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 a 40/50 HP. Dynamo - 28 Slot Armature.
| Identifier | ExFiles\Box 172\3\ img114 | |
| Date | 20th July 1928 | |
| RR 785 REVISED (10H) (D.C. 777-29-2-28) MC C.L. COMPLETED 2.10.28 STANDARDISATION of CHASSIS PARTS. Date 20.7.28 X No. 8672 Description of Parts. 40/50 HP. DYNAMO - 28 SLOT ARMATURE. Origin. Further improvement to the silence and commutation of the machine. Experimental Test Report. As previously reported we are practically free from magnetic noise with the present standard 29 slot armature used with the narrower brush, larger air gap machine. Tests shew however that a further small improvement is realised by the use of a 28 slot armature, the appearance of which, compared with standard is the same. The use of this armature cured Test Dept. cases of magnetic noise on the old type. Road Test Report. Run 7211 miles on 12-EX. " 5806 " " 9-EX. brush machine. It is considered unnecessary to complete 10,000 miles on the machine before standardisation is effected. Drawing No. Part List A Scrap and replace at all costs, including Chassis already delivered to Customers. B Scrap and replace on Chassis in Works. C Scrap present stock and replace on all Chassis not yet handed to test. D Use existing stock Alteration effective on future Chassis. Weight of Old Part. Cost of Old Part. £ 4. 4. 6 Weight of New Part. Cost of New Part. £ 4. 4. 6 Wor.{Arthur Wormald - General Works Manager} Difference per Car. Difference per Car. £ None. Cost of Parts in Works which will be scrapped if commenced on:- Series............£......... Series............£......... Series............£......... Signature from Cost Dept. that above is correct. G/Rb.{R. Bowen} 1.10.28 G.{Mr Griffiths - Chief Accountant / Mr Gnapp} INITIAL | DATE | REMARKS BJ. | 2.10.28 | Agreed. B.J. R.{Sir Henry Royce} | 25/7/28 | Agreed. EM Royce WOR.{Arthur Wormald - General Works Manager} | 27.7.28 | Agreed. Wor.{Arthur Wormald - General Works Manager} RG.{Mr Rowledge} | 24.7.28 | Agreed. RG.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 23.7.28 | Agreed. DA.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 9.8.28 | Agreed. BY.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 24.7.28 | Agreed. EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 25/7/28 | Agreed. (signature) PN.{Mr Northey} | 25.7.28 | Agreed. PN.{Mr Northey} CWB. | 21.7.28 | Agreed. CWB. HS.{Lord Ernest Hives - Chair} | 20.7.28 | Agreed. Hs.{Lord Ernest Hives - Chair} | ||