1981 Bayliner Victoria 2750 - Restore or Bust

[GWPSR]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

The other place I'm going to sneak flotation foam in was any partition walls. Instead of the original 3/4" ply, they'll be minimum 1/2 foam board sandwiched between luan or melamine board (depending on where they are). Ought to be about half the weight of the originals, and add a bit of buoyancy. (And be easier to carve wire chases through) All together it'll only add 5-6 cu ft of floatation, but that's 20 cu ft down, 71 more to find ...

 

[GT1000000]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

The other place I'm going to sneak flotation foam in was any partition walls. Instead of the original 3/4" ply, they'll be minimum 1/2 foam board sandwiched between luan or melamine board (depending on where they are). Ought to be about half the weight of the originals, and add a bit of buoyancy. (And be easier to carve wire chases through) All together it'll only add 5-6 cu ft of floatation, but that's 20 cu ft down, 71 more to find ...

I am actually planning on building my deck partitions in a similar fashion...
Great minds!

 

[biasbilt]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

The two long stringer cavities along either side of the fuel tank equal 14 cu ft. of volume. 2 lb foam in that space equals only 850 lbs of buoyancy. Hmmm ... maybe this is a failed proposition after all ...

The boat's weight as manufactured was 5,440 lbs. I would need 91 cu ft of floatation (@ 60 lbs/cu ft) to to be neutral. If I go for 6,000 pounds of buoyancy, I'll need about three 80 lb kits. $792 worth of foam kits (+$200 shipping). I was originally looking at 3 lb foam, which would be $1,056 (+256 shipping)

So ... I'm considering alternatives. I absolutely want this boat to stay visible just on the surface minimally if I'm out in the middle of the big lake. I've heard the song about the Edmond Fitzgerald. I don't want my boat on the bottom, especially with me in it.

You don't need 6000 lbs of flotation, you need the amount of flotation to support the negative bouyancy of the boat if it is partially submerged. For example, if you had a 12lb stone and a 12lb piece of wood, they both weigh the same, but the stone would need far more bouyancy to keep it afloat than the wood (but still not 12 lb). You need to look at the density of all the objects that make up the total weight of the boat and make a comparison between that and the density of the water you boat in. Obviously the engine would have a greater effect than the fibreglass hull for a given weight. This will be difficult and take a fair bit of guesstimation, but you should be able to come with a total figure for negative bouyancy and then work out if it is acheivable within your pace constraints.

Cheers, Toby

 

[GWPSR]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

You don't need 6000 lbs of flotation, you need the amount of flotation to support the negative bouyancy of the boat if it is partially submerged. For example, if you had a 12lb stone and a 12lb piece of wood, they both weigh the same, but the stone would need far more bouyancy to keep it afloat than the wood (but still not 12 lb). You need to look at the density of all the objects that make up the total weight of the boat and make a comparison between that and the density of the water you boat in. Obviously the engine would have a greater effect than the fibreglass hull for a given weight. This will be difficult and take a fair bit of guesstimation, but you should be able to come with a total figure for negative bouyancy and then work out if it is acheivable within your pace constraints.

Cheers, Toby

Thanks Toby. Yeah, the whole thing will involve guesstimation, adjusting, fudging and wet-finger-in-the-breeze I'm afraid. I'm reducing the overall weight of some components significantly, while increasing the dimensions and weight on others, like the full-width doubled transom. So the overall vessel weight may well end up slightly less than the original spec, but whether it will be mostly materials with relatively high neutrality (wood and composites) or low (metal), is not something I possess the formula for.

I think the plan is to pack rigid foam into areas that can easily accommodate it, utilize it where possible (ie: laminated to the back of the firewall) and perhaps use pour-in/sprayed in some of the more obscure shapes around the bow.

Since I can source foil-faced 4" thick 4x8 panels reasonably, I may even contemplate adding it to the hull sides in the engine bay. That'd be an additional 8 cu ft alone right there. And, ought to absorb a lot of engine sound. I could add another 2 cu ft to the back of the hatch easily enough.

 

[jbcurt00]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

Since I can source foil-faced 4" thick 4x8 panels reasonably, I may even contemplate adding it to the hull sides in the engine bay. That'd be an additional 8 cu ft alone right there. And, ought to absorb a lot of engine sound. I could add another 2 cu ft to the back of the hatch easily enough.

CC254 did something similar, and although not a frequent poster, PM him if you have questions:
1990 254 Sea Hawk

Starts @here:

Glassed in all the supports for the engine cover and grinded the cover down semi smooth. Have a few air pockets to square away and a little more glassing/resin to do. But it is coming along nicely. The cover is so fricken strong now. No flex at all.

I have some rubber membrane roofing material that I am contemplating using as a sound barrier. It seems to be very similar to some of the sound barrier materials I am finding online. may give it a shot and see how it performs. After all its free, its left over material of some flat roof installs I have done.

Ends w/:

Might use 2X 2" rigid foam & try some of the QuickRoof. Seems priced right :watermelon:

Does add weight though. An overlap at the seams may be sufficient, rather then 2 layers...

 

[GWPSR]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

Since I can source foil-faced 4" thick 4x8 panels reasonably, I may even contemplate adding it to the hull sides in the engine bay. That'd be an additional 8 cu ft alone right there. And, ought to absorb a lot of engine sound. I could add another 2 cu ft to the back of the hatch easily enough.

Self-vetoed. Read a report on the flammability of isocyanurate foam. I guess usage in the engine bay is right out.

