Page 10 of 20

Re: 1981 Dolphin 20' Commercial

Posted: Fri May 31, 2019 1:13 pm
by MSRiver
fallguy1000 wrote:
Wed May 29, 2019 11:17 pm
I went back to Jun 27 of last year and that will be tricky...

You might consider using a hot melt gun to spot the blocks.

The gun is cheap.

You would put the cap on and then take the block up to the cap where you thought it was good and just out a dab of hot glue on the block. It looks like the blocks might be angled even. Anyhow, spot the blocks and mark them well and break the glue bond and epoxy them in back where you wanted them. Hot glue is temporary.

How was the cap on before? Was it screwed through a rubrail?

Whatever you end up doing, it is all prep and the glue work with the cap is one shot.
Yes is was just screwed through the rubrail.

After getting the back trued up and moving forward i realized something just wasn't right I've run into a big problem!!! And i have no idea how this happened since i measured it and measure it and measured it then leveled that many times constantly checking everything!! i will say the starboard side is fine and lined up right couldnt have asked for better. The port side however must have moved on me at some point and i never picked up on it but and it flatted so i lost the arch out and rolled. Saying that supposed to be high inside and low outside, it twisted and now the inside is low and outside high. I already tired to see if a block would push it up there's no quick and easy for it.

Image
Image
Image

So trying to figured out what i should do.
Its only about a 6-7' section where it would need to be corrected. Only thing i could think of without sanding it all back down and redoing it is id have to make some cuts say every 1.5' or so also make it 1/4" 3/8" wide on the bottom on the inside maybe all the way over the round part then try and push it and have blocks in each section. Might have to cut on the outside too.

Re: 1981 Dolphin 20' Commercial

Posted: Fri May 31, 2019 2:00 pm
by fallguy1000
When you are done, you'll be able to write a book on cap rebuilding!

Re: 1981 Dolphin 20' Commercial

Posted: Fri May 31, 2019 2:59 pm
by MSRiver
Fall guy your not lying I’m ready to move past this part!!!! And get to the rest of the boat!

Do you have any idea on what I should do about the cap? Any way to salvage it now.

Re: 1981 Dolphin 20' Commercial

Posted: Fri May 31, 2019 5:57 pm
by Fuzz
Cutting some slits in it to let it bend as needed is not the end of the world. I would sure try it before scrapping it all together.

Re: 1981 Dolphin 20' Commercial

Posted: Fri May 31, 2019 6:29 pm
by fallguy1000
Fuzz wrote:
Fri May 31, 2019 5:57 pm
Cutting some slits in it to let it bend as needed is not the end of the world. I would sure try it before scrapping it all together.
Yes

Best idea is to use a multi tool and cut it and see if you can get it relieved.

I was pretty worried it was going to be impossible.

But cut it some and re-epoxy things after relieved.

Re: 1981 Dolphin 20' Commercial

Posted: Sat Jun 01, 2019 1:01 am
by MSRiver
I’m still thinking about cutting it. But after seeing what I I needed to do to make it move,”sweet boat love” as one could say. Lifted the whole cap wedged and 2x4 under it and hung off it to be where it should be. I’m kind of thinking it could work if I put one full length block/ rod holder there then have other short blocks spaced closely together and glass them in help spread out the tension. 1. I’m worried About that much tension. 2. I really need to take it off the boat so getting to the right height without having to hold it up everywhere on all the block as well evenly. I also need a line to come off because there are not straight lines to match both inside and out, I have my water line out side to match a floor but not anywhere else. And best line I can come off is either the top of the hull which I’ll have to get level, or the floor to at least get inside the boat. So while the bottom of the boat is not going to get affect by the cap “on it” but just not in the exactly correct place. So figured I could move forward finish up the transom, do the stringers, do the tank and all that finish up the floor, then have a more comfortable spot to get all the blocks even gradually going up the whole way but evenly. And have the big blocks on the floor where they are going to be and not just wedged against the stringers.

Re: 1981 Dolphin 20' Commercial

Posted: Sat Jun 01, 2019 8:56 am
by fallguy1000
Don't forget ratchet straps are builder's friends.

I have a picture, but not allowed to post them here.

Re: 1981 Dolphin 20' Commercial

Posted: Wed Jun 05, 2019 12:36 am
by MSRiver
I might have made a small error as i was thinking too far ahead. I was finishing up the transom had a few bad air pocket spots i was not happy with so just sanded down and patched. Which i said while Im at it i added another 2 layers of 1708 and taped in first 1708 with 6" with 12oz overlapping half and half then second 1708 taped 6" 12 oz tape half and half followed by another later of tape overlapping 3" then another 3" overlap for A total of 9" roughly.(200HP SHOULD BE NO PROBLEM) But the last layer i put mat glass down so it would finish nice and i wouldn't be sanding off the 1708. I'm kind of thinking i should have held off on the mat since i will have to tab in stringers to this. Tell me if I'm wrong saying if Im tabbing stringers to the transom i want that glass holding on to the other 1708 and not just mat?

Finally moving to something difference i started sanding the inside hull for when i will lay glass over stringers onto the floor and another two layers of 1708 on the hull in the middle just for a little more stiffness and safety if i ever do hit a little something (like a big oak The River likes to bring down my way). It really got me thinking about the condition they are in, and i will post some pics to see what yall think. I just started thinking about some of these areas that were "resin starved" in the bottom corners and a few spots on the sides of them that essentially i would have to sand out completely and fabricate or mold the sides, similar to what i did on the cap to bring the sides down.

IF yall think they are in that much of a mess and would be a more time efficient to just cut them completely out and order some composite pre-made stringers to just throw in and glass down. Compared to spending a bunch of time sanding and molding to repair sections patch and fill with foam and glass over. I have also thought about the floor but I can ask that depending on the circumstances.

Re: 1981 Dolphin 20' Commercial

Posted: Wed Jun 05, 2019 12:50 am
by Fuzz
Post up some stringer pictures, we have better guesses that way :wink:
If you are using epoxy on the transom and stringer work I think you would be ok either way you laid the 1708.
That stuff is a pain to wet out with epoxy.

Re: 1981 Dolphin 20' Commercial

Posted: Wed Jun 05, 2019 8:45 am
by fallguy1000
Sand the area you tab to with 36 grit floor paper or 40 grit paper.