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).
Peregrine carburetter and induction pipe, clarifying performance expectations and design simplifications.
| Identifier | ExFiles\Box 1\10\ B001_X106 TO X 110-page072 | |
| Date | 24th August 1932 | |
| X108 To R.{Sir Henry Royce} from E.{Mr Elliott - Chief Engineer} c. Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} Hs.{Lord Ernest Hives - Chair} By.{R.W. Bailey - Chief Engineer} re Peregrine carburetter and induction Pipe. With further reference to our memo E.9/HP.23.8.32, the third paragraph should read that we expect the same maximum performance as with the single S.U. but something in between that given by the single and double S.U. Induction Systems at moderate speeds. The latter expectation is based on the better distribution we should obtain with the manifold tee joint being vertical and the carburetter being fitted with a diffuser nozzle. This should also improve the consumption over the S.U. Referring now to the mixture and starter controls, we should like to explain that the throttle edge jet and choke have been arranged on LeC.3157 with a view to simplifying the Peregrine carburetter as much as possible. We rely on shutting off the air to this jet as before for starting plus the enriching of the main jet, and for running it is assumed that the adjustment of the throttle edge mixture can be fixed. E.{Mr Elliott - Chief Engineer} | ||