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).
Inefficiency of rear brake drum water excluders due to open holes and a request to block them for testing.
| Identifier | ExFiles\Box 101\4\ scan0149 | |
| Date | 17th December 1935 | |
| To GWH.{George W. Hancock - Head Chateauroux} X500a Hs{Lord Ernest Hives - Chair}/AFM.{Anthony F. Martindale}12/KW.17.12.35. 21-G-IV Rear Brake Drums. When water excluders are fitted to a brake drum it is important that there should be no open holes in the end plate: if there are the excluder isawaste of money. In your report on 32-EX you say the front excluders were efficient and the rear inefficient: this is because there were open holes in the rear end plate. You have done 10,000 miles on a Bentley in France in the Summer with no open holes and you had no criticisms to make: will you therefore please block up with rivets or riveted screws the two circles of holes in the rear drums and end plates of 21-G-IV before you do the 10,000 miles test, as we wish to have a precedent for this procedure on a 20/25. Hs{Lord Ernest Hives - Chair}/A.F.Martindale. | ||