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).
Laboratory report on the results of Rockwell hardness tests for propeller shaft spiders and Phantom III outer races.
| Identifier | ExFiles\Box 148\4\ scan0100 | |
| Date | 29th November 1938 | |
| 1262 M.1748. To Rm{William Robotham - Chief Engineer}/FJH{Fred J. Hardy - Chief Dev. Engineer} from H1/EJW. Laboratory. H1/EJW. 1/JM.{Mr Morley} 29.11.38. Hardy Spicer Propeller Shaft Spiders. Your ref. Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} 14/MH.{M. Huckerby}15.11.38. Five Hardy Spicer propeller shaft spiders and two R.R. Phantom III outer races were submitted for Rockwell hardness tests. The following are the results obtained. HARDY SPICER PROPELLER SHAFT SPIDERS. No.1 27G VI 17,000 miles C58-61. C59-62. C59-61. C60-61. Rear end. No.2 27G VI Front end. C55-57. C54-55. C56-57. C58-58. No.3 5B IV Dyno Chassis. C57-59. C59-59. C57-59. C58-59. -PS. No.4 8BU 41,000 miles from repair dept. C61. C58-61. C60. No.5 25G Front end. C61-62. C62-62. C58-59 C61-63. PHANTOM III OUTER RACES. A.{Mr Adams} B. No.1 C61. C57-58. No.2 C44-47? C47-50.? (Handwritten note: 41,000 miles { pointing to No.1 and No.2) The rockwell figures quoted in 2A & B are incorrect as the thickness of case is insufficient. Vickers tests on No.2A verified this. H.VPN/30 . . . 661. No.2A. H.VPN/10 . . . 690. H1/EJW. | ||