jack plate

[procraft]

how does a jack plate help a boat what does it realy do

 

[FlippinManiac]

A jack plate allows you to raise and lower the motor to change your performance.

 

[procraft]

thanks and emoWelcome to the forum

 

[FlippinManiac]

Thank you emoToast

 

[Carl Guffey]

<font face="georgia,palatino" size="2">A couple of things performance wise, but the reason I went with a hydraulic jack plate is that I can start in 17" of water and then lower my unitas the speed increases. I found out about this on Kentucky Lake. I was idling out from some spots and it would take me a hour or better sometimes. I noticed boats starting in the back and running to deep water, something I just couldn't do. I started asking around and it seems that all of these people were running hydraulic jack plates, problem solved. Needless to say running in and out of some of these places is not for the faint of heart. You need to know an area before running in or out of it and even then it will get you.</font></p>

<font face="Georgia" size="2">There is nothing like having a non-boater look out of the boat as a stump flashes by at 5 or 6 feet. I was a non- boater in a BASS event on Pickwick and my boater decided to go to the back of Bear Creek. Not under the first bridge but under the railroad bridge and beyond. I could stand and spit on both banks, but we were catching fish. We would have been idling for hours just to get there, it took ten minutes</font> <font face="georgia,palatino" size="2">from the front of Bear Creek to the back.</font></p>

 

[Auburnwes]

Also a jack plate can give you more setback which is the distance between the back of the boat and the engine. Certain boats need a certain amount of setback to reach its maximum potetial. When you see jack plates listed a 6" jp means it will add 6" of setback.

 

[Liveliner]

As your boat runs across the water there is an arch formed from the bottom of thetransom. Your engine runs in that arch. The further away from your transom the higher the arch, Therefore when you set your engine back you can raise your engine and still keep your prop in the water. The further you set your engine back, the Skinnier you can run.

 

[procraft]

ok my boat is a javlin 377a it is 18.5 long and has a 150 it getsunstable at 60/63 when siting still and trimed all the way down the pee hole is in the water what will a 6 inch jack plate do for for me

 

[Liveliner]

procraft - 10/19/2010 10:21 AM ok my boat is a javlin 377a it is 18.5 long and has a 150 it getsunstable at 60/63 when siting still and trimed all the way down the pee hole is in the water what will a 6 inch jack plate do for for me

</p>

With your engine setting that deep, sounds as if you have a bunch of room to play with. Is your engine bolted onto thetransomin the top holes now and all the way down. It really depends on where your water pickups and prop are in relation to the bottom of your hull. If your engine is running too deep that could account for some of your squirrelly activity at 60 mph.</p>

 

[Auburnwes]

A good starting point would be to call boat manufacturer and see what they say, They should be able to tell you if and how much setback will help you. If I'm not mistaken Javelins are made by Stratos.

 

[wrechin2]

A too deep of engine will cause the boat to chine from the turbulance of the lower going through the water. One of the first things to do is determine if your transom is strong enough for a jack plate. If your boat has a weak transon, you can easily break it. Here are key points of a jack plate.

1. leverage from weight of the engine being transfered back. This changes the center point of your boat further back causing the bow to lift with less trim. This allows for more power to push the boat instead of lifting.

2. Cleaner water. The further back the engine is, the "cleaner" the water. This means less aeration so the prop gets a better bite. This better bite will help lift the bow and cause the prop not to blow out as easy in a hard turn.

3. Adjustability of height. Some props like to run closer to the surface than others. This allows the engine to be raised or lowered to "tune" the prop to the boat. This will also take away some of the turbulance that will induce chine walk. In most cases the higher engine heights will result in a stronger hole shot allowing the engine to spool up quicker having a harder launch.

just my .02 on the subject.