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 proposal for the 20 HP starter drive to improve reliability.
| Identifier | ExFiles\Box 172\2\ img046 | |
| Date | 21th November 1927 | |
| RR 75B REVISED (10H) (DE 649 9-12-26) BM. 2/1157. ORIGINAL COMPLETED 12.12.27 STANDARDISATION of CHASSIS PARTS. Date 21.11.27 X No. 5650 Drawing No. 3587 Description of Parts. 20 HP. STARTER DRIVE. Origin. To improve reliability. Experimental Test Report. It has been proved that failures of the present 20 HP. starter is frequently caused by the pinion binding against the stop. The modified stop has circumferential teeth and this cannot occur. Road Test Report. Run on 11-G-11 500 miles. 500 starts made with this starter equivalent to at least 10,000 miles. Recommended for immediate standardisation. 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. 20. H.P. CHASSIS Weight of Old Part. Cost of Old Part. £ 1. 8. 10 Weight of New Part. Cost of New Part. £ 1. 9. 9 Wor.{Arthur Wormald - General Works Manager} Difference per Car. Difference per Car. £ 11d. increase. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Cost of Parts in Works which will be scrapped if commenced on:- Series...£...... Series...£...... Series...£...... Signature from Cost Dept. that above is correct. G/RD. 2.12.27 INITIAL | DATE | REMARKS BJ. | 12.12.27 | Agreed. BJ. R.{Sir Henry Royce} | 23/11/27 | Agreed HR WOR.{Arthur Wormald - General Works Manager} | 22.11.27 | Agreed. Wor.{Arthur Wormald - General Works Manager} RG.{Mr Rowledge} | 22.11.27 | Agreed. RG.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 23.11.27 | Agreed. Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 22.11.27 | Agreed. BY.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 22.11.27 | Agreed. EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 24/11/27 | Agreed (RE) PN.{Mr Northey} | 21.11.27 | Agreed. PN.{Mr Northey} CWB. | 24.11.27 | Agreed. CWB. Hs.{Lord Ernest Hives - Chair} | 21.11.27 | Agreed. Hs.{Lord Ernest Hives - Chair} | ||