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).
Corrosion of a carburetter air valve on a Phantom engine and proposing material changes.
| Identifier | ExFiles\Box 74\2\ scan0024 | |
| Date | 14th September 1927 | |
| X4357 BY/cs. c.Hs.{Lord Ernest Hives - Chair} c.Hs{Lord Ernest Hives - Chair}/Mr.Lovecy. BY8/H.{Arthur M. Hanbury - Head Complaints} 14.9.27. PHANTOM ENGINE. CARBURETTER. CORROSION OF AIR VALVE. It appears to me it is possible that the corrosion effects are encouraged, and possibly set up altogether, by the characters of the two metals in contact. We know quite well that aluminium and bronze are bad, but possibly aluminium and nickel/silver, or aluminium in contact with polished stainless steel, would be entirely immune, quite irrespective of the characteristic of the aluminium itself, unless of course a definite corrosive were introduced into direct contact with the aluminium. I would suggest therefore that the Drawing Office instruct one air chamber to be produced from nickel silver bar, including the nut, and one from stainless steel. In the meantime, we are endeavouring to obtain an aluminium alloy which is not easily attacked by slight saline solutions. RECEIVED 14 SEP 1927 BY.{R.W. Bailey - Chief Engineer} By | ||