 

[Celtichawk]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

And another of our return to port, including the last 3 seconds showing an identical StarCraft to gwpjr's passing us to starboard.

Where you located up in NY? I grew up in Albion, NY so I know the Lake Ontario very well!!! Small world but now I'm playing in the waters of the Pacific

Might have asked you that before but I forgot. Nice to see a area close to home.

 

[GWPSR]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

Where you located up in NY? I grew up in Albion, NY so I know the Lake Ontario very well!!! Small world but now I'm playing in the waters of the Pacific

Might have asked you that before but I forgot. Nice to see a area close to home.

Rochester metro area. We launch in the canal in Brockport or Pittsford, and in the river at The Port of Rochester or in Irondequoit Bay. Haven't tried Albion yet, but I can see that being a day trip destination for my boat when done.

Not a thing wrong with the Pacific either though My vacation stomping grounds are the Outer Banks of North Carolina. I love the ocean.

 

[jbcurt00]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

My vacation stomping grounds are the Outer Banks of North Carolina. I love the ocean.

I highly recommend a tad further south

Ocean Isle Beach: laid back, little tourist carp, fantastic in late Sept. Been the last 2yrs. Really going to miss it in about 3-4wks :cold:

 

[GWPSR]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

I highly recommend a tad further south

Ocean Isle Beach: laid back, little tourist carp, fantastic in late Sept. Been the last 2yrs. Really going to miss it in about 3-4wks :cold:

I love the Hatteras seashore area. I've been going there ever since I was in diapers. We've stayed everywhere from Kitty Hawk to Hatteras over the years, from tent camping to rented houses. I have kinfolk about an hour inland from Kitty Hawk.

I've fished at Atlantic Beach on the mainland, but still prefer the barrier islands because of the ability to fish in both ocean and sound. We caught a boatload of fish on the last charter we took out of Oregon Inlet.

I think I've got NC saltwater in my blood

 

[jbcurt00]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

Been going to the NC & northern SC shore off & on for over 40yrs too. Myrtle Beach to Nag's Head. Before fall 2 yrs ago, it had probably been 12-15yrs at least since I'd been.

After going this summer, I do prefer the fall. My new part-time teaching gig will prevent our trip this year, hence the June trip.

 

[Celtichawk]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

Rochester metro area. We launch in the canal in Brockport or Pittsford, and in the river at The Port of Rochester or in Irondequoit Bay. Haven't tried Albion yet, but I can see that being a day trip destination for my boat when done.

Not a thing wrong with the Pacific either though My vacation stomping grounds are the Outer Banks of North Carolina. I love the ocean.

Not sure I would recommend stopping in Albion, NY, times have changed. Some history there with the Cobblestones, and a few good eateries but overall small town. Brockport better choice though and bars located right near the Canal.

Awesome on Outer Banks. My wife's and I honeymoon was there and we took frequent vacation trips in that area with entire family into those vacation homes on stilts!

 

[GWPSR]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

Today's drill-while-you-grill session was brief but necessary. I started to bevel the area surrounding the hole left after removing the below waterline thru-hull the PO put in so he could pump out the porta-potty into the lake (jerk).

Only ground on the outside so far. Took it from the original 3/8 or 7/16 down to about 1/8 or 3/16 thick. Will bevel it similarly on the inside as well.

Focus up that close is not good.

I'll lay a layer or two of 17 oz biax on each side followed by several layers of 4 oz cloth, each layer being a slightly larger circle than the previous. The last will be slightly smaller than the ground area, so I can fair over the top when done. Inside, there will be a larger layer or two of 17 oz over the final round patch, to additionally bond it to the hull inside.

 

[GWPSR]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

Grillin' and grindin' tonight. Ground the inside til the area around the hole was paper thin:

Then I cut 5 circles of 17 oz biax, the smallest being about 2" in diameter, and the largest about 8". Wet them all out on a piece of 9 mil polyethylene sheet, then laminated them in one shot onto the inside. Prior to doing that, I used a duct tape "band-aid" with a small patch of thin polyethylene over the hole from the outside.

Laid two more layers of 17oz (rectangular) over the top of the buildup,for a total of 7 layers on the inside.

No pics as I didn't want to handle the camera with gloves on, and the light faded by the time I was all cleaned up.

I'll build up a few layers on the outside once the inside is cured.

 

[GWPSR]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

The outcome of yesterday's glass patch to the inside:

The buildup is flat across the inside.

Tonight I cut out circles of 10 oz fabric:

Wet them out on a piece of plastic:

And applied the stack to the outside:

It's still concave at this point. I'll sand it smooth after it cures and see if I need more layers before fairing. There are 6 layers of 10 oz on the outside, and 7 layers of 17 oz on the inside.

 

[GWPSR]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

Forgot a couple of before pics. The amount of taper on the outside:

And the outside before adding tonight's lams:

 

[ShowMeGuy]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

Looks like it ought to do the trick on that hole...

 

[Celtichawk]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

Looking great! Now I know where to reference if this happens to me. Keep them coming!!!!!!!

 

[Tboner7864]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

Hey GWPSR boy I'm glad I don't have to do a repair like that my Porta potty was self contained, great job GWPSR like celtichawk said keep the documentation coming we all really appreciate the expertize. I look forward to your thread gives me hope. I had to much house work to get in my boat, lately I miss the marine smell and mustiness.

 

[chconger]

Re: 1981 Bayliner Victoria 2750 - Restore or Bust

Well, now I know how to do that the correct way. Thanks! Great work on this thread.