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 distributor gears on the magneto to reduce noise.
| Identifier | ExFiles\Box 172\3\ img080 | |
| Date | 12th January 1925 | |
| RR 755 (10M) (SL321 2-11-23) MP 281297 ORIGINAL COMPLETED 29.1.25 STANDARDISATION of CHASSIS PARTS. Date 12.1.25 X No. 4648 Drawing No. Part List Description of Parts. DISTRIBUTOR GEARS ON MAGNETO. Origin. To reduce noise. Experimental Test Report. The makers of the Watford magneto have standardised magneto pinion with a large aluminium wheel for driving the distributor gears. The object is to reduce the noise of the magneto. Road Test Report. Run 10,500 miles on 9-PK. " 15,000 " " 98-NK. " 5,000 " " 5-EX. " 5,000 " " 49-GB. Run 445 hrs. on bench. On examination the pinion and wheel have been found in excellent condition. There is a definite reduction in the noise but the amount of noise from the magneto can still be criticised. Weight of Old Part. £ Weight of New Part. £ Difference per Car. Cost of Old Part. £ Cost of New Part. £ Difference per Car. None. Signature of Mr. De LOOZE that above is correct. My/Ris. 27.1.25 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 Cost of Parts in Works which will be scrapped if commenced on:- Series.........£......... Series.........£......... Series.........£......... SIGNATURES | DATE | REMARKS MR. JOHNSON | 29.1.25 | Agreed. C.Johnson. MR. B. JOHNSON | 29.1.25 | Agreed. B.J. MR. ROYCE | 17/1/25 | Agreed F H RoyceSir Henry Royce MR. WORMALD | 13.1.25 | Agreed, less cost, and reduced noise. MR. ROWLEDGE | 13.1.25 | Agreed. RG.{Mr Rowledge} MR. DAY | 14.1.25 | Agreed. DA.{Bernard Day - Chassis Design} MR. BAILEY | 13.1.25 | Agreed. BY.{R.W. Bailey - Chief Engineer} MR. PLATFORD | 13.1.25 | Agreed. EP.{G. Eric Platford - Chief Quality Engineer} MR. ELLIOTT | 13.1.25 | Agreed. E.{Mr Elliott - Chief Engineer} MR. NORTHEY | 26.1.25 | Agreed. PN.{Mr Northey} MR. HIVES | 27.1.25 | Agreed. E.Hives. | ||