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).
Letter from Borg & Beck Company Ltd discussing proposed clutch applications and material specifications.
| Identifier | ExFiles\Box 129\2\ scan0036 | |
| Date | 8th April 1935 | |
| Telegrams BORGANBECK, LEAMINGTON SPA. Telephone LEAMINGTON SPA 1550-1. BORG & BECK COMPANY LTD MANUFACTURERS OF CLUTCHES. Registered Office BROCK HOUSE, LANGHAM STREET, LONDON, W. 1. WORKS: Tachbrook Road. LEAMINGTON SPA. Warwickshire. Directors E.{Mr Elliott - Chief Engineer} B. BOUGHTON. W. EMMOTT. D.{John DeLooze - Company Secretary} T. BROCK. Your Ref.................... OUR REF RTS/HTB/EA 8th April, 1935. GB538 Messrs. Rolls-Royce Ltd., DERBY. Attention: Mr. Grylls. Dear Sirs, We have pleasure in confirming the visit of the writer to your Works on Friday last the 5th inst., and thank you for the opportunity afforded of discussing proposed 10" and 11" clutch applications, as outlined on your Drawing NSH.4435, copy of which was handed to the writer. It was understood that your flywheel material would be .6 carbon steel, friction surface being ground polished, and would confirm that this should give entire satisfaction. We further understand that it is proposed to use self-sealing journal ball type spigot bearing housed in the crank shaft, and in view of this consider that the special oil slinger previously suggested to be incorporated in the driven plate hub will not now be necessary, and furthermore by eliminating this slinger additional clearance will be provided between the driven plate damper springs and crank shaft/flywheel retaining nuts which we feel desirable. It is noted that you have now incorporated our standard type of driven plate hub, and as agreed we will arrange for these to be cadmium plated. With regard to the release bearing carrier arrangement, it is understood that you will arrange to manufacture this particular item, and we suggest that both the nose extension and also the bearing housing be made in the form of an iron casting. With regard to the question of lubrication of the release bearing, our usual practice is for grease to be used for this purpose, but we note from the remarks | ||