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5200 Bottom. Space planks??

Framing, planking and fairing. Repair, or reconstruction. If it's hull related, you'll find it here.

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jfrprops
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Re: 5200 Bottom. Space planks??

Post by jfrprops » Mon Mar 05, 2018 5:02 pm

Excellent decision!

Carry on.

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)

JacobErdey
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Re: 5200 Bottom. Space planks??

Post by JacobErdey » Mon Mar 19, 2018 10:56 am

UPDATE: So, I've got about 70% of all the inner planking fit with 1/16 - 1/8" gap, then set with 5200 to all available surfaces (chines, keel, braces, spaces etc). Had a nasty rainy weekend with humidity over 90%. Went to check the boat this morning, all seems are swollen shut, and it looks like a roller coaster in some spots (for the record, I'm sure I am a bit to blame for some of this, because the back door of the shed was left open, allowing much more humid air to flow in around the boat, so I'll have to keep a closer eye on that). But, for anyone in similar climate to south Louisiana I would certainly recommend spacing them at least 1/8". Just wanted to update anyone that was contemplating the same options in a similar situation. Now I'll just keep my fingers crossed that they dry out and lay back down, and I'll have to rip some more spaces for them to breathe.
Current Project: 1950 Chris Craft Sportsman 18'

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maritimeclassics
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Re: 5200 Bottom. Space planks??

Post by maritimeclassics » Tue Mar 20, 2018 6:46 am

I think I am reading this right. You have spaces between you inner diagonal
IMG_20160308_114153222_HDR - Copy.jpg
planking? I would think you want your inner bottom tight and then the outer planking with a seam gap.
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Family member of Chris Craft founder
http://www.maritimeclassics.com
Ph# 231-486-6148

Restoration Projects:
1936 25' Gar Wood Custom
1947 Ventnor Hydroplane
1957 17' Sportsman
1948 25' Chris Craft Sportsman Twin
1930 28' Dodge Watercar
1959 19' Sliver Arrow Hull #75
1929 26' Chris Craft Custom Runabout
1947 30' Wilber Ketchum Launch
1940 18' 6 Century Triple

JacobErdey
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Re: 5200 Bottom. Space planks??

Post by JacobErdey » Tue Mar 20, 2018 10:48 am

Yes, I am spacing the inner angled planking as well. Started the first section with just small space, then noticed they were all swollen shut when I came back from the weekend. Then left about 1/16"-1/8" space the next section, and again came back from the weekend to find all gaps swollen shut and some pretty bad buckling in some spots. So, I don't love the plan, but I plan to now do the rest with roughly 3/16" spacing (better safe than sorry I'm thinking). then fill all seams with 5200 to prevent mountains of squeeze through when I bed the strakes. Luckily the weather is drying out this week and it appears my previously fitted planks are going to lay back down and I'll just rip some extra gaps in place to give them more room to breathe.
Current Project: 1950 Chris Craft Sportsman 18'

Denis D
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Re: 5200 Bottom. Space planks??

Post by Denis D » Tue Mar 20, 2018 1:12 pm

Did you CPES the inner planks before install?
Denis

1948 17' deluxe runabout

JacobErdey
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Re: 5200 Bottom. Space planks??

Post by JacobErdey » Tue Mar 20, 2018 1:39 pm

No I did not. My thought process was: Dry fit, then set with 5200, fill seams, fair all imperfections, then CPES. Didn't think I should've CPES'd before installing because they still all had to be faired so I figured I'd have to CPES again and didn't want to double-work. In hindsight, it appears that maybe I should've: dry fit, fair, remove and CPES inside and out, set in 5200, fill seams and scrape all 5200 flush. That order now seems like it would've been more appropriate. This is my first wood boat project and has proven to be a very good learning experience :lol: Should've known better than to tackle a grey boat
Current Project: 1950 Chris Craft Sportsman 18'

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maritimeclassics
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Re: 5200 Bottom. Space planks??

Post by maritimeclassics » Tue Mar 20, 2018 2:47 pm

I really think you should have the seams tight on the inner bottom. The outer bottom you could have 1/8 seam gaps but not the inner. I know you are following the Don Danenburg method and I am pretty sure his inner bottoms are tight. You shouldn't have to fair the inner bottom. Plane the inner planking to 3/16 and lay them in diagonally using 5200 and bronze boat nails. Unless you boat was built after 1956 then it would be a plywood inner bottom.
Family member of Chris Craft founder
http://www.maritimeclassics.com
Ph# 231-486-6148

Restoration Projects:
1936 25' Gar Wood Custom
1947 Ventnor Hydroplane
1957 17' Sportsman
1948 25' Chris Craft Sportsman Twin
1930 28' Dodge Watercar
1959 19' Sliver Arrow Hull #75
1929 26' Chris Craft Custom Runabout
1947 30' Wilber Ketchum Launch
1940 18' 6 Century Triple

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Don Danenberg
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Re: 5200 Bottom. Space planks??

