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).
Instructions for testing various varnishes on distributor heads and fitting them to specific chassis for testing.
| Identifier | ExFiles\Box 39\3\ Scan300 | |
| Date | 8th December 1924 | |
| RR 238 (150 BKS.) (DS 461-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To Order No. Customer's No. 19 have a synthetic rezin base and we have since proved that the pure synthetic rezin tracks just as easily as the mixed bakelite powder. Three heads varnished with "Elo", "Marconite" and Shellac respectively are being tested under normal and abnormal conditions in the lab, the abnormal condition consisting of running the distributor open circuited. Distributor heads varnished with "Elo", Mr Brocks varnish, and "Armacell" are, or are instructed to be, fitted to chassis 9G3, 8EX and 12EX for test. Signed H.{Arthur M. Hanbury - Head Complaints} E.{Mr Elliott - Chief Engineer} W. This Sheet must be filed on completion of the work. | ||