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).
Investigation into Stromberg carburetter chokes jamming due to back-firing.
| Identifier | ExFiles\Box 122\2\ scan0296 | |
| Date | 13th December 1937 | |
| Rm{William Robotham - Chief Engineer}/GR.{George Ratcliffe} c. Rm{William Robotham - Chief Engineer}/FD.{Frank Dodd - Bodies} 1033 Rml/R.13.12.37. STROMBERG CARBURETTERS. We have had one or two cases recently where Stromberg carburetters have jammed their chokes in the closed position, due to back-firing. When the choke is jammed the car, of course, is completely out of action. We think this is a very serious fault of the Stromberg carburetter, and should like you to undertake an investigation to see what we can do to overcome the fault. We think the investigation should follow two lines:- (1) To see if we can get a choke sufficiently strong to stand up to back-firing. (2) To see if a blow-off valve in the choke can be made sufficiently large to prevent damage. Rm.{William Robotham - Chief Engineer} | ||