Adding Weight while rebuilding Stringers
Printed From: CorrectCraftFan.com
Category: General Correct Craft Discussion
Forum Name: General Discussion
Forum Discription: Anything Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=47718
Printed Date: March-06-2025 at 8:10pm
Topic: Adding Weight while rebuilding Stringers
Posted By: Brett
Subject: Adding Weight while rebuilding Stringers
Date Posted: July-09-2019 at 3:37pm
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Hello all, I know that older pro boats do not make good surfers. I tried with a 92 Malibu and a buddy tried fat-sacking an 88 Malibu out...Never really got where we needed it o be. I am currently in the early rebuild of a 78 SW18. It needs a new floor. My questions: does anyone know of a boat were weight or weighting compartments were built in with the stringers? Could I add some sort of a fat sack or just weight-economically without going crazy? How would the deep V hull do with the added weight- would it be a plus or a negative? And then ultimately if I did all of this do you think I could get the weight needed? I would think not but I am thinking about it... Anyone tried?? Gives me something to think about but in the end she will probably never become a surfer... Brett |
Replies:
Posted By: Brett
Date Posted: July-09-2019 at 3:41pm
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let me clarify- I would like to try to add this weight sub Deck. If I could figure out some way to auto fill and drain a water source... Dont want a boat full of fat sacs and no room... |
Posted By: TRBenj
Date Posted: July-09-2019 at 3:57pm
| Vee hulls make lowsy surf boats in my experience. |
Posted By: phatsat67
Date Posted: July-09-2019 at 4:23pm
| +1 ^ |
Posted By: Brett
Date Posted: July-09-2019 at 4:58pm
| ?? |
Posted By: 8122pbrainard
Date Posted: July-09-2019 at 5:35pm
Zach is agreeing with Tim ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
TRBenj wrote:Posted By: gun-driver
Date Posted: July-10-2019 at 10:57am
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I guessing Tim is saying it’s lousy for surfing due to the table type wake the deep V puts out. I don’t think you would be able to get more than 200-300 pounds under the floor, would be better to get creative above floor with sac storage/seating/sun deck type storage. |
Posted By: Brett
Date Posted: July-10-2019 at 11:24am
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copy- that what I was thinking as well. just checking to see if anyone had tinkered in this area. |
Posted By: KENO
Date Posted: July-10-2019 at 11:25am
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Color me a little confused here not being a surfer boy Somebody needs to tell them guys at Centurion Boats (one of those CC companies) that a deep v is no good for surfing  They make all their money on wakeboard and surf boats 20 degrees deadrise at the transom ain't exactly flat. Flat table at 10 or so miles an hour? I don't think so Surf around the Centurion link below https://centurionboats.com/why-centurion/#opti-v-hull" rel="nofollow - link |
Posted By: JoeinNY
Date Posted: July-10-2019 at 12:00pm
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To answer the question, yes it is possible, has been discussed and shown on this site - a pretty high level example in the thread below. http://www.correctcraftfan.com/forum/forum_posts.asp?TID=13673&title=uks-78-sn" rel="nofollow - Underfloor ballast thread Not all v hulls are the same of course, but a sw 18 is basically the BFN hull and the bfn hull doesnt surf very well with just ballast, it was a washy mess in my experience. It is quite possible a suck gate of some sort could help. The bottom angle at the chine would seem to be critical in my mind as to pulling a good clean pocket and it quite different on an old CC vhull than a "mod V" centurion. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1477 - 1983 Ski Nautique 2001 1967 Mustang 302 "Decoy" http://www.youtube.com/watch?v=cO5MkcBXBBs - Holeshot Video |
Posted By: TRBenj
Date Posted: July-10-2019 at 12:17pm
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I don’t think 20deg is considered a deep vee.:: cc’s are closer to 24. But I will clarify: the vintage deep vee direct drive correct crafts that we have attempted to surf- from the Bfn to the 23’ Fish- have resulted in a lackluster wake that is extremely washy and therefore neither long nor steep. We have had much better results with smaller flat bottoms like 2001’s. A large v-drive moderate vee Centuroon would be a different animal than the Martinique in question. All of our trials are 10 years ago or so and predated the aid of the tabs and wake shapers that have evolved since that time so maybe something can be done... but my expectations would be set pretty low on turning one of these boats into a viable- let alone good- surf boat. |
Posted By: uk1979
Date Posted: July-10-2019 at 12:31pm
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Sounds like you may have the wrong hull to start with I’m no expert, I have often wondered if your on a tight budget and time scale and you need to pull with weight all the time, if it would be easy to just remove old floor and stringers leave the foam in if it has it, then cut old foam down in height a few inches at the front and taper down to the hull at the back, then shutter up area’s that need to be accessible and some big plastic pipes to lay in for exhaust, then order ready mix concrete with fiberglass mix and shoot it in , vibro poker would be good if you can get one, and may need to have sprinkler on the outside to keep the hull cool as it dries through the heat phase. As it dries smooth for a polished floor, or tile after. Depending on the thickness could lay in some S/S rebar in the main stringers hung on wire held by temp wood bars laid across the boat. Should have plenty of weight then to start with and great fixing for engine mounts. Good luck with your build, thanks for posting something for my mine to play with as I work. ------------- Lets have a go 56 Starflite 77 SN 78 SN 80 BFN |
Posted By: Brett
Date Posted: July-10-2019 at 12:35pm
| I have to work but they cant stop me from thinking about my boat!!! |
Posted By: KENO
Date Posted: July-10-2019 at 5:54pm
I think if you look at the picture below, print it out and check with a protractor or angle finder you'll come up with 20 degrees plus or minus a teeny tiny bit. More on the minus side. Easy enough to draw a reference line between lifting strakes and measure the angle Or measure yours in real life. https://ibb.co/g7pfgL5" rel="nofollow">  I seem to remember 20 degrees from a long time ago The picture is tbeard's BFN  |
Posted By: TRBenj
Date Posted: July-10-2019 at 11:06pm
| I’ve measured mine before and 24 is what’s stuck in my head. Will report back if I recheck. |
Posted By: uk1979
Date Posted: July-11-2019 at 7:27am
My 1980 BFN angle at the back reading 15/16 degrees @centerpoint and 20 degrees @ edge of keel... may be of some help.  ------------- Lets have a go 56 Starflite 77 SN 78 SN 80 BFN |
Posted By: KENO
Date Posted: July-11-2019 at 8:59am
Whaddya mean if? It's in your mind now, 2 people saying 20 degrees, It'll be gnawing away at you and you won't be able to concentrate on much of anything till you check it again An angle finder or a couple of measurements plugged into this on line angle finder in the link below and you'll have an answer https://www.analyzemath.com/Geometry_calculators/right_triangle_calculator.html" rel="nofollow - link |