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).
Bar chart comparison of riding comfort tests at 40 MPH, analysing the effect of spare wheels on a Lancia and comparing riding characteristics with a Phantom.
| Identifier | ExFiles\Box 67a\1\ scan0247 | |
| Date | 6th October 1926 guessed | |
| HIGH SPEED RIDING COMFORT TESTS 40. M.P.H. EFFECT OF SPARE WHEELS ON THE LANCIA CAR TYRE PRESS 40 & 45 LBS./D" REAR SEATS SPARE WHEELS ON - 55 C.C. SPARE WHEELS OFF - 89 C.C. FRONT SEATS. SPARE WHEELS ON - 18 C.C. SPARE WHEELS OFF - 32 C.C. COMPARISON HIGH SPEED RIDING CHARACTERISTICS LANCIA AND PHANTOM TYRE PRESS 40 & 45 LBS./D" REAR LANCIA REAR DAMPERS 40 LBS - 55 C.C. 40/50 OPEN TOURING HYDRAULICS FRONT HARTFORD S40 REAR - 111 C.C. FRONT LANCIA - 19 C.C. 40/50 OPEN TOURING HYDRAULICS FRONT 35.75 FRICTION REAR 40 LBS - 23 C.C. | ||