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).
Performance test results for car models 6-B-IV and 3-B-IV at Brooklands.
| Identifier | ExFiles\Box 85\4\ scan0166 | |
| Date | 2nd April 1936 | |
| To Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/FD.{Frank Dodd - Bodies}14/KW.2.4.36. 6-B-IV & 3-B-IV at Brooklands 31.3.36. & 1.4.36. Car Weights. 6-B-IV 3-B-IV. | | Time | Lap Speed | Time | 1/2 mile Speed | |---|---|---|---|---| | 3-B-IV with unit from B-56-BN.{W.O. Bentley / Mr Barrington} | 116.6 secs. | 85.72 MPH. | 21.0 secs. | 85.71 MPH | | 6-B-IV. Large carb. & large ind. pipe. | 115.4 secs. | 86.32 MPH. | 20.8 secs. | 86.54 MPH | | 6-B-IV small carbs. & small induction pipe. | 114.4 secs. | 87.07 MPH. | 20.8 secs. | 86.54 MPH | | 6-B-IV Large carb. & small induction pipe. | 113.8 secs. | 87.53 MPH. | 20.8 secs. | 86.54 MPH | | 6-B-IV Repeat on second day. Large carb. & small induction pipe. | 113.8 secs. | 87.53 MPH. | 20.0 secs. | 90.00 MPH | | 6-B-IV Large carb. & small induction pipe, Cut-out plate removed. | 112.8 secs. | 88.3 MPH. | 20.0 secs. | 90.00 MPH | | As above with mixture control 4 notches strong. | 112.0 secs. | 88.9 MPH. | 20.0 secs. | 90.00 MPH | | As above with carb. needles lowered 1/16". In this test the water temp went up 7° | 112.0 secs. | 88.9 MPH. | 20.0 MPH. | 90.00sMPH | | 6-B-IV Large carb. & small pipe, cut-out plate off, carbs. normal and R.R. ignition | 112.4 secs. | 88.62 MPH. | 20.0 secs. | 90.00 MPH | | 6-B-IV Cyl.head, large carbs. & large ind. pipe off 3-B-IV late B-56-BN{W.O. Bentley / Mr Barrington} R.R. ignition | 113.6 secs. | 87.68 MPH. | 20.0 secs. | 90.00 MPH | TESTER - A.B. Roberts Hs{Lord Ernest Hives - Chair}/F.Dodd. | ||