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).
Report page detailing a list of vehicle faults and performance observations.
| Identifier | ExFiles\Box 65a\3\ scan0103 | |
| Date | 19th August 1929 | |
| - 2 - (5) Contd:- give similar trouble, and whether action should be taken retrospectively. This is the only case experienced on our final tests, other than failure of the flywheel teeth gears ( now replaced). (6) Engine periods. Engine harshness, rumble or roar (as described by Sg{Arthur F. Sidgreaves - MD}). is still prevalent about 45 to 50 m.p.h. The torque reaction period about 17 to 18 m.p.h. is also quite manifest. It is probably no worse than on 19-EX car. Hope to report more favourably when finished bodies fitted. (7) Exhaust noises. These are similar to those we complained of on 19-EX. The expandable Joint at the front end of the rear silencer, however, appears to be the chief source of trouble. We consider that this joint could be improved, as was done on the 20-HP. chassis. We also consider more definite clearance should be specified between the silencer and frame, also frame strutts. Spits from exhaust on retard. This is a feature which seems worse on this car than on the Phantom.(Sales are expecting something better.) (8) Gears. Generally speaking these have turned out rather noisy, but we are hoping will not be so manifest when fitted with complete body, properly fitting floor-boards, mats, etc. Works Side Shafts. These are also inclined to have a "dry" bearing noise". An improvement in this respect we anticipate will be obtained when ball bearings are fitted to BY's latest instructions. (9) Tappets noisy. Chiefly when cold and improve when the chassis is warmed up. Possibly no worse than the Phantom in this respect. We also understand that in order to obtain quiet working tappets the adjustment of the tappet clearance when cold should be .003, whereas the feeler gauge supplied gives a "go" gauge of .004 and a "not go" gauge of .005. (10) Slipper drive adjustment. The sensitive and frequent adjustment of this drive seems to be as necessary as was experienced on the Phantom in order to deal with engine bus knocks, throbs etc. (11) Brakes. There is a noticeable groan which appears to come from the front brakes when the brakes are in action, and seems generally consistent on this type of car. Why is this different from the Phantom? (12) Petrol supply. The question of having to hand CONTD:- | ||