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 to replace mica insulated spark plugs with Lodge Steatite Plugs, model Z.22.
| Identifier | ExFiles\Box 171\3\ img107 | |
| Date | 31th October 1921 | |
| R R 766 (6 H) (S H 268, 10-9-20) G 894 ORIGINAL COMPLETED - 24.11.21 STANDARDISATION of CHASSIS PARTS. Date 31.10.21. X No.4425 Drawing No. Part List Description of Parts. LODGE STEATITE PLUGS. Model Z.22. Origin. To replace the present Lodge plug with mica insulation. Experimental Test Report. We have so far tested 50 of these plugs - they have all given very good results. We recommend we order 500 of these sparking plugs. We propose using these plugs on Goshawk 11. Road Test Report. Run 5000 miles on 1.EX. Run 2000 miles on G.11. Run 75 hours on Bench Test. Signature of Exp. Dept. that above is correct. E.{Mr Elliott - Chief Engineer} Hives. Weight of Old Part. Cost of Old Part. £ 1. 17. 6 set. Weight of New Part. Cost of New Part. £ 1. 16. 0 set. Difference per Car. Difference per Car. £ 0. 1. 6 decrease. Signature of Mr. De LOOZE that above is correct. D/Rd. 31.10.21. A Scrap and replace at all costs, including Chassis already delivered to customers. B Scrap and replace on Chassis in works. C [X] 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.... £....... Storekeeper advised re above: Storekeeper's Signature. SIGNATURES | DATE | REMARKS Mr. JOHNSON | 18.11.21 | Agreed. C. Johnson. Mr. B. JOHNSON. | 18.11.21 | Agreed. BJ. Mr. ROYCE | 22/11/21 | Agreed FHR. Is difficult to clean, if mercury has got on. Mr. WORMALD | 1.11.21 | Agreed. Wor{Arthur Wormald - General Works Manager}, and oil on G.H.2 can be cleaned off and almost to the metal. Mr. BARRINGTON (crossed out) Mr. Rowledge. | 16.11.21 | Agreed. Rg.{Mr Rowledge} usual risk, the French porcelain in these is stated up as excellent. Mr. DAY | 2.11.21 | Agreed. Da.{Bernard Day - Chassis Design} Mr. BAILEY | 31.10.21 | Agreed. BY.{R.W. Bailey - Chief Engineer} Mr. PLATFORD | 1.11.21 | Agreed 500 to keep us going. Am not satisfied definite improvement over present Lodge, refer report EP{G. Eric Platford - Chief Quality Engineer}6/H281021. Mr. NORTHEY EWT for R.R. Inc | 10.11.21 | Agreed. PN.{Mr Northey} | ||