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).
Hand-drawn exploded diagram of a clutch lining testing rig.
| Identifier | ExFiles\Box 26\4\ Scan223 | |
| Date | 15th July 1923 | |
| EXPERIMENTAL REPORT. R.R. 402A (40 H) (81. 42 15-7-23). J.H.D. Expt. No. V3409 REF: Thick Plate to Prevent Warping from Heat Lining Riveted On DRIVEN DRIVING Ball Race Holes Drilled to Prevent Heat Destroying Ball Race Spigot to keep two plates running truely. Clutch Lining Testing Rig Ferodo Chapel en le Frith. | ||