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).
Comparative table of frame and headlamp movement with different stabilisers and wing types.
| Identifier | ExFiles\Box 3\6\ 06-page256 | |
| Date | 11th October 1934 guessed | |
| 1 Standard Wings Fitted. Frame Movement. N/S Headlamp Movement. O/S Headlamp Movement. Headlamp Cross Member 16% reduction 11% reduction 3% reduction Rover Stabiliser 21% * 27.3% * 20.8% * Wilmot * 22% * 21.8% * 14.6% * Cross Member & Rover Stabiliser. 25% * 30.9% * 20.8% * Cross Member & Wilmot Stabiliser 36% * 37.3% * 32.3% * One-Piece Wings Fitted Frame Movement N/S Headlamp Movement O/S Headlamp Movement. Headlamp Cross Member 13% Increase 6.6% reduction 5.4% increase Rover Stabiliser 13% Reduction 27.8% * 30.6% reduction Wilmot * 28.2% * 42.6% * 34.2% * Cross Member & Rover Stabiliser 20.6% * 37.7% * 29.7% * -do- & Wilmot Stabiliser 30.4% * 50% * 42.3% * | ||