Flybridge Core project

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gitchisum
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Flybridge Core project

Post by gitchisum » Sun Sep 09, 2018 8:44 pm

Pulled the boat and winterized. Had an impulse to start the re-core project on my fly bridge floor. Thought I would find the first layer pretty soggy but found that both layers of core were bad. Should be fun! :mrgreen:

Photo is after digging out both layers in a 4 x 8 section. Think I will use Tricel instead of foam or wood. Anyone with good or bad to say about Tricel, please do. Plan on Calling Bob in the am.
flybridge floor.jpg
flybridge floor.jpg (57.91 KiB) Viewed 1913 times
88 321 Sedan 270 crusaders
2001 Seadoo Challenger 2000
97 Lowe Roughneck 17TC
1948 Alumacraft K14, Evinrude twin 6hp " Still kickin"

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AndyF32
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Re: Flybridge Core project

Post by AndyF32 » Mon Sep 24, 2018 9:39 pm

Wow that looks great. Good idea to go after the whole area at once. I did a small section on mine and now need to chase it a bit further.

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gitchisum
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Re: Flybridge Core project

Post by gitchisum » Sun Apr 21, 2019 6:18 pm

Finally spent the last week putting new core in the fly bridge.
Decided on using Balsa after a few conversations with Bob, Thanks Bob!!!

First pic is first 1" core layer going in.
IMG_20190416_122426.jpg
IMG_20190416_122426.jpg (98.56 KiB) Viewed 1345 times
Then .125 Mat layer glassed in over that.

Then additional 3/4" layer of balsa, which I smoothed with thickened Epoxy before laying original skin back down
IMG_20190418_150856.jpg
IMG_20190418_150856.jpg (53.41 KiB) Viewed 1345 times
IMG_20190419_102216.jpg
IMG_20190419_102216.jpg (60.08 KiB) Viewed 1345 times
Other than fighting the less than 50 degree weather, it went well. Used total boat 5:1 epoxy with good results

Didn't snap a pic after grinding and glassing the top skin, all I have left is to fair and paint.
88 321 Sedan 270 crusaders
2001 Seadoo Challenger 2000
97 Lowe Roughneck 17TC
1948 Alumacraft K14, Evinrude twin 6hp " Still kickin"

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Captrichc
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Re: Flybridge Core project

Post by Captrichc » Mon Apr 22, 2019 5:20 am

Excellent job!!!!Are you going to just fare the cut lines? Or are you going to fill it with epoxy first? I would recommend just using gelcoat. The color will blend after a season or 2 and you wont even know it was done.
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prowlersfish
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Re: Flybridge Core project

Post by prowlersfish » Mon Apr 22, 2019 6:40 am

Nice work . Not a fun project for sure
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WayWeGo
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Re: Flybridge Core project

Post by WayWeGo » Mon Apr 22, 2019 9:39 am

It looks like you were able to remove the top skin in one piece and reuse it. Did it come off easily or was it difficult? How did you support the bottom layer while working on it? Scaffolding in the salon?
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gitchisum
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Re: Flybridge Core project

Post by gitchisum » Mon Apr 22, 2019 10:51 pm

It was a fun learning process, but a bugger of a project. Resin was taking 2 and 3x as long to kick with the temps. Had to go a little heavy on the catalyst the first part of the week.

The cut lines were ground and a mat layer glasses in to avoid print through. Plan is to sand then fair that, followed by a coat of Interdeck (interlux) non skid. Already had a coat of that up there, so going with another.

WayweGo, I did cut it in one piece. I was not easy to get out, but better than several pieces to work with. Spend considerable time grinding it smooth before laying it back down.

This project scared me before I did it, looking back it was not as bad as I feared. Although I have about 60 hours into it, mostly because of weather.
88 321 Sedan 270 crusaders
2001 Seadoo Challenger 2000
97 Lowe Roughneck 17TC
1948 Alumacraft K14, Evinrude twin 6hp " Still kickin"

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Re: Flybridge Core project

Post by BeaconMarineBob » Sun May 05, 2019 10:17 pm

Excellent
Please post pictures of finished results.
Thank you for sharing, this well help a lot of people.
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WayWeGo
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Re: Flybridge Core project

Post by WayWeGo » Sun May 05, 2019 10:21 pm

I am curious about the decision to use balsa. I realize it is stronger than many alternatives, but it seems a bit out of favor these days.
1975 F-36 Convertible
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gitchisum
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Re: Flybridge Core project

Post by gitchisum » Mon May 06, 2019 8:43 pm

WayWeGo wrote:
Sun May 05, 2019 10:21 pm
I am curious about the decision to use balsa. I realize it is stronger than many alternatives, but it seems a bit out of favor these days.
I was sold on TriCel when I decided to take on this project. The fact that the weight of Tricel was less, chance of rot was less, high tech stuff! It was several conversations with Bob that brought me back to using Balsa. ( Always trust the Guru!!)

When I considered the steps I would need to do to use the Tricel and get a proper layup, and compared that against the steps doing the same job with Balsa, Balsa won! If I were to construct panels, I would use Tricel, but using a honeycomb material would not allow me to get the middle glass layer in place. I would have had to construct a mold, and then layup a glass panel that I would use to create a panel to epoxy down, then epoxy the top layer to the skin and glass that down. Was nice to build up from the bottom. It should be another 31 years before a problem occurs, if at all.

I have not included finish product as I sold the boat a couple of weeks ago. I will try to get a few shots from the new owner and post them. We are in the market for a 80's/early 90's 48 - 52 Viking or Hatteras if anyone has any leads. Need a 3 stateroom layout.
88 321 Sedan 270 crusaders
2001 Seadoo Challenger 2000
97 Lowe Roughneck 17TC
1948 Alumacraft K14, Evinrude twin 6hp " Still kickin"

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WayWeGo
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Re: Flybridge Core project

Post by WayWeGo » Tue May 07, 2019 11:33 am

Thanks for the explanation!
1975 F-36 Convertible
Twin Chrysler 440's

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