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).
Road trial report for an 8-cylinder Cadillac car, detailing its specifications and performance.
| Identifier | WestWitteringFiles\O\2January1926-March1926\ Scan51 | |
| Date | 1st February 1926 | |
| Ha/Rn{Mr Robinson}/LG2. 2.26. ROAD TRIAL OF CADILLAC CAR - (1.2.26). 8-CYLINDER - RATING 32 H.P. Particulars of car - Brougham closed body - 3 passengers. 8 cyl. Vee. Side valves. 79 mm. X 130 mm. 5097 Displacement. 4.5 compression ratio. 6.75" balloon tyres. Worm and segment steering. Watsons Stabilators. 3-speed central change. Single plate clutch. Direct operation four-wheel brakes. Suspension - semi-eliptic. Direct drive 4.5 - 1. Car weight - empty - 2 tons. Displacement/ton/wheel rev. 11,400 Phantom - " " " " 10,400 Approximate mileage of car by speedometer - 25. Conditions. Roads mostly wet tarmacadum. Occasional dry patches. Weather fine - cold. The primary object of this test was to determine the means which the Cadillac Co. have adopted to enable them to fit their cars with balloon tyres and at the same time overcome the trouble of high speed steering wobbles. The general behaviour of the car is not such as would be considered desirable on a Rolls-Royce car and the chassis is not, therefore, described in detail. STEERING. The car upon which the test was carried out was quite new having apparently previously done no mileage. The tyres fitted were 6.75" balloons. The Cadillac people recommend that these should be inflated to 38 lbs/sq.in. when contd :- | ||