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).
The mileage performance of pedals, engine mounting, gearbox, dampers, servo motor, and propeller shaft.
| Identifier | ExFiles\Box 82\2\ scan0106 | |
| Date | 24th July 1934 guessed | |
| - 3 - PEDALS WITH MOULDED RUBBER PADS. These have been satisfactory up to this mileage. There is no undue wear of the rubber and the grip on the pedal is normal. It was questionable whether during the very hot weather more heat was being felt by the foot. REAR ENGINE FLEXIBLE MOUNTING TO LEC. 3908 3937. The rear cross-member supporting the gear box has taken a set backwards, bringing the buffer pads out of alignment. There is no indication of the engine having dropped at the rear. GEAR BOX, MAGNESIUM CASTING. LOP. GB.518. NS.{Norman Scott}4095 MODIFICATION TO PREVENT RATTLES. The gears are a good standard for quietness, ease of change consistent and there has been no rattle in the drive on the forward or over-run. We have not observed any defects in gear box casing. No gears have come out of mesh during the mileage. HYDRAULIC DAMPER UNIT ON THE GEAR BOX. The pressure to the dampers has been maintained, with the exception that all the oil was lost out of the unit by the leaking of a damper elbow joint. The unit looses a slight amount of oil from the drain hole in the drive. We previously dealt with this and recommended a vent hole. SERVO MOTOR LOP. GB.503. NS.{Norman Scott}3927. Incorporating outboard ball bearing and friction linings RAD 13 which have been roasted. The efficiency of the Servo was not up to standard, and when examined we found the linings were deteriorating, pieces of the material having pulled out. These were replaced by standard RAD 13 linings and the servo efficiency was improved. Throughout the mileage too much pressure has been necessary on the foot pedal to obtain efficient braking. PROPELLER SHAFT NS.{Norman Scott}3911. Incorporating shaft damper to NS.{Norman Scott}3911 friction poundage set to 4 1/2 lbs. at 17 1/2 R.M.D. We have not experienced any over-run periods. The friction load has remained constant. The propeller shaft has fouled the cross-member on maximum bump and on rebound and has damaged the electric cable insulation fitted in the top of the crossmember. | ||