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).
Safety factor testing of Lake & Elliott brake drums for the Phantom II.
| Identifier | ExFiles\Box 120\1\ scan0080 | |
| Date | 22th March 1932 | |
| X4612 To RHC.{R. H. Coverley - Production Engineer} From Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux} Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux}3/MJ.22.3.32. Re. Lake & Elliott Brake Drums. Before standardising the above brake drums, we wish to try and find out the safety factor of cracking or bursting quickly. To do this we should like one Phantom ll rear drum machined at the bottom of the ribs to make the drum a thickness of 0.150" for the first test, and if this stands up, a further .050" to be machined off leaving the drum thickness 0.100" Hs{Lord Ernest Hives - Chair}/G.W.Hancock. | ||