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 tests of a 4-port induction system, comparing performance and acceleration data against a production chassis.
| Identifier | ExFiles\Box 123\4\ scan0316 | |
| Date | 15th November 1936 | |
| 1042 To Rm.{William Robotham - Chief Engineer} 32-EX. Report on Road Tests of 4 port Induction System. Slow speed running was equally as good as the standard system. An improvement was noticed in not loading up so easily. Misfiring at low speed full throttle on this car is due to the poor quality ignition wires. These short badly through the insulation to the front conduits. The above car under test was fitted with high lift petrol pumps in the frame. These failed on maximum delivery during oil consumption tests (15.11.36.) Maximum speed of 105 M.P.H. reduced to 75 M.P.H. Consumption of road performance and acceleration tests with a production chassis are as follows :- 32-EX. No. 3-AX.122. Chassis. t. cwts. qr. lbs. t. cwts. Total weight. 2 11 1 14 2 11 Front 1 4 0 14 loaded to equal 32-EX. Rear 1 7 1 0 Time taken up Ticknall Hill 50.2 secs. 54 sec. Average maximum speed 100 M.P.H. (S.R.) Not taken. Average figures of 3 runs taken each way. 10-40 M.P.H. 10 secs. 10.8 secs. 10-50 " 14 " 15.3 " 10-60 " 18.3 " 20.0 " 10-70 " 23.4 " 10-80 " 30.6 " | ||