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| Waterwolf,
Couple of things you can try.
First would be is to increase prop diameter, but not change pitch. Every 1/4 inch adds up to (I think) 100 rpm or so. But...without knowing your max rpm range, this could make for too large diameter. The next step would be is to consider adding cup to the prop, unless it already has it. If you have little or no cup, you will not have as good of handling, and the cupping will help to cure this.
Third, is to go up in pitch but keep the same diameter. Going up 1 inch is pitch is usually between 100 to 150 rpm loss. So..options are there.
Depending on where the motor is sitting on the hull, you may be able to go up a bit in pitch (3-4 inches) and raise the motor up to the third hole or so...uless you have done so already. In doing so, you will off-set things a bit, but you gain speed and efficiency.
If you could, drop a post on where your motor is on the transom,the gear ratio of the motor, the prop you are running(also if cupped, steel, etc) and the max rpm your motor is supposed to run at and I can run some numbers for you to see what might be a good set-up.
Steve | |
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