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).
Noisy fan bearings on a car heater for the B.III and other chassis.
| Identifier | ExFiles\Box 137\2\ scan0015 | |
| Date | 7th February 1938 | |
| 1158 By/RD. from Rm{William Robotham - Chief Engineer}/Std. c. By.{R.W. Bailey - Chief Engineer} c. Da.{Bernard Day - Chassis Design} 200B Rm{William Robotham - Chief Engineer}/Std.12/AP.7.2.38 CAR HEATER FOR B.III. AND OTHER CHASSIS. With regard to the car heater to DCD.221 which you schemed for us, the bearings of the fan are extremely noisy, in our opinion for the following reasons:- (a) Because front cone is located on a thread instead of being accurately located on a spigot. (b) Because spindle and cones have been detailed in soft material instead of being case hardened. In view of the fact that the heater was modified expressly in order to permit use of hardened cones, we should take advantage of this. Will you therefore please modify the details to correct these defects as soon as possible as the heater is not fit to be put in the first B.III. car in its present state. Rm{William Robotham - Chief Engineer}/Std. | ||