"The new Cats idle at 550 and max at 1860. They're equipped with 4-to-1 reduction transmissions, giving shaft speeds of 137 to 465. Thus, a slower "dead slow" and a faster "flank" speed. "Full speed" is normally about 410."[/QUOTE]
Yup, and Do Not Try To Run These Engines In A Reverse Rotation, as you will foul the air filters, and create a very thick black plume of smoke, reversing their intended intake and exhaust functions!
The old Enterprise engines had a mechanically engaged system to change the camshaft and valve timing to facilitate running them in a reverse rotation. Now, if one of these mechanical links ever failed, between the Captains bridge, and the engine room, The M/S Mount Washington would long and since have pushed all of us over into our Neighboring Vermont by now!
Terry
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