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).
Design modifications, costs, and competitor analysis for a gland and bearing assembly.
| Identifier | ExFiles\Box 149a\3\ scan0244 | |
| Date | 6th July 1939 | |
| -2- our design should be modified to incorporate only a small shoulder and the shaft should be the same diameter for the fan bearing spindle and the water pump spindle. (7) The distance between the rotor boss and the carbon ring should not be greater than .300" and .250" was mentioned as being an ideal figure. Thispoint was stressed as being very important. (8) The brass spring retaining washer used in conjunction with the gland, was stated to be advisable. Humber's discarded this but were compelled to cement the rubber to the carbon by using 'Bostic' rubber cement manu-factured by a Leicester firm. If this is not used leaks are inclined to develop between the rubber and the carbon ring. (9) Costs for the gland specified in quantities of 300 are as follows :- Morgan Stuart gland to EXS.1777. (a) Complete gland (rubber washers and spring) - 1/8½. (b) Gland and washer only ................. - 1/6. (c) Gland ring only ...................... - 1/3½ (d) Rubber washer.......................... 2½. (10) Sealed bearings were generally considered unsatisfactory, but Daimlers appeared to have a satisfactory job. The bearing being made by Delco-Remy, however, and not Skefco. We propose getting in touch with this firm with the object of obtaining a specimen for test. (11) Firms using the Morgan Stuart gland were quoted as Morris, Austin, Alvis and Daimler whilst Vauxhalls were said to have ordered 100 sets for a test series of cars. This would appear to indicate that though this gland is rather expensive, no cheaper substitute has been developed which will give equal results. Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards} | ||