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 Rotol Airscrews Ltd. discussing the use of tri-metal versus straight babbitt bearings for engines.
| Identifier | ExFiles\Box 115\2\ scan0625 | |
| Date | 5th August 1941 | |
| Rn.{Mr Robinson}11/ET. 5th August, 1941. D.R. POBJOY, Esq., Rotol Airscrews, Ltd., Cheltenham Road, GLOUCESTER. Dear Pobjoy, Thank you for your letter DEP.11/CA. of 2nd August. The bearing you mention is evidently tri-metal, since you speak of steel, lead-bronze and babbitt. The only Company we know of that make tri-metal bearings is Vandervell Products Ltd, Western Avenue, Park Royal, W.3. We have never been in production with Vandervell tri-metal bearings, though we have done about a quarter million miles experimental running on them, and shall probably standardise them for main bearings after the war. For your engine where the duty is so light, I should have thought that straight babbitt would have given the best results, and I think the Hoyt Bearing Company produce the best article of this type. Yours sincerely, | ||