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).
Internal request to order two Stromerg carburettors type DA.42 with detailed setting specifications.
| Identifier | ExFiles\Box 20\9\ Scan073 | |
| Date | 6th January 1936 | |
| To Roy.{Sir Henry Royce} X1033 Hs{Lord Ernest Hives - Chair}/CTS.{C. Trot Salt - Carburation}3/JH.6.1.36. Will you please order from the Zenith Carburetter Co. :- 2 Stromerg Carburetters type DA.{Bernard Day - Chassis Design}42. (with hand controlled starting) Specification (setting) Choke. 1.25" Main discharge jet. .060" Bye pass jet. .048" Main discharge jet L.885 but with one 58 idle feed hole, Bore 36 Air bleed. 70 Idle tube. 64 Idle discharge, top. 64 Idle discharge, bottom 70 Pump jet. 70 Needle valve seat. 130 Hs{Lord Ernest Hives - Chair}/CTS.{C. Trot Salt - Carburation} | ||