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).
Specifying the new outer brake drum (G.72554) with increased Brinell hardness for cars with four-wheel brakes.
| Identifier | ExFiles\Box 73\3\ scan0060 | |
| Date | 3rd June 1924 | |
| 49240 RHS. c. Hs.{Lord Ernest Hives - Chair} c. Mr. D'Aeth. BY9/H.{Arthur M. Hanbury - Head Complaints} 3. 6. 24. LARGE OUTER BRAKE DRUMS ON CARS FITTED WITH FOUR WHEEL BRAKES. --------------------------------------- The correct outer brake drum to fit in conjunction with the four wheel Brakes is piece No.G.72554. The drum in question is precisely the same in every respect so far as dimensions is concerned, as the present one, the only difference being that the Brinell Figure is 239 to 277 as against 201 to 229. It is essential that we should fit the new brake drum on the cars which we are running in France in order to ascertain the effect of the wear and tear. BY.{R.W. Bailey - Chief Engineer} | ||