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Triple Expansion Steam Engines1. Cylinder Volumes:HP = 1.0IP = 2.6LP = 7.0To keep the LP Cylinder a manageable diameter it was split into 2 cylinders at 3.5 x HP volume giving a 4 cylinder triple expansion engine normally arranged from front to back LP,HP,IP,LP.With this arrangement balance was achieved by setting the cranks at:Between Forward LP and HP 1660Between Forward LP and IP 2700Between Forward and Rear LPs 700 In addition suitable counterweights were added to the crankshaft.With Titanic and Olympus, not shown is a turbine which utilised the LP exhaust to drive the centre propeller. For manoeuvering the exhaust was switched over from this turbine and sent directly to the condenser. This made emergency reversing/stopping difficult as until this exhaust was removed, the turbine continued to move the centre propeller ahead. Transfer was accomplished by some big hand operated valves!HTHRegardsBob
G' day Maryak,I am a bit confused with order of arrangement for each cylinder, in the attached first photo Cylinder No.-1 is not at the same timing as Cylinder No.-4. Your numbers show each LP ( 1 and 4 ) are each at 70 degrees. In the photo, No.-4 appears to be close to 160 degrees ( or so ) opposite from No.-1. It looks like No.1 and No.3 are the same. Am I looking at this incorrectly?Thank you,Thomas