Jbower said:
Are you getting porpoising? I gained 2 mph with my 24 prop but need to raise the motor back up to gain some rpm but can hardly trim the motor without it bouncing. I put my trolling motor batteries up front to help and only did so much. It’s been cold and rainy here so I haven’t had much time to actually test and tune. I’m hoping raising the motor back up helps a lot
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Actually you are causing the porpoising, by putting the batteries up front. There is to much weight up there for the size motor and prop to pickup. These boat are weight sensitive. With there smaller hp combos. Your motor and prop is trying to pickup the bow when you trim out. And doesn’t have the power or bit to pickup the bow and hold it there. It try’s, and can for a few seconds and then looses bit and the bow falls. This is porpoising. Now if you want the weight up front. You have to set the boat up to run flat. No bow raise. This is accomplished by motor height and trimming out only to the point of level cav plate to level hull. Or otherwise known as neutral steering. So first tuck the motor under to come out of the hole. And trim out only till it starts to porpoises. Then trim down till it stops. Try to few the relation between the cav plate and top of the water. You want to move motor up till it’s flush or slightly under. From that point you work on prop size to get rpms in the max range for the motor. The boat will be slower but will driver great. Other then all this put 70% of weight in the boat behind your driver seat. And run the boat with a raised bow. Hope this helps. It is a lot to change The characteristics of a hull from One Direction to the other. But it’s all in how you want the boat to preform best with the way you have it set up.
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