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).
Propshaft spline test report comparing load and torque for a Phantom III and a Bentley (Hardy-Spicer type) propshaft.
| Identifier | ExFiles\Box 87\3\ scan0065 | |
| Date | 6th July 1936 | |
| PROP. SHAFT SPLINE TEST R.R. PHANT. III PROP. SHAFT (G82089) LOAD (LBS) | TORQUE (LB-FT) 100 | 30 200 | 70 300 | 120 400 | 180 500 | 210 600 | 240 700 | 286 800 | 330 900 | 380 BENTLEY PROP. SHAFT (HARDY-SPICER TYPE) LOAD (LBS) | TORQUE (LB-FT) 100 | 22 200 | 60 300 | 90 400 | 120 500 | 150 600 | 190 700 | 220 800 | 254 900 | 290 1,000 | 340 6-7-36 HB{C. E. Harcombe} | ||