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C Hawk 23 Rebuild...

Old 11-26-2018, 10:20 AM
  #81  
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Originally Posted by carribbean soul View Post
If you really want to save some time try these stringers

I spent a bit of time studying these preformed stringers. I really love the idea and you are correct....this would defiantly speed the process up. However, I guess like a lot of people doing restorations, the cost factor is preventing me from going this route. If I were building a new boat with the funds to do as I wish, these would certainly be what I would use! I appreciate the idea!
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Old 11-26-2018, 01:48 PM
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Plus the tallest one us 6 inches. How are you supposed to bond the floor to that tiny stringer?
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Old 01-11-2019, 11:03 AM
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Howdy folks...I apologize for not keeping this thread updated. Life kinda gets in the way (single dad raising three children) and being a Lineman by trade takes most all my time. However, I have been plugging away on the boat every chance I can get. This hull has five stringers with the center stringer being the largest due to the deep V design. I am replacing one stringer at a time. I am just bedding the stringers and placing a fillet on the sides as I go. I will go back and add my 1708 with epoxy after the stringers are done (I was told this was the best method in case I had to plane the tops of the stringers before fiberglassing them). At the moment, I am in the process of replacing the center stringer now. I am almost finished cutting it out and will clean them up and grind before I bed the stringer in. My question for the pro’s here...the center stringer was bedded in the very center of the hull. When I cut it out, there is a deep recession left where the plywood was bedded flush with the hull. What do you guys recommend I do with this when I go to reinstall the new stringer? As the stringer makes its way to the bow, the recess is nearly 3” deep. What should I do with this? Refill with putty...or should I let the marine ply set down in the recess with a mixture of epoxy and cabosil? I really do appreciate any advice and I am very grateful for this site!
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Old 01-11-2019, 11:13 AM
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I forgot to include this question in my last post...what are your thoughts on just purchasing epoxy glue (such as g flex) to do the stringer with or just make it with epoxy and cabosil? Just curious as this is a slow process and I was just thinking out loud...thanks again!!!!
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Old 01-11-2019, 11:16 AM
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I like using the cabosil and resin for PB so far. I can adjust the consistency to exactly how I want it. I would route the corners of the top of your strings so the glass bends around a radius not a 90.
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Old 01-11-2019, 11:46 AM
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Originally Posted by Captadam View Post
I like using the cabosil and resin for PB so far. I can adjust the consistency to exactly how I want it. I would route the corners of the top of your strings so the glass bends around a radius not a 90.
X2....G-flex would be very expensive to use as a putty for something that size. But I would sand the center groove to clean glass...you can suspend or support the beam off the keel with some spacers to fill in with bonding putty, then fillet the sides with the excess squeeze out. Router the tops after you get to your finished height, then do your glass work.
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Old 01-11-2019, 12:01 PM
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I had a similar groove in the keel of my Mako but maybe not as deep due to the deadrise. I ground the lip out flat enough to allow the grinder to reach the bottom of the groove and expose clean glass there. Then, backfilled the groove with thickened epoxy resin with a TON of chopped strand in it until the notch had a shallow enough angle to accept a fresh layer of fiberglass. Most of the keel has around 1/2" of thickened resin in it but the front got a little deeper due to the sharper angle of the prow. Then I put down one layer of 18 oz roving woven across the entire hull bottom between the stringers and then bedded my keel core on top of that.

I used thickened epoxy resin with chopped strand, milled glass and cabosil for my stringer core bonding putty.
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Old 01-11-2019, 02:04 PM
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Gentleman, I really appreciate the responses. Some great info (as always!)! I always know if I run into a snag...I can definitely depend on you guys to get me through it. Thanks so much!
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Old 01-22-2019, 01:18 PM
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I have now completed the front half of the center stringer. I have it glued in and I am now beginning the remaining part of the center stringer. The fuel tank set on a piece of ply that was glassed down on top of a small center stringer that measured 3" high. This was actually a 2 x 4 board that was glassed in between two bulkheads. My fuel tank had several holes in it so I threw it away and will be replacing with new. I am curious as to what method you guys use to set a fuel tank onto. I will be installing a belly tank rather than a rectangle one like the old one was. I have searched online and on the forum however, information that I need is hard to find. I am at the point that I need to start cutting my marine ply for the rest of the center stringer but I want to do it correct... Any information would be greatly appreciated!
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Old 01-22-2019, 01:35 PM
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I use a combination of hangers on top of the stringers and Divinycell foam blocks glued down with 5200 to the bottom spaced out where the internal tank baffles are located. Also with 1/4" nitrile rubber strips under both hangers and keel blocks. The first pics are of the 25 C-Hawk which got a flat bottomed tank, the last are the stretch Sea Craft with a vee bottom tank.






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Old 01-22-2019, 01:36 PM
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I figured I would upload a picture to show the stringer I am talking about. This was taken a while ago by the way.
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Old 01-22-2019, 01:44 PM
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Originally Posted by bills106 View Post
I use a combination of hangers on top of the stringers and Divinycell foam blocks glued down with 5200 to the bottom spaced out where the internal tank baffles are located. Also with 1/4" nitrile rubber strips under both hangers and keel blocks. The first pics are of the 25 C-Hawk which got a flat bottomed tank, the last are the stretch Sea Craft with a vee bottom tank.





I was hoping you would chime in! That is exactly the info I am looking for. Thank you once again Sir!
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Old 04-11-2019, 05:32 AM
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How's it going Buzzman. Any progress?
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Old 05-12-2019, 11:00 PM
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Subd
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Old 05-13-2019, 06:31 AM
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Me too
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