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).
Observations on carburetter testing apparatus at Strombergs.
| Identifier | ExFiles\Box 20\9\ Scan069 | |
| Date | 2nd January 1936 | |
| X1033 To E.{Mr Elliott - Chief Engineer} c. to Wor.{Arthur Wormald - General Works Manager} c. to Rg.{Mr Rowledge} c. to RHC.{R. H. Coverley - Production Engineer} Ha/Gry.{Shadwell Grylls}1/KW.2.1.36. Carburetter Testing Apparatus at Strombergs. Strombergs were not willing to supply us with drawings or photographs of their aircraft test equipment. However, they showed me the apparatus and explained its functioning. Similar but less accurate or well made apparatus exists for testing experimental car carburetters, so that before any running is done on an engine, the mixture is known to be almost correct under all conditions. Attached is a sketch of the aircraft equipment. The venturis were calibrated by the U.S. authorities and Strombergs do not know by what method. Readings are taken every 5° of throttle opening at various air flows, and adjustments are made to the carburetter to give the correct air fuel ratio under all conditions. Ha/Gry.{Shadwell Grylls} | ||