MF14 - Minnesota

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walkabout_slp
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Re: MF14 - Minnesota

Post by walkabout_slp »

The 6" one at the back of the seating area is for a watertight storage compartment.
Another 6" one will be on the deck by the transom for access to rudder gudgeon bracket access.
The 2 5" on either side of the daggerboard trunk are there to help dry out the interior of the boat if water does get in.

I have been reading a lot on a Sunfish forum, where they restore old sunfish and it is something they really recommend so that you can dry out your boat. Also I have looked at a few old Sunfish (to buy) and the biggest issue (besides the boats being 40 years old) was that the insides of the boats were moldy and wet.

fallguy1000
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Re: MF14 - Minnesota

Post by fallguy1000 »

I plan a 6” port for motor bolt access and two more for aluminum bracket access in each hull. Probably one over fuel tank senders.

All the best of luck.
My boat build is here -------->

viewtopic.php?f=12&t=62495

walkabout_slp
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Re: MF14 - Minnesota

Post by walkabout_slp »

Made some progress since my last post.

1. glued frames to centerboard trunk.
2. filleted frame and stringers together. 20 fillets so far.
3. rough cut side panels
4. attached two 4x8 1/2" plywood sheets together with fiberglass splice for the bottom panels

next steps:
1. cut bottom panels from the newly glued up 4x16 plywood
2. glue up side panels with fiberglass splice, then cut them to specifications.

Epoxy Fillets:
I read a lot and realized there were many ways to do these, but this is what I ended up doing:
1. sanded the area where the fillet will go as I had epoxied this prior to assembly so that I could get epoxy within the interlocking joint/slots
2. brushed on epoxy 2" either side of the joint.
3. wait 25 minutes.
4. Added 1/2" radius fillet of thickened epoxy
5. wait 25 minutes.
6. pushed glass take into corner and sides. tried not to push too hard on the fillet.
7. Brushed on a layer of epoxy over glass.

Image
Last edited by walkabout_slp on Sun May 19, 2019 4:51 pm, edited 1 time in total.

Jeff
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Re: MF14 - Minnesota

Post by Jeff »

Good stuff Walkabout!! I just hope you are staying warm up there!!! Jeff

fallguy1000
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Re: MF14 - Minnesota

Post by fallguy1000 »

Fillets n tape joins look good. I’m assuming you are hooking them again up or down; so I’d use peelply if it were me.
My boat build is here -------->

viewtopic.php?f=12&t=62495

walkabout_slp
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Re: MF14 - Minnesota

Post by walkabout_slp »

Fallguy, I am not sure what you mean by "hooking them up or down". Can you explain?

I also thought people used peel ply to create smooth surfaces that will be visible? Most of the fillets so far will be inside the hull, so I don't think it matters how smooth the surface will be?
Or are you referring to the use of peel ply that leaves a texture so that you can put further coats of epoxy without sanding?

fallguy1000
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Re: MF14 - Minnesota

Post by fallguy1000 »

Just seems like that joint will have more fillets near, on or over it. If so, peelply is a way to make the joint easier to fillet to.

I don’t know the part you are making, but looks like hullstructure you attach later.

Pp isn’t the only way to go, but can make some things easier.
My boat build is here -------->

viewtopic.php?f=12&t=62495

walkabout_slp
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Re: MF14 - Minnesota

Post by walkabout_slp »

More progress made.
  • Side and bottom panels cut. FG joined.
    Attached transom to frame.
    Temporarily attached side panels to transom, deck and bow.
Image

It was at this point that I realized that I made a mistake cutting the forward frames. I cut them 1" to short on the sides. I was able to fix this by laminating/gluing new frames to the existing ones.
Image
Last edited by walkabout_slp on Sun May 19, 2019 4:59 pm, edited 1 time in total.

Jeff
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Re: MF14 - Minnesota

Post by Jeff »

Good fix walkabout!! Jeff

walkabout_slp
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Re: MF14 - Minnesota

Post by walkabout_slp »

I cut the bottom panels and installed them.

Image
Image

I did run into a slight issue with the shape of the bottom panels. When I tried to install them they did not completely cover the bow.
I had 2 options to fix this:
1. Install them as is and use epoxy/filler to fill the 1/2 gap at the bow
2. Cut the bottom panels short (where they were touching the side panels) and then add new sections of plywood to enlarge the bottom panels.

I went with option 2 and you can see the results in the 1st photo.

Next steps are :
1. Turn the boat over
2. Remove the deck
3. Apply fillets/tape to all seems on the inside of the panel to attach the bottom panels to the side panels and also to attach the frames to the bottom panels.
4. etc
Last edited by walkabout_slp on Sun May 19, 2019 5:00 pm, edited 1 time in total.

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