RMS Titanic Engine - Engine Simulator

Trying to simulate the sound of one of Titanic's triple-expansion 4-cylinder steam engines in AngeTheGreat's 4-stroke gas engine simulator. Since Titanic's steam engines were double-acting, that means each piston stroke was a power stroke. To make a power stroke equivalent for every steam stroke with a 4-cycle engine, you need 4 cylinders in the place of one. 2 of those 4 would be 180° from the other to simulate steam at BTDC. So in a way, Titanic's engines acted like a 16-cylinder 4-stroke engine with only 1/4 of the cylinders. That's steam power! The smallest cylinder (high pressure) has a bore of 54 inches, the medium cylinder (intermediate pressure) has a bore of 84 inches, and the 2 large cylinders (low pressure) have a bore of 97 inches. All with a 75 inch stroke. Titanic's reciprocating engines had a rated top speed of 75 RPM, with her younger sister Brittanic's engines reaching 80 RPM. I used 80 here because the engines on Titanic were likely capable of the same speed. 0:00 Startup / Slow Ahead 30 RPM 1:00 Half Ahead 50 RPM 2:05 Full Ahead 80 RPM 3:25 Half Ahead 50 RPM 4:20 Slow Ahead / Stop