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).
Standardisation of C.M.3 copper morganite brushes for the starter motor.
| Identifier | ExFiles\Box 35\1\ scan 072 | |
| Date | 23th April 1920 | |
| R.R. 755 (5 H) (S.A. 225. 25-2-15) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 0981. X.2656. STANDARDISATION of CHASSIS PARTS. Date 23.4.20 Description of Parts. C.M.3 copper morganite brushes for starter motor. X 2656. Drawing No. G.3901. Part List. E.13734/5. Origin. The desirability of using a brush containing a larger graphite and smaller copper content than the present C.M. quality (which was the most suitable of those originally available). Experimental Test Report. EFC/AT22.4.20. attached. Road Test Report. HS{Lord Ernest Hives - Chair}6/LG20.4.20. The starter motor equipment gave no trouble during the whole of the run on 10,000 mile car. The commutator and brushes appeared to be in excellent condition. We recommend that the C.M.3 brushes are adopted as standard. The S.motor has not been lubricated during the run or touched in any way. Signature of Exp. Dept. that above is correct. Weight of Old Part. --- Cost of Old Part. £ ----- Weight of New Part. --- Cost of New Part. £ --- Difference per Car. --- Difference per Car. £ ------ Cost of Parts in Works and Stores which will be scrapped if commenced on:- Series..........£.......... Series..........£.......... Series..........£.......... Storekeeper advised re above. Storekeeper's Signature. Signature of Mr. DeLOOZE that above is correct. SIGNATURES | DATE | REMARKS Mr. JOHNSON. | 13.5.20. | C.Johnson. agreed. Mr. ROYCE. | 19-5-20 | Agreed FHR Mr. WORMALD. | 5.5.20. | Agreed.Wor.{Arthur Wormald - General Works Manager} Mr. NADIN | (Absent in U.S.A.). Mr. PLATFORD. | 23.4.20 | Agreed. EP.{G. Eric Platford - Chief Quality Engineer} Mr. NORTHEY. | 7.5.20 | Agreed. FN. Mr. Barrington. | 23.4.20 | agreed. Bn{W.O. Bentley / Mr Barrington} Mr. Bailey. | 23.4.20 | Agreed. By.{R.W. Bailey - Chief Engineer} Mr. Day. | 24.4.20 | Agreed. Da.{Bernard Day - Chassis Design} | ||