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Plywood Bottom
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Plywood Bottom
I'am refinishing a 1950 Chris Craft 17' Special Runabout. I will be apply 5 layers, 1/8 inch plywood. Any suggestions on type of plywood and where to order? Thanks Richard
Re: Plywood Bottom
Why would you do that?
http://www.boatartgallery.com
1956 CC Connie 47'
1959 Caulkins bartender
1965 Cheoy Lee Frisco Flyer
1953 Chris Craft Holiday
1941 Chris Craft Deluxe
Plus 8-12 customer boats at any time
God don't count the days spent messing around in wood boats.
1956 CC Connie 47'
1959 Caulkins bartender
1965 Cheoy Lee Frisco Flyer
1953 Chris Craft Holiday
1941 Chris Craft Deluxe
Plus 8-12 customer boats at any time
God don't count the days spent messing around in wood boats.
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Re: Plywood Bottom
X2?boat_art wrote:Why would you do that?
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Re: Plywood Bottom
x3
john in va
john in va
1980 Fairchild Scout 30
19?? custom Argentine Runabout 16'
1954 Whirlwind deluxe dual ckpt 16'
1921 Old Town Charles River 17' (founding Captain, James River Batteau Festival)
19?? custom Argentine Runabout 16'
1954 Whirlwind deluxe dual ckpt 16'
1921 Old Town Charles River 17' (founding Captain, James River Batteau Festival)
Re: Plywood Bottom
ditto
Re: Plywood Bottom
X4!
Troy in ANE - Former President CCABC
1957 CC 21' Continental "Yorktown" (Mom's boat)
https://www.chris-craft.org/boats/22625/
1985 Formula 242LS "Gottago"
1991 Formula 36PC "Band Aids"
Life Is Too Short To Own An Ugly Boat
1957 CC 21' Continental "Yorktown" (Mom's boat)
https://www.chris-craft.org/boats/22625/
1985 Formula 242LS "Gottago"
1991 Formula 36PC "Band Aids"
Life Is Too Short To Own An Ugly Boat
Re: Plywood Bottom
richardculver wrote:I'am refinishing a 1950 Chris Craft 17' Special Runabout. I will be apply 5 layers, 1/8 inch plywood. Any suggestions on type of plywood and where to order? Thanks Richard
Richard, I see you are new to the forum and perhaps we are not greeting you in an informative manner.
We are all wondering why you would need 5 layers of ply, was that the bottom that was there?
I would recommend you search "Boat Buzz" for better info on bottom replacement,
...meanwhile, Welcome Aboard
Doug
Re: Plywood Bottom
I agree with Doug. I might also suggest Dannenburg's book on restoration.
Tom
Tom
http://www.boatartgallery.com
1956 CC Connie 47'
1959 Caulkins bartender
1965 Cheoy Lee Frisco Flyer
1953 Chris Craft Holiday
1941 Chris Craft Deluxe
Plus 8-12 customer boats at any time
God don't count the days spent messing around in wood boats.
1956 CC Connie 47'
1959 Caulkins bartender
1965 Cheoy Lee Frisco Flyer
1953 Chris Craft Holiday
1941 Chris Craft Deluxe
Plus 8-12 customer boats at any time
God don't count the days spent messing around in wood boats.
Re: Plywood Bottom
Here's a link
http://www.barnesandnoble.com/w/complet ... 1616732158
http://www.barnesandnoble.com/w/complet ... 1616732158
http://www.boatartgallery.com
1956 CC Connie 47'
1959 Caulkins bartender
1965 Cheoy Lee Frisco Flyer
1953 Chris Craft Holiday
1941 Chris Craft Deluxe
Plus 8-12 customer boats at any time
God don't count the days spent messing around in wood boats.
1956 CC Connie 47'
1959 Caulkins bartender
1965 Cheoy Lee Frisco Flyer
1953 Chris Craft Holiday
1941 Chris Craft Deluxe
Plus 8-12 customer boats at any time
God don't count the days spent messing around in wood boats.
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- Posts: 2092
- Joined: Thu Dec 29, 2005 10:41 pm
- Location: Powhatan Courthouse Virginia
- Contact:
Re: Plywood Bottom
never heard back anything...wondering if this post was genuine??
John in Va.
John in Va.
1980 Fairchild Scout 30
19?? custom Argentine Runabout 16'
1954 Whirlwind deluxe dual ckpt 16'
1921 Old Town Charles River 17' (founding Captain, James River Batteau Festival)
19?? custom Argentine Runabout 16'
1954 Whirlwind deluxe dual ckpt 16'
1921 Old Town Charles River 17' (founding Captain, James River Batteau Festival)
Re: Plywood Bottom
Hopefully he is off researching his options. Plywood is a possibility for a bottom material just not the 5 layers of 1/8 he was proposing.
- bjornbakken
- Posts: 62
- Joined: Sat Nov 29, 2008 2:12 pm
- Location: Central Mass.
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Re: Plywood Bottom
Just playing devil's advocate here, as I would put a planked bottom on myself. Using 5 layers of proper 1/8" BS-1088 Marine plywood should not be any different than 3 layers of 1/4", for a 'West-System" (aka cold molded) bottom? Other than more work maybe? 1/8" would be much easier to shape to the correct curves, especially up front.
