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).
Performance graph for a Bentley 5 Corniche showing tractive forces and resistance with standard tyres.
| Identifier | ExFiles\Box 97\3\ scan0068 | |
| Date | 4th March 1939 | |
| BENTLEY 5 CORNICHE - STANDARD TYRES AXLE 12 x 41 & 11 x 41 - OVERDRIVE 12 TO 11 TYRES STANDARD 16x6.50 720 REV PER MILE 48 LBS INS² WGT TESTED 34.75 CWTS = 1.74 TONS PROJECTED AREA 24 FT² K = .00121 TRACTIVE FORCE HUB H.P. TRACTIVE RESISTANCE 12 x 41 OVERDRIVE 11 x 41 OVERDRIVE MAX SPEED 12 x 41 AXLE = 101.0 M.P.H MAX SPEED 11 x 41 AXLE = 100.0 M.P.H Y-AXIS LEFT: FORCES, TRACTIVE H.P. B.H.P Y-AXIS RIGHT: M.P.H Ev{Ivan Evernden - coachwork} 4.3.39 | ||