Quote:
Originally Posted by captbone
The thrust is all the same. If the thrust was higher the boat would go faster. The speed in which the gearcase travels through the water or the amount of thrust producted at a given RPM is not relevant since the max thrust would be identical at WOT as long as it can reach the recommended wot rpm and peak hp.
Outboard engines that push barges, heavy boats, or tow a lot do not have a decrease in life simply because the engine can only product so much load, torque and thrust. Propped correctly, their is no increase in wear, tear or load regardless of what the outboard is pushing or the prop. Max is at WOT regardless of prop.
Just my 2 cents. I would gladly chip in to see the owner run a 13 pitch prop on one of the twins to see it break 30mph.
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Let me take my little brain off the short bus for a minnow. If 1 LU is being asked to push the same weight as 2 , is that not increasing the loads of torsion, shear, and compression?