A well written article on "West System" bottom here:
http://www.acbs-bslol.com/gadgets/bottomreplacement.htm
Bjorn B.
A well written article on "West System" bottom here:
http://www.acbs-bslol.com/gadgets/bottomreplacement.htm
Bjorn B.
1940 17' Chris Craft Deluxe
1958 Riva Florida No. 319
1955 Riva Ariston
1958 Riva Florida No. 319
1955 Riva Ariston
- Brian Robinson
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Re: Plywood Bottom
If a true cold molded bottom is what they are after, three layers is more than sufficient. Most use 4mm BS1088 for that size boat, but I suppose 3mm would be fine.
-Brian
1923 Hackercraft 23' Dolphin #03
1938 Gar Wood 22' Streamliner #6256 Empress
1952 Chris~Craft 19' Racing Runabout #363 Thunderstruck
Robinson Restoration, LLC (760) 468-1009
1923 Hackercraft 23' Dolphin #03
1938 Gar Wood 22' Streamliner #6256 Empress
1952 Chris~Craft 19' Racing Runabout #363 Thunderstruck
Robinson Restoration, LLC (760) 468-1009
- bjornbakken
- Posts: 62
- Joined: Sat Nov 29, 2008 2:12 pm
- Location: Central Mass.
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Re: Plywood Bottom
Here is a little report on my first attempt on a cold molded bottom. Using 3 layers of 3 mm BS1088 plywood on a 18' Riva. This boat originally had a 8 mm single piece molded plywood bottom.
http://www.rivaflorida319.blogspot.com
Bjorn B.
http://www.rivaflorida319.blogspot.com
Bjorn B.
1940 17' Chris Craft Deluxe
1958 Riva Florida No. 319
1955 Riva Ariston
1958 Riva Florida No. 319
1955 Riva Ariston
Re: Plywood Bottom
3mm .....is that 3M with an echo?
- bjornbakken
- Posts: 62
- Joined: Sat Nov 29, 2008 2:12 pm
- Location: Central Mass.
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Re: Plywood Bottom
Doug P wrote:3mm .....is that 3M with an echo?
No, it's 3 more money
1940 17' Chris Craft Deluxe
1958 Riva Florida No. 319
1955 Riva Ariston
1958 Riva Florida No. 319
1955 Riva Ariston
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Re: Plywood Bottom
Thank you for your comments. I guess its obvious I'am not a purist. I'am a retired middle school principal looking for something to occupy some spare time. The idea of west/5200 bottom comes from Bottom Replacement by Dan Nelson. This winter I'am replacing the chines, frames and stem as Dan Nelson describes in his article. In his article he uses three layers of 6mm Okoume plywood. I was thinking that five layers, 1/8 inch would be as strong but much easier to bend. I have read most of Wooden Runabouts Restoration Guide by Don Danenberg and it has been very helpful. Thanks Again, Richard
Re: Plywood Bottom
Richard....your boat, do what you feel that you can accomplish.
Each layer will need to be screwed, with 5 layers you will run out screw-able areas, plus the price of fasteners will be darn expensive. Spend the $ on clamps and less layers.
(Finally....telling a principal what to do...#56 on my bucket list.)
Each layer will need to be screwed, with 5 layers you will run out screw-able areas, plus the price of fasteners will be darn expensive. Spend the $ on clamps and less layers.
(Finally....telling a principal what to do...#56 on my bucket list.)
- bjornbakken
- Posts: 62
- Joined: Sat Nov 29, 2008 2:12 pm
- Location: Central Mass.
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Re: Plywood Bottom
Richard, I personally think 5 layers is redundant and more work. Using 3 x 6 mm as described by Dan Nelson will be plenty strong, but I second Brian that 3 layers of 4 mm should be sufficient on a 17' boat.
If your not a purist, I think a properly done cold molded bottom is just as good as a planked bottom. I have done both an "enhanced" traditional 5200 planked bottom and a cold molded bottom, and as an amateur a cold molded bottom is probably a little easier and more forgiving.
No need to screw each layer. Staple down each layer with Monel rust proof staples, and remove screws (if used) between each layer, as described by Dan Nelson. I did use bronze screws into the frames, keel and chine after the final layer, Mr. Nelson recommend ring shank copper nails between the layers
Bjorn B.
If your not a purist, I think a properly done cold molded bottom is just as good as a planked bottom. I have done both an "enhanced" traditional 5200 planked bottom and a cold molded bottom, and as an amateur a cold molded bottom is probably a little easier and more forgiving.
No need to screw each layer. Staple down each layer with Monel rust proof staples, and remove screws (if used) between each layer, as described by Dan Nelson. I did use bronze screws into the frames, keel and chine after the final layer, Mr. Nelson recommend ring shank copper nails between the layers
Bjorn B.
1940 17' Chris Craft Deluxe
1958 Riva Florida No. 319
1955 Riva Ariston
1958 Riva Florida No. 319
1955 Riva Ariston
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