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).
Instructions regarding motor assembly, including component supply, bearing clamping, drawing tolerances, and direction of rotation.
| Identifier | ExFiles\Box 51\5\ Scan008 | |
| Date | 1st May 1921 | |
| - 2 - BY {R.W. Bailey - Chief Engineer} /WERL/EF9. 5. 21. - Continued. will forward to them the special Shaft and Bearing Bracket together with the small parts appertaining to the Bearing Bracket in order that they may completely assemble the motor for testing purposes before finally despatching to us. Will you also inform outside firms that the Outer Race of the Ball Bearing at the Driving End is clamped, and therefore any lateral movement of the Shaft must beprovided for on the Commutator End. The small numerals which appear underneath the dimensions on our drawings D. {John DeLooze - Company Secretary} 50002/3 are permissable limits of variation in thous. of an inch. BY {R.W. Bailey - Chief Engineer} /WER. W.E.R. P.S. Perhaps you will please inform outside firms of the direction of rotation which it is required these Motors will run(anti-clock wise looking on the Commutator End). E00S 'D (12-3-21) 250 'H S(L) 65) 103A 'H 'H | ||