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 to Champion Sparking Plug Co. Ltd. enquiring about the specifications and availability of type L.8 spark plugs for Bentley chassis.
| Identifier | ExFiles\Box 162\3\ img064 | |
| Date | 2nd February 1937 | |
| 6000 Experimental Department 2nd. February 1937. Rm{William Robotham - Chief Engineer}/Wst.1/AP. Champion Sparking Plug Co.Ltd., 83 Pall Mall, LONDON S.W.1. Dear Sirs, We understand that you have professed ignorance regarding type No.L.8. for Champion sparking plugs. Surely this plug is one running a shade hotter than the L.10, which is being used in fairly large quantities. We have already received from you LB.8. sparking plugs for the Bentley chassis, these being the L.8. plug with the longer barrel. If you have no such plug as the L.8., what standard plug have you with a heat factor slightly less than the L.10.? We should value your help in this matter as soon as possible. Yours faithfully, FOR ROLLS-ROYCE LTD. | ||