Specification for an Elliott-type speedometer driven by a raw hide belt.
| Identifier | ExFiles\Box 8\2\ 02-page05 | |
| Date | 18th August 1916 | |
| EXTRACT FROM R4/W18316 of AUGUST 18th, 1916. RE X. 613 - SPEEDOMETER (ELLIOTT). SPEEDOMETER. - This is to be driven by raw hide belt sewn with wax end, in such a way as the sewing does not touch the pulley. This is to drive to special fitting design and made by R.R., carrying theother belt pulley and reduction gear into which the flexible shaft is attached from thence to Elliott's speed indicator, specially made for the proper sizes which are to be non-adjustable. The flexible shaft leaving the speed indicator on theinclined dashboard at the best angle of drive. The flexible shaft to run at one-third or one-fourth of the engine speed, and the fitting before mentioned to have a non-adjustable pulley about equal in size to that on the propeller shaft." R. {Sir Henry Royce} | ||
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).