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).
List of main modifications for the R.R. Semi-Expanding Carburetter - PH.II, sent with blueprint LEC.3026.
| Identifier | ExFiles\Box 13\3\ 03-page398 | |
| Date | 15th March 1932 | |
| 87080; RECEIVED 1932 MAR 18 BY.{R.W. Bailey - Chief Engineer} c. HJW. c. Hs.{Lord Ernest Hives - Chair} c. RHB. ------------- E/JNRL/HP.15.3.32. ----------------- R.R. Semi-Expanding Carburetter - PH.II --------------------------------------- We send you herewith blueprint LEC.3026, so that you may get the pattern alterations in hand. The main modifications are:- (1) The petrol supply for the slow running jet is taken from the diffuser. (2) Increased length between the throttle and the diffuser venturi, the uptake being shortened the same amount. (3) A dish is formed outside the choke tube to suck up surplus petrol. (4) Restoration vent added between air intake and float chamber. (5) Clearance of float in chamber increased. (6) Freer petrol ways to the jet. E.{Mr Elliott - Chief Engineer}/JNR.{Charles L. Jenner} | ||