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).
Stoneguard for Phantom III brakes to prevent stones from jamming the mechanism.
| Identifier | ExFiles\Box 92\4\ scan0315 | |
| Date | 25th March 1937 | |
| 306. AFM{Anthony F. Martindale} File BY.{R.W. Bailey - Chief Engineer} c.c. E.{Mr Elliott - Chief Engineer} Ba. Rm.{William Robotham - Chief Engineer} HFS. E/HDY.{William Hardy}1/WP.25.3.37. Phantom III Brakes. We send herewith N.Sch.5087 showing a stoneguard to prevent stones lodging between the rear brake countershaft and the crossmember, and jambing the brakes on as occurred on 35-EX on 10,000 miles test (see report dated 20.2.37). E/HDY.{William Hardy} .N.Sch.5087 herewith. | ||