1973 196 rebuild question

[Duffy1470]

RickK, is it pretty normal for there to be lots of resin? Looks like it was just poured in

[RickK]

Where are you referring to? If you are using epoxy, it doesn't harden very fast and can run down and puddle at the bottom of the transom. I hope you plan to install a pvc pipe at the aft and through the drain hole. You will be affecting the lowest point in the boat. Now is the time to do it.

Here is a link to where I explain the thought of the PVC pipe
http://classicaquasport.com/smf/index.php?topic=13148.msg133124#msg133124

Here is a link to where I show what is actual problem
http://classicaquasport.com/smf/index.php?topic=13148.msg133556#msg133556

Here is a link to Hawgleg's rebuild that shows the PVC pipe installation to keep a drain at the new low point of the boat
http://classicaquasport.com/smf/index.php?topic=13148.msg134262#msg134262

[Duffy1470]

Haven't processed all you wrote yet but will and will answer. In the mean time more pics to ponder. This boat has clearly been in a significant collision.  See pics of bow and stringer.  Everyone's thoughts would be appreciated.  Should I continue down the Coosa path or switch to plywood?

[Duffy1470]

[Duffy1470]

You can see where core was taken out and not replaced. What was factory?   By the way, cicadas are attracted to grinders.

[Duffy1470]

You can see extensive repair to starboard bow. There is also repair about halfway back on starboard. I assume same collision which caused starboard stringer blowout?  Why would core be removed  from next to keel?  Input please I am at a loss.

[Duffy1470]

Okay. Answer to Rick's questions. I have not used any resins or epoxies as of yet, still grinding.  The resin appears to be polyester  and was already in here.  You can see where the stringers delaminated from the hull.  Looks like whoever "repaired" them dumped the rest of the resin in the bo/om.  I will try to post a pic.

[RickK]

Can you show us the damage at the bow and the starboard side plz?

[RickK]

In the last pic you can see how the stringers were laid into the boat. The stringers were attached with a bonding putty, so maybe what you think is resin in the aft of the boat may be bonding putty. To repair the stringers I think dbiscayne has the right idea to rebuild them from the inside out. You can buy rolls of 4" or 6" 1708 that are used as tape, might want to consider that instead of cutting your own tape.

[Duffy1470]

Bow damage.  See the streaks? It appears to be polyester resin that was just dumped in.  That was done in the stern as well but I ground it out already.  The bonding putty is Grey so I don't think I would confuse it with poly resin.  Pretty sure someone has done a bunch of sub par work to this boat.  See the paint. It is representative of the rest of the work.

Again, why rebuild the stringers from the inside instead of the outside? I really do not relish the idea of grinding inside the stringers. Also, is it standard to have one layer of biax tabbing the stringers down because that is all that is there.  As shown in the Pic the bonding putty unbonded leaving the one layer of biax floating in the air, tabbed to nothing.

My goal with this boat is to make the guts last for another 50 years so my kids can finish it however they want when they want. I can change my goal if this boat isn't worth $300 plus a sheet Coosa. Thy plywood lasted a long time. Your opinions are appreciated.  Thanks

[Duffy1470]

I will get a pic of the starboard damage that is adjacent to the blown out stringer today. 

[RickK]

Ouch, can you see the damage from the outside? I think it's an easy repair but will require some grinding (ugh) The other option for the stringers is to rip them out and build new ones, then you know they'll last. I did that in my 170 rebuild. You only need fiberglass cloth, 1708, resin and a homemade mold.

Heres a few pics from my rebuild:
Stringers out, hull inside ground and new 1708 over entire hull


New stringers


Stringers scribed to hull and set in place




Held in place


27 gal fuel tank notched in with room for expansion


Tabbed in and later tacked in place


This is the tank I bought at Marine Surplus in Bradenton FL. They have a web page


This will get you in the middle of the stringer stuff
https://classicaquasport.com/smf/index.php?topic=10101.msg103523#msg103523

[Duffy1470]

Your build is awesome.  I'm toying with the new stringer idea.  Not sure my skill set, wallet or patience is.up to the task.  As far as rebuilding a wrecked boat goes, it's not any dumber than rebuilding a 51 year old boat, but a 51 year old wrecked boat.  Here is an example of the poly resin poured into the stern.

[RickK]

Yeah we've seen iron bars glassed in for ballast and to correct lean, in one boat, so nothing really surprises us.
If you can build the molds that you see in the pics I posted, you can make the stringers. I joined multiple sections of the stringers together to make the length I needed - that was challenging. If I did it again I would make a 16-17ft mold.

[Duffy1470]

Roger that on the 16-17 foot mold.  I think the answer must be really obvious and you are not wanting to insult my intelligence or lack thereof, but why rebuild stringers from the Inside. Are inside out rebuilds stronger or something. The answer could be my proposal, if executed, will look stupid which is legit.  Just curious. If I need to stop asking, I can do that too.  Thank you for all the info, truly a great resource.