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).
Summary of tests on chassis 93 NK.
| Identifier | ExFiles\Box 71\4\ scan0158 | |
| Date | 31th May 1924 | |
| Summary of tests on chassis 93 NK. X8940 Date. | Tested by.{R.W. Bailey - Chief Engineer} | Miles run. | Total miles. | Remarks. 23.4.24. | "HS{Lord Ernest Hives - Chair}" & A.J.L. Local. | 20 | 6,082 | M.{Mr Moon / Mr Moore} des 60 servo scheme fitted. Engine E.A.C.II NO.2 fitted with new suspension. Scintilla mag. AM-6-A No. 34937 fitted - timed 15° F.T.D.C. (fully retarded). Brakes operate under very light pressure, forward & reverse. Lag in braking owing to servo taking up clearances is hardly noticeable. Servo adjustment requires altering. Impossible to adjust. Too much rear braking. servo gears are very noisy. steering stiff. 24.4.24. | A.J.L. Local. | 25 | 6,107 | Leverage altered to give 20% more braking to front brakes. Slightly too much front braking. Servo sticks on (plates were adjusted too close). Front brakes jagger. O.S.F. brake more effective than N.S.F., causing steering to pull to right when brakes are applied. 25.4.24. | Fitters. | | | Servo dismantled. Stronger spring fitted between plates. Plate operating mechanism altered to prevent sticking. Brake operating rods from servo to balance lever altered. 25.4.24. | "HS{Lord Ernest Hives - Chair}" Mr. Day & Mr.Elliott. Local. | 20 | 6,127 | No report. 14.5.24. | Fitters. | | | New cross steering tube fitted to replace one that was bent. 15.5.24. | G.W.H. Local. | 40 | 6,577 | Engine gears rattle. Side steering tube fouls wheel. Carburetter set too strong - low & high speed. Steering bad for shocks. Battery ignition missing. Brakes very even when pulling up. very little wind up of axle. Reverse good. Too much braking on rear. Tappets noisy. Clutch bad for stopping when hot. Starter carb. controls work wrong way. Throttle will not shut. 26.5.24. | "Rg{Mr Rowledge}" Derbyshire. | 185 | 7,208 | Front brakes jagger badly leaving Works, but not afterwards. Quite good brakes. Back skids on grease. Clutch bad. Stopped on hill to test. 31.5.24. | Fitters. | | | Magneto changed from Scintilla to Watford M.06. Times magneto. Dynamo .05 fitted, replacing dynamo E.{Mr Elliott - Chief Engineer} on 93 NK. | ||