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).
Hair cracks in crankshafts and the A.I.D.'s exceptions to them.
| Identifier | ExFiles\Box 38\6\ Scan011 | |
| Date | 17th June 1918 | |
| R from BY.{R.W. Bailey - Chief Engineer} c. CJ. c. Wor.{Arthur Wormald - General Works Manager} c. EP.{G. Eric Platford - Chief Quality Engineer} c. EH. X 3381 USA June 17th 1918. BY12/P17618. Hair Cracks in Crankshafts. Attached herewith please find copy of a cable received from Mr. Nadin. There seems to be very little hope indded that the points suggested can be put into practice, owing to the fact that the A.I.D. are even taking exception to a hair crack when it occurs on a repair engine in number 7 journal, through which one might say no load at all is being transmitted. The only stress that this journal actually carries being due to the bending moment plus the slight tortional stress due to driving the accessories, or that due to starting up the engine from cold, either by hand or by electric motor. BY.{R.W. Bailey - Chief Engineer} | ||