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).
Modifications to the throttle body and carburetter suction chamber cap.
| Identifier | ExFiles\Box 85\4\ scan0020 | |
| Date | 8th April 1933 | |
| - 2 - E.2/HP.8.4.33. be used in conjunction with it to avoid mild steel bearing on mild steel. We find that the brass levers are inclined to wear rapidly at this point. RR. will send a modified drawing of the throttle body showing the alterations necessary for making this piece in aluminium, such as bronze bushes for the throttle spindle. A point not mentioned during the discussion is that the suction chamber should be fitted with the type of cap used on the RR. semi-expanding carburetter instead of the S.U. standard cap. The ventilation of the former is arranged so that it is protected by a small skirt turned on the cap, and is not so liable to collect dirt as the S.U. type. We propose to stamp or engrave the cap at Mr. Skinner's suggestion, with a notice advising what oil should be used, such as, "Use thin oil only". E.{Mr Elliott - Chief Engineer} | ||