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).
Questioning the drilling angle of oil drain holes in 25/30 & Bentley flywheels to assess potential savings.
| Identifier | ExFiles\Box 103\1\ scan0262 | |
| Date | 29th August 1938 | |
| To RHC.{R. H. Coverley - Production Engineer} from Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler} 512 also 212. Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler}4/MH.{M. Huckerby}29.8.38. 25/30 & BENTLEY FLYWHEELS. The oil drain holes are drilled at an angle as at A.{Mr Adams} They would be just as effective if drilled parallel to the shaft as at B. We would be glad to know if drilling them parallel would effect any appreciable saving in drilling, jigging and handling, and if you consider an alteration would be worth while, in view of the fact that jigs for drilling at an angle already exist. A B Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler} | ||