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by Don Danenberg
Sat Jun 02, 2018 11:04 am
Forum: Hull Construction
Topic: open seams in new 5200 Bottom
Replies: 5
Views: 538

Re: open seams in new 5200 Bottom

My guess is that change in your shop's humidity levels allowed the planks to shrink? CPES is a semi-permeable membrane, not a moisture barrier coat, it does slow, but not stop, moisture movement. It's main job is to penetrate and fill 'abnormal porosity' like open grain and rot spore tendrils. It's ...
by Don Danenberg
Mon May 28, 2018 11:32 am
Forum: Hull Construction
Topic: Constellation Bottom Repair - New Member In Need Of Reassembly Advice!!!
Replies: 9
Views: 635

Re: Constellation Bottom Repair - New Member In Need Of Reassembly Advice!!!

Since he is 'repairing small sections' at the stem and garboards, I recommended that he stay with the original boatyard bedding compound and canvas so that it moved like the other 90% of the bottom he is not re-planking. 5200 would also work but might make stiffer areas where used. Where the origina...
by Don Danenberg
Sun Apr 22, 2018 9:00 pm
Forum: Hull Construction
Topic: Exhaust holes in '59 Continental 18'6"
Replies: 2
Views: 325

Re: Exhaust holes in '59 Continental 18'6"

' Exact Former Locations' ?
The Factory understood where "plumbing-pipe" Linkages might throw-off design-lines?

The "Workers" were not imbued with design parameters?

They were NOT the perfection you seek?
by Don Danenberg
Mon Apr 16, 2018 9:29 am
Forum: Hull Construction
Topic: Original Stem/Gripe not seated in frame
Replies: 10
Views: 783

Re: Original Stem/Gripe not seated in frame

Well.., look closely at those hammer marks, there are no nails there. I think those hammer marks were the effect of one guy showing another guy that That frame-tie is NOT sound, certainly not solid. Note that bolt holes appear to be moved or just crushed under the head? The forward lift ring hardwar...
by Don Danenberg
Wed Apr 11, 2018 6:02 pm
Forum: Hull Construction
Topic: Installing new cap rails
Replies: 6
Views: 599

Re: Installing new cap rails

I just went back to my shop to retrieve the MM 'Essential Guide' and that photo of '43' Constellation: 1965', doesn't show if there is, or is not, a raised bulwark? It does, however, list 'Deck color' as "White Vinyl". If this vinyl needs replacement, you had best do this before rubbering anything t...
by Don Danenberg
Wed Apr 11, 2018 5:01 pm
Forum: Hull Construction
Topic: Installing new cap rails
Replies: 6
Views: 599

Re: Installing new cap rails

I'm a bit confused by your use of the term "Cap Rail"? A Cap Rail is generally a "CAP" to a raised bulwark, 2" or more above the deck. A "Toe-Rail" mounts directly to the deck. If you can post a photo of your original installations, perhaps I can help with the least messy way to go about the new ins...
by Don Danenberg
Tue Apr 10, 2018 8:14 pm
Forum: Hull Construction
Topic: Original Stem/Gripe not seated in frame
Replies: 10
Views: 783

Re: Original Stem/Gripe not seated in frame

Yup, its probably too big to attach, I resize mine to less than 1mb to post here. In my own forum they have to be less than 100kb, which makes them much harder to see. Right-click on the photo (before attempting to attach) and see if one of the listed options is "resize"? Maybe one of this Forum's m...
by Don Danenberg
Mon Apr 09, 2018 8:44 pm
Forum: Hull Construction
Topic: Original Stem/Gripe not seated in frame
Replies: 10
Views: 783

Re: Original Stem/Gripe not seated in frame

After you hit 'reply', and reply your message, you must hit "Attachments" and then hit the tiny, little, "Add files", and then follow the instructions to find and upload the file(s).
Its a Test.
We must learn to pass this Test (It does change often).
by Don Danenberg
Mon Apr 09, 2018 6:46 pm
Forum: Engines & Powertrain
Topic: Removal of a broken engine plate drive screw
Replies: 7
Views: 772

Re: Removal of a broken engine plate drive screw

Hey, If it's even possible to 'break' a 3/16" long rivet, what would be left is tiny. If you are going to try to 'drill' it out, you should use a "Reverse-cut" drill bit, so that it unscrews the super-tiny bit of the rivet left, by its own threaded rings. Be VERY careful to not drill into the cast i...
by Don Danenberg
Mon Apr 09, 2018 8:39 am
Forum: Hull Construction
Topic: Original Stem/Gripe not seated in frame
Replies: 10
Views: 783

