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 test report for Chassis 7.B.V. detailing acceleration times with different tyre setups.
| Identifier | ExFiles\Box 158\2\ scan0044 | |
| Date | 9th June 1939 | |
| -6- Rm{William Robotham - Chief Engineer}/TAS.{T. Allan Swinden}5/JH.9.6.39. Chassis 7.B.V. Hub H.P. in direct gear at 50 m.p.h - 89 H.P. Frontal area 24 sq.ft. Total weight 2 up 4000 lbs. Assumed K .0017 Front tyres Worn Avon at 35 lb.in.sq Rear tyres Test 1 New Dunlop Fort at 30 " Test 2 New India Super at 40 " ---------------------------------------------------------------------------------- | Results of road | Results obtained from power loss | | test. | curves. | |------------------------|----------------------------------------| | Accel. time 45 - 55 | Accel. at 50 m.p.h. | Approx. accel. | | m.p.h. | in MPH/SEC. | time 45 - 55 | | | | m.p.h. | |------------------------|---------------------|----------------| | Test 1. 4.0 secs. | 2.5 | 4.0 secs. | | Test 2. 3.6 | 2.7 | 3.7 | ---------------------------------------------------------------------------------- Rm{William Robotham - Chief Engineer}/TAS.{T. Allan Swinden} | ||