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).
Letter from Crerar, Morgan & Co. Ltd. regarding the performance of their G.M.S. spark plugs with leaded fuel.
| Identifier | ExFiles\Box 58\2\ Scan306 | |
| Date | 5th March 1936 | |
| G.M.S. PLUGS "FIRING SURFACE" — NOT firing points Sole concessionnaires? CRERAR, MORGAN & Co. LTD. 172, BUCKINGHAM PALACE ROAD, LONDON, S.W.1. DIRECTORS: Lieut. Col. R.{Sir Henry Royce} CRERAR. O.B.E. F.W. MORGAN, B.Sc.(Eng) TELEPHONES: SLOANE 9218, 9219 TELEGRAMS: RARERC, SOWEST, LONDON CABLES: RARERC LONDON 5th March, 1936. Messrs. Rolls-Royce Ltd., Experimental Department, DERBY. For the attention of Mr. West. Dear Sir, We are in receipt of your letter of the 4th inst., and beg to thank you for your courtesy in replying so promptly. We note your remarks regarding the effect of leaded fuels on copper electrodes, but would respectfully point out that we purposely used copper alloy with a very high cadmium content which almost entirely overcomes the trouble which you mention. In point of fact, the writer has been running a super charged Lancia with these plugs fitted, and running on leaded fuels, and one set has already done 5,000 miles and after resetting of the gaps etc., it is fully anticipated that they will run for at least double this mileage. May we suggest therefore, that you might consider running a test with these plugs, notwithstanding your views, as we feel sure that you will be agreeably surprised. Yours faithfully for CRERAR, MORGAN & Co., LTD. pp Fw Morgan DIRECTOR. Handwritten notes: Top of page: L6000. Center of page: WST Left margin: R-S, Can you get some on test with Salt. FWM/JH. Bottom right: 6 issued to Salt on the 7/3/36. WST, R.S. | ||