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).
Specifications for a belt drive from an engine to a dynamo on Admiralty seaplanes.
| Identifier | ExFiles\Box 55\2\ Scan041 | |
| Date | 29th March 1915 | |
| To Wor. {Arthur Wormald - General Works Manager} for Hy. {Tom Haldenby - Plant Engineer} from R. {Sir Henry Royce} Copy to J. {Mr Johnson W.M.} " " Na. {Mr Nadin} " " E. {Mr Elliott - Chief Engineer} MAR 31 '15 COPY. R8/IB29315. 29th. March, 1915. [Signature] Re Aero Engines. (Admiralty). With reference to the belt drive from the engine to the dynamo on the seaplanes, we have to transmit 2 1/2 HP as before stated. Will Mr. Haldenby or Mr. Nadin see that a letter is sent to the Whittle belt people to find out what size of belt they recommend. We estimate the belt speed to be 3200 ft. a minute, and it is intended to run the dynamo at 3000 revolutions per minute. It has a pulley between 3 1/2" and 4" belt centres. Will the 3/4" Whittle belt transmit this power reliably? The drive is a short vertical one, but with every convenience for taking up the belt. R. {Sir Henry Royce} [Handwritten diagram showing two pulleys connected by a belt] Top pulley: 3200 revs. Dynamo 3 1/2" belt centres Bottom pulley: 1600 revs Engine x196 | ||