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).
Potential ineffectiveness of the Wraith III cam balancer and requesting a new scheme with it deleted for experimental trials.
| Identifier | ExFiles\Box 6\6\ 06-page426 | |
| Date | 27th January 1938 | |
| To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} C. De. 8 600 Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}7/MH.{M. Huckerby}27.1.38. WRAITH III CAM BALANCER. Although we have not finished our final proof that the cam balancer is of no value on the above unit regarding gear rattles from tests taken there is every possibility that it will not be necessary. In view of this will you please lay out a scheme showing the balancer deleted. This will simplify a number of things and should be detailed and instructed for experimental trial. In the meantime, we shall have opportunity of definitely proving out the effectiveness of the cam balancer in accordance with By/B's calculations. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||