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).
The Stutz induction, water cooling, and ignition systems, with a diagram.
Identifier | ExFiles\Box 23\5\ Scan039 | |
Date | 16th December 1927 guessed | |
contd :- of induction system used. The vertical twin riser pipes are generously exhaust-jacketted, the exhaust gas supply being obtained from two special exhaust ports, from numbers 4 and 5 cyls., cast in the cyl. head on the intake port side. As twin exhaust manifolds are used, one for each four cyls., the flow of exhaust gas through the hot spot can only be regulated by the alternating exhaust pressures in the two manifolds. Twin induction pipes are used, the inner one supplying the four centre cylinders and the outer one the four end cylinders. Both the induction pipes and the hot spot are in one aluminium casting. Text from diagram: STUTZ INDUCTION SYSTEM EXHAUST PORTS FOR HOT-SPOT HOT SPOT FIG VI WATER COOLING SYSTEM. An orthodox centrifugal water pump is used driven from the dynamo which is in turn driven by the accessory sprocket. A thermostat is included in the top water pipe; it closes a butterfly valve in the top water pipe when the water is cold, no by-pass for the water for when the valve is closed is provided. A cellular type radiator is used. The water capacity is 7 gallons. IGNITION AND ELECTRICAL. Dual battery ignition is used, the system being by Delco. One distributor head with two contact breakers and two coils, serves the 16 plugs. A hand ignition advance is augmented by a governor advance incorporated in the distributor body; the governor advances the cam. The hand control gives an advance of 40° and the governor a further contd :- | ||