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).
Performance and issues found with the flywheel, clutch, gearbox, servo motor, and exhaust fittings.
| Identifier | ExFiles\Box 5a\3\ 03-page056 | |
| Date | 30th September 1931 guessed | |
| -2- FLYWHEEL & CLUTCH to LOP.G.53692. Complete to the above LOP. incorporating G.L.475. Stiffer Flywheel & Crankshaft Flange T.L.687. Oil Catcher and modified Clutch operating Sleeve and Guide to suit Automatic Spigot lubrication. The clutch has been very smooth in engagement with no sign of jaggers throughout the mileage. The clutch has at times been inclined to slip since our report at 8,000 miles, but has not been sufficient to cause any trouble on the road. During the latter part of the mileage it was quite free from this trouble. Examination of this will be made when the car is dismantled. GEARBOX & ACTUATING GEAR to LOP.G.54610. The consistent rattle that we reported, from the plunger of the change speed lever, we have practically eliminated by fitting an additional piece of rubber inside the plunger. We have had no trouble develop in the gearbox and changing of gears has been equal to standard production. The 3rd. gear we have not considered to be up to standard from a noise point of view. There has been a fair amount of oil leak from the bearings of the foot pedal shaft through the gearbox, and from the joint of the change speed lever. A full report will be made on the condition of the gearbox when it is dismantled. SERVO MOTOR MECHN. to LOP.G.54018. Servo lined with Standard Cotton Duck Washers. Complete to the above LOP. to suit Crossmember moved 13.900" rearward as at 101 in T. series. The servo is fitted up with ball bearing cams. These have worked very smoothly and have given no trouble throughout the mileage. The servo towards the finish of the mileage was not so efficient, examination shows that this was due to too much oil having got on to the fabrics, otherwise the servo has given no trouble throughout the test, and is in good condition. There is no sign of the fabrics having been pulled away from the staples. EXHAUST FITTINGS to LOP.K.55794. Extended Swan Neck Exhaust Pipe and Support to Scheme 1473. Rear Silencer to E.S.3287 P.II. Type. Exhaust manifold. We have had two failures of the exhaust manifolds during the test. The fractures have taken place in the centre between the two rear ports, in both cases the fracture was identical. We have had also another manifold which had broken, previously, this fracture had also taken place at the same position. | ||