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).
Test and mileage log for chassis 98-NK, fitted with engine No.4.EAC.11.
| Identifier | ExFiles\Box 69\3\ scan0186 | |
| Date | 30th March 1925 | |
| ASSIS 98-NK. Fitted with Engine No.4.EAC.11 on 23.1.25. DATE. Tested by.{R.W. Bailey - Chief Engineer} Miles run. Total miles. REMARKS. 23.1.25 to BJ. PN.{Mr Northey} CWB. 400 400 13.2.25 before going to France. 100 500 13.2.25 to Expl:tests in France. 10,032 10,532 Report Hs{Lord Ernest Hives - Chair}/AJL/LG30.3.25. 25.3.25 Average speed throughout test 41.5 m.p.h. Petrol consumption 11.1 m.p.g. Oil consumption 310 m.p.g. Max. speed attained 88 m.p.h. Failures of major importance. No. 6 piston after 5220 miles. Rear exhaust manifold after 8006 miles. Top leaf N.S.F. spring after 8006 miles. Top leaf O.S.F. spring after 9350 miles. Other complaints. Engine support tubes bending. 25.3.25 to Expl: Tests. 968 11,500 10.4.25 10.4.25 to Hy.{Tom Haldenby - Plant Engineer} 100 11,600 Steering stiff at slow speeds. 14.4.25 Brakes squeak badly (rear) 14.4.25 to Expl: Tests. 20 11,620 21.4.25 Car tested by R.{Sir Henry Royce} at Le CanadelHenry Royce's French residence. | ||