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).
Graph comparing frame cross deflections under torque and load for four different designs.
| Identifier | ExFiles\Box 94\4\ scan0049 | |
| Date | 1st May 1935 | |
| FRAME CROSS DEFLEXIONS Y-Axis Labels: TORQUE IN LBS INS LOAD IN LBS 300, 24, 200, 20, 16, 12, 100, 8, 4 X-Axis Labels: Top Row: DEFLEXION, .050, .100, .150, .200, .250, .300, .350 INS Bottom Row: TRANSVERSE TWIST, 10', 20', 30', 40', 50', 1° 10', 1° 20', 1° 30', 1° 40' Legend: FIG. 1: PRESENT SPECTRECodename for Phantom III FIG. 2: PRESENT SPECTRECodename for Phantom III WITH REINFORCED TOP & BOTTOM PLATES AT CENTRE FIG. 3: ORTHODOX CROSS WITH FLAT TOP & BOTTOM PLATES AT CENTRE FIG. 4: DITTO CURVED & SWAGED PLATES AT CENTRE Graph Line Labels: FIG. 1, FIG. 2, FIG. 3, FIG. 4 | ||