• If you log in, the ads disappear in the forum and gallery. If you need help logging in or getting registered, send request to: webmaster@southernairboat.com

What does a hull jack do?

C

Corey Harris

Well-known member
A read a post that sounded like there is some sort of device where you can adjust how much curve/cup you have on the bottom of a hull. What are the pros and cons? Do all the hull makers do this?

Anyone have a photo of what it looks like?

Thanks,

Corey
 
I installed jacks on all my boats. Never really noticed any difference on dry ground, but sure helps in deep water. Stumps and cypress knees will bend the bottoms alot easier without jacks. Like mentioned before, it will keep the hooks out or at least allow you to jack them out, which will help you in deep water.
 
Midnight Rider, nice pic of your jack. Would it be better to have it run all the way across to each chime or outer edge? Do some boats have more then one? If i have a hook I can't get out can i build a jack to put pressure right where the hook is and gradually push it back with the hull jack? All newbie questions. Thank you. Bud

I have a rear deckover also and am thinking it will be difficult to get one in where I need it.
 
ak, My bottom is pretty flat so, the one in the center works fine for me. I have seen bigger and wider boats with them across each stringer. You should be able to correct the hook with a jack too. Just adjust a little at a time.
 
they keep your bottom where it rides the best and it's a personal preference where you want your boat to ride me personally i like three and jack the piss out of the front and if it porpoises you can actually pull a pocket in rear to make it ride smooth just something you have to play with but i think is much needed even you boat rides good then it'll keep it there
 
Corey:

With my boat having a hull jack is a plus. In deep water with the hull jacked a bit the boat runs more freely . It also seems to set up better for a tight turn , sort of pivots and leans over more easily , gives it better , quicker steering response.
 
Are jacks usually made of steel rather then aluminim tubing? I need to make up a couple and want to be sure I can do it correctly. Bud
 
akblackdawg said:
Are jacks usually made of steel rather then aluminim tubing? I need to make up a couple and want to be sure I can do it correctly. Bud
Click to expand...

I'd make it out of steel. However if braced good, a strong one could be made of aluminum or even emt. Search the images on this site for some pics of different styles and designs. You want the jack to be as sturdy as possible so it doesnt flex.
 
Here are some jacks in my work boat.



JACK2.jpg



JACK1.jpg

That is the batteries and there in another set of jacks behind them just like the one above.
(I know my boat needs cleaning, but it will just get dirty again Monday)
 
Now on Lakerunners pic's I see 2 different styles. One with pads pushing down directly on the hull, and the other with angle iron more conventually pushing down on the stringers. Seems pushing down on the bottom directly might cause problems. Any thought here? I'm thinking that if I could place the flat ones over my hook, it would gradually push out the dent as I use it and force it down further. My boat has a 1/4 deckover in the rear and not enough room for my fat a$$ to slide under it to do much direct work on the bottom. Bud
 
I ajust mine while its sitting on the trailer. My buddy lies under the trailer and watchs the bottom as I jack it down. After that I run it on bare ground (no grass) and look at the tracks (slide marks) of boat. That will tell you alot.
 
cntry141iq said:
AK you can't get sarah palin to crawl under there for ya huh LOL
Click to expand...

I think she would be more adapted at that then in being a half term governer or wannabe Pres. But now she is out of state trying to rack up as many $100,000 /nite speaking engagements tht she can book and keep herself in the news to help her book sales. Bud
 
You must log in or register to reply here.
Back
Top