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 the low-speed jet spindle and cone to prevent whistling noise and for strengthening.
| Identifier | ExFiles\Box 172\1\ img025 | |
| Date | 28th February 1923 | |
| R R 760 (6 H) (S H 268, 19-9-20) G 2454 COMPLETE 8.3.23 STANDARDISATION of CHASSIS PARTS. Date 28.2.23. X No. 4228 Description of Parts. LOW SPEED JET SPINDLE AND CONE. Handwritten: R, Re Canadell Drawing No. Part List Origin. To prevent whistling noise and to strengthen. 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. Experimental Test Report. We remove the collars above the low speed jet cone which are liable to cause a whistle. At the same time we wish to make the jet cone solid with the stainless steel spindle. We also propose modifying the angle of the cone with the object of reducing the range on the mixture control of the low speed jet. Road Test Report. Fitted to 4-G-11 - run 1000 miles. Fitted to 6-G-11 - run 800 miles. Tests prove these modifications to be an improvement. Signature of Exp. Dept. that above is correct. E.Hives. Cost of Parts in Works which will be scrapped if commenced on :- Series.... £.... Series.... £.... Series.... £.... Weight of Old Part. Cost of Old Part. £ 0. 2. 8 Weight of New Part. Cost of New Part. £ 0. 2. 4 Difference per Car. Difference per Car. £ 0. 0. 4d. saving. Storekeeper advised re above: Storekeeper's Signature. Signature of Mr. De LOOZE that above is correct. My/JW 3.3.23. SIGNATURES | DATE | REMARKS Mr. JOHNSON | 8.3.23 | CJ. agreed. Mr. E.JOHNSON. | 8.3.23 | BJ. agreed. Mr. ROYCE | 15.3.23 | Agreed FHR. The cone on 4.G. is not to be used it might invalidate grit mixture induction The other 3 points OK R Mr. WORMALD | 28.2.23 | Agreed. Wor.{Arthur Wormald - General Works Manager} Mr. BARRINGTON (crossed out) Mr. ROWLEDGE. | 7.3.23 | Agreed. Rg.{Mr Rowledge} Mr. DAY | 2.3.23 | Agreed. Da.{Bernard Day - Chassis Design} Mr. BAILEY | 28.2.23 | Agreed. BY.{R.W. Bailey - Chief Engineer} Mr. PLATFORD | 28.2.23 | Instructions should be issued to correct the whistle on all future cars before delivery. Agreed. EP.{G. Eric Platford - Chief Quality Engineer} Mr. NORTHEY | 2.3.23 | Agreed. PN.{Mr Northey} | ||