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Ok finally decided to get a new boat. Picked up a Lowe Roughneck 1752 with 60hp Mercury. Added powerdrive v2 ipilot and 2 hdi7's and a few rod holder's and away we go.
Fish were Hit or miss on Russell Friday although we managed to get 35 or so taking 10 home for a quick meal.
Now to get the boat bow from bouncing when I try to trim the motor.
Now if I can get pictures to upland from my phone
Bounce may be indication you have too much weight loaded forward. Either that or boat is under powered and motor cannot fully lift hull out of water at high speeds. Mine does this, especially when going into wind. Trim tabs may help. I just slow down a little, and save gas! LOLQuote:
Originally Posted by kg4bmk
Good pics and report. Congrats on the new ride :ThumbsUp
Usually bounce in front is from to much weight in rear, or not enough weight in front, or having motor trimmed to high. I have the Lowe 1860 powered with a 60 Merc. it too was porpoising the first time I took it out. On the back of the transom are two trim tabs, take a hammer and bend them down about a half inch or so and try again. Make sure motor is trimmed all the way down to start with. Once on plane, raise more until optimum speed and ride is reached. If still a problem, bend tabs down further.
I'm with the others on this.Id try to trim the motor Down. I think about any boat will do that if the motor is trimmed too high,also it will get on plane faster with the motor trimmed down.
My motor is set up on a jackplate and with the motor trimmed all the way down my boat doesnt porpoise. I can even trim it up a tad IF I also control the speed with the throttle. That's with me in my boat alone. With a passenger up front I have more lee-way about applying more trim to the motor. By trimming I get the same speed with less RPM's ideally.
more weight to the front will allow use of higher trim angle
Thanks inkdabber. I was wondering about bending those down. I will give it a try. I may raise the motor up one hole as well.
maybe add one of those dole fin things on the back of the motor if it can be trimmed down a bit.
I have one and it really helps get on plane.
Trim Tabs & Hydrofoils | Boat Engines | West Marine
by the way, congrats on the excellent boat and set up
The dealer bolted the motor on in its lowest position. I am going to raise it one hole and bend the trim tabs down and give that a try. It is close but I think it can be better.... On some things I think I have OCD
On the bolt holes, ideally you want the top of the cavitation plate running level with the bottom of the keel. Check it with the motor tilted/trimmed down. I would check it before raising bolt holes. Most folks set up the motors that way.
Think of porpoising as the hull falling off of and then returning to a position of riding on its rear pad. Trim tabs and foils can help. Weight distribution is also a big player. This is one reason the batteries on a bass boat are located at the rear. Sometimes a boat is going to porpoise at a certain RPM and you just have to trim through it or raise speed past that point. Kind of like a harmonic. More power/thrust is often a cure as well.
Thanks for all the tips guys. I raised the motor mounting position 1 hole and bent the factory trim tabs down about 1/2 inch and all is good now.