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).
Vehicle test log sheet detailing mileage and performance remarks from January 1925.
| Identifier | ExFiles\Box 71\4\ scan0162 | |
| Date | 31th January 1925 | |
| - 5 - Date. | Tested by.{R.W. Bailey - Chief Engineer} | Miles run. | Total miles. | Remarks. 3.1.25 | "Rg{Mr Rowledge}" Local. | 44 | 24,786 | Brakes noisy. 10.1.25 to 12.1.25. | "Hm{Capt. W. Hallam - Head Repairs}" Derbyshire. | 128 | 25,485 | Servo operated brakes not as good as standard. Brake mechanism squeaks. Servo jaggers & too fierce in operation - noticeable shunting. Gearbox side shaft sings when cold. Steering too stiff. Vibrations (not wobbles) noticed on steering wheel - worse at about 50 m.p.h. & worse still on retard at higher speeds. Change gear mechanism difficult to operate easily. 17.1.25 to 19.1.25. | "EP{G. Eric Platford - Chief Quality Engineer}" Manchester & return. | 252 | 25,821 | Servo gear unusual noise 40 - 35. Not so good as present standard (ground gears). Brakes squeak bad, & grabs. is not progressive with pressure on pedal. Engine general vibration 40 - 50 not bad. Slight drive vibrations. Universal joint knocks. Change gear still awkward across quadrant. Erratic slow runner on road. Very good standing. Carburation poor. L.S. jet weak. H.S. jet strong. - fails weak on pick up. Steering - fairly steady, but feels like too much pivot lean, or faulty tracking up. 24.1.25 to 26.1.25. | J.Maddocks. Derby & district. | 98 | 26,066 | Starter carburetter failed on one occasion, due to main throttle not closing. Rubbing noise apparently from front of engine when clutch is depressed on starting engine from cold. Carburation weak when picking up after "cornering". Unusual amount of slack noticeable in transmission when operating clutch while under way. 31.1.25. | J.Maddocks. Derby & district. | 68 | 26,154 | Engine difficult to start from stone cold. Appears only to "draw" on the starter carburetter from one or two cylinders. Compared with standard 40/50HP. gear lever is "heavy" to manipulate. Brakes squeak. | ||