Post by Don Danenberg » Tue Mar 20, 2018 9:00 pm

I do fit the inner bottom slats as tightly as I can but still bedded in rubber at the edges as well. I've learned a lot since I first wrote book one in 1995, these photos show how I do it now. I use temporary hex-washer head screws and remove them all after the rubber sets. The outer planks should have 1/8" gap. I'm about to retire from the labor part and write more books on updated procedures such as these. I hope these photos work?
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Don Danenberg
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Re: 5200 Bottom. Space planks??

Post by Don Danenberg » Tue Mar 20, 2018 9:02 pm

Well, except for the photos being in REVERSE ORDER, it seems to have worked well.

I think it sounds like your biggest problem is humidity control. My wood doesn't move around like that, but then, I'm plowing snow all winter!

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maritimeclassics
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Re: 5200 Bottom. Space planks??

Post by maritimeclassics » Wed Mar 21, 2018 7:01 am

Thanks Don, that's a good explanation and the way it should be done.
Family member of Chris Craft founder
http://www.maritimeclassics.com
Ph# 231-486-6148

Restoration Projects:
1936 25' Gar Wood Custom
1947 Ventnor Hydroplane
1957 17' Sportsman
1948 25' Chris Craft Sportsman Twin
1930 28' Dodge Watercar
1959 19' Sliver Arrow Hull #75
1929 26' Chris Craft Custom Runabout
1947 30' Wilber Ketchum Launch
1940 18' 6 Century Triple

JacobErdey
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Joined: Tue Oct 03, 2017 7:31 pm
Location: Hammond, LA
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Re: 5200 Bottom. Space planks??

Post by JacobErdey » Wed Mar 21, 2018 8:57 am

Thanks for the detailed visuals! It appears my first and most consequential mistake was failure to CPES planks before fitting. I left the wood too exposed to the elements and am paying for it now, but I think I can manage to iron out the kinks (literally :lol: ). I definitely know better for the next project. Thanks for all the good input guys
Current Project: 1950 Chris Craft Sportsman 18'

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mbigpops
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Re: 5200 Bottom. Space planks??

Post by mbigpops » Fri Mar 23, 2018 7:14 am

I'm about to retire from the labor part
Don,

What's up with this ? I don't see Staib retiring and leaving us hanging.

Who will answer all of our "read between the lines" questions ?

Mark
1953 CC Rocket Runabout "Rocket Man"

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Don Danenberg
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Re: 5200 Bottom. Space planks??

Post by Don Danenberg » Fri Mar 23, 2018 11:05 am

Yeah well,
I've been crawling in, under, and around wooden boats since 1971. I'm old and sore. In 1965 I learned not to wave at girls on a motorcycle, it took seven operations to re-attach my right leg. My knee did pretty well for 50-years but is now really complaining. Because I favored that knee, my hip is now worn out. On top of that, in 2016, I tore rotator cuffs in both shoulders, making it very difficult to hold up heavy power tools all day. I've been turning away new work for 3-years now and just completed the last two (both 19-barrelbacks). I'm just so sore at the end of the day that I just don't 'love' the work as I used to. As Connie Adamski (Century Boat) used to say; "These Golden Years...., They Suck!"

MBI still won't release the rights to my books so I'm planning to write more that include all the stuff that MBI edited out of the old ones. Problem is, after 16-years of my Website Forum entries, it might take 4-5 books to include everything? I'm also set up now to self-publish so I don't have to lose 92% off the top to a publisher.

Denis D
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Re: 5200 Bottom. Space planks??

Post by Denis D » Fri Mar 23, 2018 11:18 am

Hey Don,

Please tell us you will at least keep your forums going to keep us on the right path. Where else could we possibly find all that wisdom?
Denis

1948 17' deluxe runabout

jfrprops
Posts: 1988
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Re: 5200 Bottom. Space planks??

Post by jfrprops » Mon Mar 26, 2018 5:20 pm

Don, I know what of you speak my man! It gets very difficult to do the same stuff we once did. Glad you are putting more time into writing...a huge asset for us all. One thing is a quasi positive though....you and lots of us, very active during the golden age of working on classic boats. Sharing your expertise in print (or cyber) is the way to pass on the skills...but sadly there are not many young folks showing the required interest and devotion or even curiosity. That is the way of the world. I really enjoyed having Allen from Katz's Marina at lunch with us CC guys in Tavares...he is 28! well spoken and skilled. We need to encourage and mentor those guys.
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)

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