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).
Rejecting a Hans Renolds chain sample and specifying requirements for a lighter, more cost-effective vee belt drive for aero work.
| Identifier | ExFiles\Box 55\2\ Scan055 | |
| Date | 17th April 1915 | |
| C O P Y. To M. {Mr Moon / Mr Moore} from R. {Sir Henry Royce} Copy to J. {Mr Johnson W.M.} " " Na. {Mr Nadin} " " Wor. {Arthur Wormald - General Works Manager} for Hy. {Tom Haldenby - Plant Engineer} R7/IB17415. April 17th. 1915. Re Whittle Belts. - M5/G14415. With reference to Hans Renolds chain, we return the sample, and are sorry to say that it will not suit our purpose, being too heavy and expensive. We have now altered the scheme until the horse power is very much less. The chain speed, however, will be equally great. We should want it to transmit .5 HP between two pulleys of the best suggested diameter, the two shafts running at 1600 revolutions, and we believe we shall be able to arrange the drive horizontally, as we fear that a vertical drive would not be satisfactory unless a jockey pulley were used, or the machine were held up by a spring of high rating, so as to keep the slack side of the chain free from absolute looseness. We will send further particulars in the course of a few weeks. In the meantime we think the vee belt will probably work out quite reliable and lighter, which latter is the chief consideration, and as we should probably want 100 sets, we fear that a price anything like £4 would be quite prohibitive. We want a drive, the cost of which would not exceed £1, i.e. the lightest possible scheme for aero work. R. {Sir Henry Royce} Enc. sample chain. | ||