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).
Experimental production of a starter motor pinion from Firth's N.M.C. steel.
| Identifier | ExFiles\Box 62\1\ scan0152 | |
| Date | 24th July 1933 | |
| BY/RD. c.Hs{Lord Ernest Hives - Chair}/Wst. 86027 BY/EM4/J.24.7.33. Starter Motor Pinions. Will you kindly note that we have now taken up this matter with BY.{R.W. Bailey - Chief Engineer} and it is agreed that we should instruct one pinion to be produced in Firth's N.M.C. steel for experimental testing. We are not very hopeful that this steel will be satisfactory owing to its work hardening characteristics. The Experimental Dept. already have some of this material on order for aero engine valve seats and we think some of this can probably be used for the above experiment. BY/EM. | ||