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 regarding the construction and fitting of Bentley composite brake drums.
| Identifier | ExFiles\Box 85\1\ scan0027 | |
| Date | 20th February 1936 | |
| xvb To RHC.{R. H. Coverley - Production Engineer} Hs{Lord Ernest Hives - Chair}/AFM.{Anthony F. Martindale}9/KW.20.2.36. Bentley Composite Brake Drums. We have decided which 4 drums we want to put on B-23-AE. The front drum aluminium housings to be as instructed in Hs{Lord Ernest Hives - Chair}/AFM.{Anthony F. Martindale}12/KW.24.1.36. The near side front liner is to be made out of Millenite, and shrunk in with an interference fit of .030". Will you stamp the number 1.M.30 on the outside of the aluminium, for identification purposes. The off side front liner is to be made of "Brimol" austenitic iron shrunk in with an interference fit of .012". The housing should be marked '2.B.12'. The axle for these two drums is to be built up to L.O.P's GB.1235/1237. The near side rear drum is to be that instructed in Hs{Lord Ernest Hives - Chair}/AFM.{Anthony F. Martindale}12/KW.12.2.36, and should be marked 4.BCS.26. The off side rear drum is to be the same as that instructed in Hs{Lord Ernest Hives - Chair}/AFM.{Anthony F. Martindale}11/KW.24.1.36. We would like a new drum making as the first is slightly damaged. Will you mark it 5.M.26. The rear axle should be fitted with the dust covers you have already detailed, and all 8 foot brake shoes are to be lined with S.5805 Ferodo, with which we have already supplied you. New drums can be fitted with 10 fixing bolts in the hubs instead of 12. We do not want to try any of these drums on our rig - will you fit them to B-23-AE as soon as possible. Hs{Lord Ernest Hives - Chair}/A.F.Martindale. | ||