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).
Prevention of rust in the change gear mechanism by addressing electrolyte issues and applying protective measures.
| Identifier | ExFiles\Box 15\5\ Scan186 | |
| Date | 12th February 1931 | |
| Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux} c. Sft.{Mr Swift} c. NH. (struck through) c. BY/TWD.{T. W. D???Aeith} X7320. BY3/G.12.2.31. L.H. CHASSIS - CHANGE GEAR MECHANISM. -------------------------------- Referring to Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux}5/KT.10.2.31. with the exception of the long sliding rod in the lever itself the whole of the mechanism was specified for cadmium plating from the first. Apparently, therefore, it must be the rod only which is the trouble. In regard to the rod, it is evident that the real cause of the trouble is the presence of the electrolyte in the hollow lever and in the hole in the ball end through which the reverse plunger operates, and therefore to prevent rusting it is essential that all the electrolyte should be thoroughly washed out of the lever, and the lever thoroughly dried by heat. Further, I consider that it is necessary to bush the small hole through which the long spindle slides with a brass bush. We will also cadmium plate the operating rod itself. Will Sft.{Mr Swift} kindly take special precautions to ensure that the electrolyte is thoroughly washed out from the hollow lever, and that the lever itself is thoroughly dried by the use of heat, and then when erecting the parts it should be well covered with Lanolised mineral oil, so that the whole of the interior of the hollow lever has been covered by it from end to end. Will BY/TWD.{T. W. D???Aeith} please put the above into operation, at the same time arranging a scheme to prevent the little plunger, controlling the use of the levers, from dropping out. [STAMP: RECEIVED 13 FEB 1931] By BY.{R.W. Bailey - Chief Engineer} | ||