Re: Original Stem/Gripe not seated in frame

Wow, an inch gap? I've seen as much as 1/2" gap here, and that was likely caused by caulking and spreading bottom planks. Photos would really be helpful here to see what may have caused this. At this point, the stem and gripe could be re-made deeper to fill the gap, or even shim the frames? Even if ...
by Don Danenberg
Fri Apr 06, 2018 7:30 pm
Forum: Odds & Ends
Topic: 5gallon pail of 5200
Replies: 6
Views: 786

Re: 5gallon pail of 5200

Mike's got it, exactly what I do. I place a dozen tubes in the furnace outflow, or in the past, put a dozen tubes in the shop sink full of HOT water for an hour or two. I use pneumatic guns and without a tip can empty a tube in 3-seconds. Warm and liquid, its also much easier to trowel and likely ge...
by Don Danenberg
Fri Apr 06, 2018 7:10 pm
Forum: Engines & Powertrain
Topic: Removal of a broken engine plate drive screw
Replies: 7
Views: 772

Re: Removal of a broken engine plate drive screw

Actually, I don't know these to be hard, but quite soft 'Rivets'. These are generally 1/4" to 3/16" long and hammered into place. It is quite easy to just pry this plate off of the manifold if you are careful not to bend the corners of the brass plate. They can't be re-used because the spiral ribs a...
by Don Danenberg
Fri Apr 06, 2018 6:48 pm
Forum: Hull Construction
Topic: Installing new cap rails
Replies: 6
Views: 599

Re: Installing new cap rails

3M-5200 and no problems. I would still use fasteners at ends and where stanchions might need support, also where a fastener is necessary to pull it down tight to spooge the rubber. What I would do is shape and fit them, placing whatever minimal screws are needed, then remove them and stain and varni...
by Don Danenberg
Fri Apr 06, 2018 3:42 pm
Forum: How to Use Boat Buzz
Topic: 1942 17' Special Runabout Battery Box, Tool Box
Replies: 3
Views: 494

Re: 1942 17' Special Runabout Battery Box, Tool Box

Oh Oh, the attachments didn't upload?
And now, they will upload backwards?
Read the photos from the bottom, up?
by Don Danenberg
Fri Apr 06, 2018 3:38 pm
Forum: How to Use Boat Buzz
Topic: 1942 17' Special Runabout Battery Box, Tool Box
Replies: 3
Views: 494

Re: 1942 17' Special Runabout Battery Box, Tool Box

These pages are scanned from an article I wrote in Classic Boating magazine in the Jan/Feb 2012 issue, #165.
The first tool box shown is for late 20's, early 30's.
The CAD drawings are for your '42, 17'.
by Don Danenberg
Fri Mar 30, 2018 10:54 am
Forum: Odds & Ends
Topic: 5gallon pail of 5200
Replies: 6
Views: 786

Re: 5gallon pail of 5200

Yes, I did try this ONCE! This was 1998(?) when tubes were $6.05 (20-cases) and the pails were $270? I had three bottoms ready to go before I opened anything. Framework all done and sealed, inner bottoms installed and sealed, planks steam bent and dry-fit with locator screws. I had a crew of 3. What...
by Don Danenberg
Wed Mar 28, 2018 8:40 am
Forum: Hull Construction
Topic: Fitting Bottom Planks
Replies: 2
Views: 448

Re: Fitting Bottom Planks

I always start by fitting the curves at the bow, along the keel, these might need trimming to get the shape right. Use your old planks to mark where each started along the gripe. I cut out new plank 'blanks' a bit longer than simply tracing to make up for any sliding forward due to trimming to fit t...
by Don Danenberg
Fri Mar 23, 2018 11:05 am
Forum: Hull Construction
Topic: 5200 Bottom. Space planks??
Replies: 44
Views: 3451

Re: 5200 Bottom. Space planks??

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, ...
by Don Danenberg
Tue Mar 20, 2018 9:02 pm
Forum: Hull Construction
Topic: 5200 Bottom. Space planks??
Replies: 44
Views: 3451

Re: 5200 Bottom. Space planks??

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!
by Don Danenberg
Tue Mar 20, 2018 9:00 pm
Forum: Hull Construction
Topic: 5200 Bottom. Space planks??
Replies: 44
Views: 3451

Re: 5200 Bottom. Space planks??

