100 amps. | We are sending to V.W. a Bijur Clutch fitted to a dummy armature shaft, also a suitable lever. By this means the action of the clutch can easily be observed. Hs.{Lord Ernest Hives - Chair} | ||