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).
Lightening holes and anti-rattle features for the Wraith Gearbox, noting its use on the Bentley.
| Identifier | ExFiles\Box 8\11\ 11-page006 | |
| Date | 4th October 1934 | |
| X704 628 HDY.{William Hardy}4/MN. 4/10/34. To BY.{R.W. Bailey - Chief Engineer} Copy to Wer.M. Ms. Der.RHO. GRY{Shadwell Grylls} Wraith Gearbox. Herewith are N.Schs. 4199 and 4200 which show the lightening holes in the T.and 3rd. and 2nd. speed S.M. sliding pieces. We show the anti-rattle plungers and grooves for the T. and 3rd. sleeve as will be required when this box is used on the Bentley. HDY.{William Hardy} | ||