Hunter 260 compression post base

Jun 8, 2004
10,531
-na -NA Anywhere USA
Like an old dog I learned something here today.
Clint, first, the top of the centerboard trunk housing is above the water line and wonder how water was coming in but I think I explain. First the two bolts holding down the forward section of the plate are screwed into an aluminum plate encapsulated in the fiberglass holding that down with a very tuff sealant called 5200. In this case, it is important to use but not on the bolts as it will be next to impossible to remove unless you have a long extended 1/4 inch socket and I would use a 3/8 socket vs. 1/4 which I mean socket set, not the bolt head as that is a probably a 7/16 bolt head. The other end is the large bolt holding the centerboard bracket/centerboard in place and that will take a 1 1/8 socket to take off. I would run a tracer line when you pull the centerboard housing and board down tied to the 7/16 line used for the centerboard (not 1/2).. You will need to remove the centerboard and bracket and when you take it off you might have to wiggle it side to side as it compressed in there. when the boat is up on the straps make sure the straps are tied together on the side so they will not slip off the hull.

In addition, look at the base plate which has a short piece of welded tubing to accept the mast compression post. I am not sure what year is your boat but look to see if there is a screw hole about in the middle. If there is a screw which is a #10 remove it and there will also be one forward which is pain in the butt to get off. Later models did not have the hole or the secrews were left off.

If the #10 screws were left off, I have seen water come up thru that pipe with water splashing into the top of the centerboard housing and leak into the boat.

I really need to speak with you sir on some dos and don'ts as my hands are starting to crimp up. Send me your location, good time to call and phone number. That information is not shared with anyone even my wife and when the project is complete, I discard it for safety. Like I said we need to talk before you drop the centerboard sir. You will find I may be a good source of information for you in the future which you will have my phone number but one request do not share it. that is up to me to give out as I am protecting myself and contacts from those who do not need it .;

dave condon alias crazy dave
 
May 17, 2016
13
Hunter 260 Lake shelbyville, il
so after gaining invaluable knowledge from this helpful forum. I've decided to seal around the bolt and take regular guys approach by applying backer rod around the cavity and sealing it from the top. I had no intention of dropping the centerboard for maintenance this year. So if it leakes during use this season Il tackle dropping the centerboard next spring and reseal the compression plate. Thank you for all the helpful advice. This forum is definitely an asset. Hopefully Il be able to repay it forward in the future.
 
Jun 4, 2004
392
Hunter 31 and 25 and fomerly 23.5 Stockton State Park Marina; MO
One thing to be aware of with these water-ballasted boats is that both the penetrations ie the up-haul and the bracket bolt go through the ballast tank and the hull. This means you could potentially seal the hull from outside water leaking in and yet still have ballast tank water leaking into the bilge. ( Yep, I know this from experience) If you don't get the clearances around the bolt and up haul through hole sealed well water will come up when heeled and if the sealant under the plate mating surfaces isn't sound you will leak water here from either source.
 
Jun 8, 2004
10,531
-na -NA Anywhere USA
Thanks Dennis for the photos and as you explained it is not easy nor a job I would suggest to anyone in the future to first check the #10 bolts are in place holding the compression post to the base and around the seal of the base plate by filling with 5200 before taking the base plate off.