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).
Blueprint of graphs comparing steering angle curves with and without various roll rods and tyre pressures.
| Identifier | ExFiles\Box 170\3\ img136 | |
| Date | 24th December 1937 guessed | |
| TYPICAL STEERING ANGLE CURVE WITH REAR ROLL ROD TYRE PRESSURES: REAR 30 LBS/SQ" FRONT 25 LBS/SQ" FIG. 1 STEERING ANGLE CURVES WITHOUT ROLL ROD ① FRONT TYRES 25 LBS/SQ" | REAR 30 LBS/SQ" ② FRONT & REAR TYRES 30 LBS/SQ" ③ AS 2 BUT WITH 200 LBS BALLAST IN REAR OF CAR FIG. 2 STEERING ANGLE CURVES WITH OLDSMOBILE FRONT ROLL ROD AND NO REAR ROLL ROD 1 FRONT TYRES 25 LBS/SQ" | REAR 30 LBS/SQ" 2 FRONT & REAR TYRES 30 LBS/SQ" FIG. 3 Y-AXIS: UNDERSTEER, OVERSTEER X-AXIS: SIDEWAYS G.{Mr Griffiths - Chief Accountant / Mr Gnapp} | ||