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).
Numbered list of 20 vehicle modifications and features for enclosure.
| Identifier | ExFiles\Box 19\4\ Scan389 | |
| Date | 16th November 1935 | |
| List for enclosure with Sg{Arthur F. Sidgreaves - MD}6/E16.11.35 - Sg.{Arthur F. Sidgreaves - MD} to E.{Mr Elliott - Chief Engineer} 1. Increased diameter propeller shaft. 2. Overhanging bonnet (concealed hinges). 3. Synchro-mesh gearbox with silent second speed gear. 4. New Exhaust valves. 5. Increased front braking. 6. 7.00 tyres on 19" diameter wheels. 7. Semi-expanding Carburetter. 8. Anti Resonant silencer. 9. 5.25 Compression ratio (the later L.H. chassis had this). 10. New instrument panel. 11. 28 gallon petrol tank. 12. Electrical petrol gauge. 13. Combined petrol control tap on dash. 14. New engine coupling. 15. D.W.S.Jacks. 16. Carburetter Air Silencer. 17. Modified shock dampers and axle control. 18. Two horns attached to head lamp pillars. 19. Shimmy shackle. 20. Balanced crankshaft. | ||