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 h...
by Don Danenberg
Fri Mar 16, 2018 9:41 am
Forum: Hull Construction
Topic: 5200 Bottom & CPES clarification
Replies: 9
Views: 726

Re: 5200 Bottom & CPES clarification

Yeah, you should scrape that excess off. Its meant to soak into the surface "abnormal porosity", not puddle on the surface. A thick surface layer could be a weak link in 5200 attachment. It does promote adhesion of paints and beddings but is not structurally sound as a puddle layer. It is not like a...
by Don Danenberg
Thu Mar 15, 2018 7:46 pm
Forum: Hull Construction
Topic: 5200 Bottom & CPES clarification
Replies: 9
Views: 726

Re: 5200 Bottom & CPES clarification

Wow! This is becoming beyond my ability to respond? JacobErdey; 1) Nope, just 1-coat of bilge paint, unless you expect your engines to leak a lot of oil (see third post, by Denis D). 2) "Bilge Primer?" See # 3, below. 3) You seem to get that CPES is 'applications, NOT Coats', IT Soaks IN to do its w...
by Don Danenberg
Sat Mar 03, 2018 6:44 pm
Forum: Hull Construction
Topic: 5200 Bottom. Space planks??
Replies: 44
Views: 3451

Re: 5200 Bottom. Space planks??

Do NOT put any kind of WAX in your plank seams....,
UNLESS you WANT to do it AGAIN?

It also Does weaken frames AND fasteners?
And NO 'real' product will ever 'stick' there, again?
by Don Danenberg
Fri Mar 02, 2018 9:39 am
Forum: Hull Construction
Topic: 5200 Bottom. Space planks??
Replies: 44
Views: 3451

Re: 5200 Bottom. Space planks??

Now that sounds like the very old Viking procedure for launching a lapstrake boat. Again, from the WoodenBoat magazine, in the letters to editor section. Apparently they shoved the boat off the beach and quickly shoveled ant's nests all along the waterline. The dirt fell to the bottom while the ants...
by Don Danenberg
Thu Mar 01, 2018 6:12 pm
Forum: Hull Construction
Topic: 5200 Bottom. Space planks??
Replies: 44
Views: 3451

Re: 5200 Bottom. Space planks??

To begin with, Mike is NOT wrong, Chris-Craft runabout-sized boats were built with the 1/2", carvel-planked bottoms TIGHT, with NO caulking. These runabouts (and utilities) came with 6-month warranties, and lift rings. You were told, in the owners' manual, to take the boat out of the water 'when not...
by Don Danenberg
Tue Feb 27, 2018 7:21 pm
Forum: Hull Construction
Topic: 5200 Bottom. Space planks??
Replies: 44
Views: 3451

Re: 5200 Bottom. Space planks??

When I first developed my CPES and 5200 procedures for runabout bottoms (1984), I had just come from a 3-year restoration of a 120 ft Schooner at the Norfolk School of Boatbuilding. I directed 23 students of the school but we were ALL under the direction of 7 Certified Shipwrights. The frames were d...
by Don Danenberg
Wed Feb 21, 2018 6:34 pm
Forum: Electrical Systems
Topic: Sea-Mite Siren
Replies: 6
Views: 663

Re: Sea-Mite Siren

Bill Randall Horn rebuilding
7129 Oriskany Rd.
Rome, NY 13440
315-336-8841

He can also re-wire to convert to 12V.
Great work.
by Don Danenberg
Fri Feb 16, 2018 11:00 am
Forum: Cockpit and Cabin Interiors
Topic: Adhesive for linoleum
Replies: 4
Views: 646

Re: Adhesive for linoleum

I would also recommend NOT gluing it down. In the early CC's with rubber mats, the factory used very few screws with upholstery washers, like 5 in the fwd cockpit and 0 or 2 in a flat section aft. The only original factory installation I've seen glued down was a 1946, 25-Sportsman, and only the face...
by Don Danenberg
Sat Feb 10, 2018 11:22 pm
Forum: Shows, Museums, & Event Locations
Topic: Re-invigorate Boat Buzz!
Replies: 0
Views: 1670

Re-invigorate Boat Buzz!

Michigan, 2018.
Algonac..,
Port Huron., International..,

You's guys missed it..., The Century show will be elsewhere?
by Don Danenberg
Thu Feb 08, 2018 6:58 pm
Forum: Cockpit and Cabin Interiors
Topic: 1954 17' Sportsman Flooring
Replies: 10
Views: 859

Re: 1954 17' Sportsman Flooring

Hey, You could be right there, on 3/8" sole for the 17-Sportsman! I had recently restored a 1956, 20-ft Sportsman, and the original, plywood, cockpit sole was 1/2". I hadn't worked on a 17-Sportsman in 25-years. I spoke to a friend, and fellow restorer, who owns a mid-fifties, 17-Sportsman, and he c...