Quote:
Originally Posted by Canuk
hey guys, i'm thinking of making a jackplate for a 16x48 modified V jon boat and 25hp honda as I want to run a little safer in skinny water.
I would like to get it as close as I can to start, so any advice on how much i should/can go up and back?
Who has experience with these?
thanks for the advice/comments.
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Conventionally Mounted - If the prop is, for example 11" in diameter, you will need the full radius of the prop below the boat.
For best performance (for a conventional prop set up) they are a few inches lower yet. Keep in mind you will loose thrust if the water flow is impeded by the draft of the hull. If you dont follow this rule - this creates cavitation.
The further away from the transom you are - the higher up you can come, but if you had a 6" jack plate (away from the boat) - you can gain 2"-3" (in height) or so.
40% is the rule of thumb.
Lots of good articles on the net - have a look.....