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Mar 25th, 2012
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Jon Boat Cracked Ribs #6947273
11/05/17 10:19 PM
11/05/17 10:19 PM
Joined: Oct 2013
Posts: 234
Texas, TX
Z
ZachW Offline OP
Woodsman
ZachW  Offline OP
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Z

Joined: Oct 2013
Posts: 234
Texas, TX
Since I duck hunt in this boat, I'm posting in this forum.

I have a riveted boat with a slightly rounded hull where these ribs are attached. The ribs have cracked in a few places and need replacing. I could weld this up, but the metal is super thin and and I don't see that being a strong solution.

Possible to remove, replace with some wide (4"?) 1/8" flat bar and bolt it up with some 5200? Any reason why I should have new ribs fabricated vs just bend some bar? Because of the rounded hull I think having custom ribs fabricated will be more trouble than it's worth, and I'd like to get another season or two out of it.



These cracks are in the middle, but the ribs are similarly cracked on the ends:

Re: Jon Boat Cracked Ribs [Re: ZachW] #6947374
11/05/17 11:52 PM
11/05/17 11:52 PM
Joined: Nov 2016
Posts: 574
N
nate33 Offline
Tracker
nate33  Offline
Tracker
N

Joined: Nov 2016
Posts: 574
I"d wear a life jacket and tie a rope to my gun ------- when it falls apart it will be an adventure you can talk about for years to come.

Re: Jon Boat Cracked Ribs [Re: ZachW] #6947399
11/06/17 12:11 AM
11/06/17 12:11 AM
Joined: Jan 2014
Posts: 420
N Texas
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Esh and Hattie Offline
Bird Dog
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N Texas
The bottom of our jon boat at home had been held together with kitchen screen and JB Weld for the last 15 years. 1 strip up a seam, and 1 hole about 4" round from a shotgun falling over and discharging in the boat.
(That guys hasn't been invited back)

Re: Jon Boat Cracked Ribs [Re: ZachW] #6947421
11/06/17 12:28 AM
11/06/17 12:28 AM
Joined: Sep 2010
Posts: 282
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jnd59 Offline
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I bet you can form an aluminum flat bar over it and braze it on. A mig welder will handle that thin stuff as well. Just do spot welds until it is filled in. I would drill out the rivets and add another layer after it is mig welded.

Re: Jon Boat Cracked Ribs [Re: ZachW] #6947468
11/06/17 12:54 AM
11/06/17 12:54 AM
Joined: Sep 2010
Posts: 6,062
DFW
S
SR025 Offline
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DFW

Re: Jon Boat Cracked Ribs [Re: jnd59] #6947607
11/06/17 02:35 AM
11/06/17 02:35 AM
Joined: Oct 2013
Posts: 234
Texas, TX
Z
ZachW Offline OP
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ZachW  Offline OP
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Texas, TX
Originally Posted By: SR025


Why even use all that aluminum? I could be using flex tape for this whole thing.


Originally Posted By: jnd59
I bet you can form an aluminum flat bar over it and braze it on. A mig welder will handle that thin stuff as well. Just do spot welds until it is filled in. I would drill out the rivets and add another layer after it is mig welded.


That would be easy enough. I can weld it up and see if it doesn't break again. I'm really wondering if the formed ribs hole any advantage over thick flat bar.

Re: Jon Boat Cracked Ribs [Re: ZachW] #6947893
11/06/17 01:26 PM
11/06/17 01:26 PM
Joined: Sep 2010
Posts: 282
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jnd59 Offline
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I expect the do since the formed ribs resist stress from many angles. I'm wondering how hard it would be to form another thin sheet of aluminum over the existing one and rivet it down.

Re: Jon Boat Cracked Ribs [Re: jnd59] #6948757
11/06/17 09:55 PM
11/06/17 09:55 PM
Joined: Oct 2013
Posts: 234
Texas, TX
Z
ZachW Offline OP
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ZachW  Offline OP
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Joined: Oct 2013
Posts: 234
Texas, TX
Originally Posted By: jnd59
I expect the do since the formed ribs resist stress from many angles. I'm wondering how hard it would be to form another thin sheet of aluminum over the existing one and rivet it down.


You're right. I'll do just this, or maybe just some angle on the flat parts of the rib. Should hold well enough and I don't need to worry about heat tempering the metal (and more cracks) down the line.

Re: Jon Boat Cracked Ribs [Re: ZachW] #6949429
11/07/17 08:11 AM
11/07/17 08:11 AM
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P
pervis Offline
Tracker
pervis  Offline
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That flex seal stuff actually works really good. I'd fix it and coat it in that and call it a day. Without any worries

Re: Jon Boat Cracked Ribs [Re: ZachW] #6949570
11/07/17 01:25 PM
11/07/17 01:25 PM
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Posts: 11,339
Texas
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wal1809 Offline
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Texas
I wouldn't waste my time welding it. Aluminum is really porous so far as a metals are concerned. It would be really hard to get it clean enough to weld and when you do, you're dealing with a really thin piece of aluminum anyway. Find a way to bolt something on, use some kind of whatever "gorilla snot" sealant and roll with it until the wheels come off. The cheapest fix will be a ten dollar gallon of roof tar cement. I use it to fix decoys after I go hunting with Dave Speer and GR Elliot.


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Re: Jon Boat Cracked Ribs [Re: ZachW] #6950151
11/07/17 06:51 PM
11/07/17 06:51 PM
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Posts: 33
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Lalo Offline
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Re: Jon Boat Cracked Ribs [Re: ZachW] #6950197
11/07/17 07:29 PM
11/07/17 07:29 PM
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ducknbass Offline
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I would take it to the scrap yard and know that 6 months down the road it would be a natty light can.

Re: Jon Boat Cracked Ribs [Re: ZachW] #6959836
11/14/17 04:28 PM
11/14/17 04:28 PM
Joined: Sep 2007
Posts: 379
DFW
J
Jeremy_Arnett Offline
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DFW
My old Tracker Grizzly did that. 2-3 breaks on each rib. McGill Propeller welded it up and I never had another issue.

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