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Started By
Message
Pressure treated bunks corroding aluminum boat.
Posted on 8/26/18 at 11:51 pm
Posted on 8/26/18 at 11:51 pm
I have an xpress bass boat from the late 90’s that started taking on water lately. I crawled under the boat several times but could never find where the water was coming from. The bottom of the boat looked good and all the welds looked fine. Today I hooked up the tractor and lifted the boat off the trailer, and the hull is corroded to shite everywhere it contacts the trailer bunks. Apparently the previous owner used pressure treated lumber for bunks wrapped in carpet. Apparently the carpet holds moisture on the lumber, and it leeches copper that corrodes the aluminum. I found about 6 holes through the hull like the ones in the pictures. There’s also several areas that are pitted about 3/4 of the way through the hull. (I didn’t get any pics of the big pitted areas)
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I don’t think they can be welded up because it’s so corroded, and to patch over the spots with plates would probably take 10 patches about 6” wide by 6-10” long. I can’t imagine it will run very well with all the patches. So I guess my only options are to ‘skin’ the entire bottom of the boat, or sell it for scrap. What would the OB do? Anyone have this issue before. Otherwise the boat is in great shape. Here’s a pic of it for reference.
[/url][/img]
[/url][/img] [/url][/img] I don’t think they can be welded up because it’s so corroded, and to patch over the spots with plates would probably take 10 patches about 6” wide by 6-10” long. I can’t imagine it will run very well with all the patches. So I guess my only options are to ‘skin’ the entire bottom of the boat, or sell it for scrap. What would the OB do? Anyone have this issue before. Otherwise the boat is in great shape. Here’s a pic of it for reference.
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8
Posted on 8/27/18 at 6:25 am to djs017
I would get that welded and then put gluvit on the bottom to fill any pits.
I think that Home Depot treated lumber is rated for contact with aluminium. If it's treated with micronized copper azole then it can contact but it still isn't recommended for really wet applications.
edit: my brother has an older semi v that was corroded to shite. he had a few patches put on the bottom and it didn't mess up the speed that much. I'm cheap so i would fix it lol
I think that Home Depot treated lumber is rated for contact with aluminium. If it's treated with micronized copper azole then it can contact but it still isn't recommended for really wet applications.
edit: my brother has an older semi v that was corroded to shite. he had a few patches put on the bottom and it didn't mess up the speed that much. I'm cheap so i would fix it lol
This post was edited on 8/27/18 at 6:27 am
Posted on 8/27/18 at 8:04 am to djs017
Yep, the acid from the treated would ate it up, she gone. Seen this many times. Almost impossible to fix short of replacing large sections of the bottom or the entire bottom. I bet its super thin everywhere along those runs. Always put plastic or Teflon runners on top of treated wood where it comes in contact with hull. Carpet is the worst!! it lets it stay soaking wet and in constant contact with hull. Aluminum scrap is going for a good price right now.
Posted on 8/27/18 at 9:42 am to Boat Motor Bandit
I think I’ll pull my motor and electronics and get a new boat ordered. Probably have one custom built this time. But I don’t think I can make myself scrap this one just yet. So it’ll probably sit in the yard until I have time to make it a weekend project to wire wheel the bottom to remove all the corrosion, then ‘skin’ the entire bottom with new aluminum. Worst case scenario is I spend some time practicing my welding then scrap it anyway.
Posted on 8/27/18 at 10:27 am to djs017
If you really like the boat, take in of the trailer, support it on a couple of good strong saw horses, wire brush area where it sat on runners and 2" on either side. Get alum plate, your choice, and cut 2 pieces 1" narrower, and 1" longer than the area you wire brushed. That gives you 1/2" weld area all around damaged area. Weld her up, feather the leading edge, no drag, paint if you wish, "wallah", boat fixed.
Posted on 8/27/18 at 12:51 pm to djs017
Not saying this is what you should do but it's what I did years ago... scuff the area and fiberglass it!
My younger brother decided to take my boat across an oyster bar, pealed it like a torn can.
He was visiting from Vernon Parish and we were fishing every day.
We took the boat home Lowe tunnel not a roughneck, removed the motor and poling platform and flipped it over.
I grinded down the all the rough edges and put a hot mix of glass on it. We had it out the next morning.
The fix was supposed to be temporary just for his visit but the repair actually held for several years. I used the boat two to three times a week back then.
Providing you have the time and $$$ I would go with the feather weld previously mentioned it will make the boat all that more special after the love session;)
My younger brother decided to take my boat across an oyster bar, pealed it like a torn can.
He was visiting from Vernon Parish and we were fishing every day.
We took the boat home Lowe tunnel not a roughneck, removed the motor and poling platform and flipped it over.
I grinded down the all the rough edges and put a hot mix of glass on it. We had it out the next morning.
The fix was supposed to be temporary just for his visit but the repair actually held for several years. I used the boat two to three times a week back then.
Providing you have the time and $$$ I would go with the feather weld previously mentioned it will make the boat all that more special after the love session;)
Posted on 8/27/18 at 12:55 pm to djs017
Flex Seal
Posted on 8/27/18 at 1:23 pm to djs017
Scrap the boat, and donate the motor to your brother so he doesn't have to rebuild the 40 Yammy he bought for $300
Posted on 8/27/18 at 4:33 pm to bootlegger
Your boat days are over for a year.
Posted on 8/27/18 at 6:47 pm to djs017
I'm glad to hear this I just changed my bunks on my trailer Saturday. Unfortunately I thought I was doing a good job by using treated 2x4's. Looks like I'll be doing it again this Friday. Thanks for the information, I'm sorry for you're misfortune.
Posted on 8/27/18 at 9:31 pm to Jambalaya 1
JB weld!
But really though that shite will keep you on the water for a very long time until u get funds for ur new boat
But really though that shite will keep you on the water for a very long time until u get funds for ur new boat
Posted on 8/28/18 at 1:35 pm to Timmayy
quote:
JB weld! But really though that shite will keep you on the water for a very long time until u get funds for ur new boat
^^^ This
It's exactly what I did after the fiberglass began to lose it's grip.
Posted on 10/30/18 at 4:08 pm to wrongRob
I will share my experience.... Purchased a used X18 Hyperlift with corrosion under the bunks. Long story short I removed all of the platforms and the foam So it was easier to weld on. I'm welding new plate along the entire length of the boat where the bunks sat. It will effect my performance.. we will see how much.
Posted on 10/30/18 at 5:32 pm to wrongRob
Did this years ago on a small riveted aluminum bateau. Worked fine for years.
If the OP can fix it, I wouldn't worry too much about losing speed -- the long term issues with a thinned hull are bigger.
Maybe patch it, and sell it "as is where is" with disclosure to the buyer. There will be a limited market for a boat with no engine and no electronics.
If the OP can fix it, I wouldn't worry too much about losing speed -- the long term issues with a thinned hull are bigger.
Maybe patch it, and sell it "as is where is" with disclosure to the buyer. There will be a limited market for a boat with no engine and no electronics.
Posted on 10/30/18 at 5:33 pm to Boat Motor Bandit
*sigh*...got some work to do...
think I'll use fish's headbanger...
think I'll use fish's headbanger...
Posted on 10/30/18 at 7:19 pm to farad
buddy of mines Hankos did this a couple of years back. they got it fixed that all I can tell you. don't know how. I'm no help. I will ask him tomorrow
Posted on 10/30/18 at 10:30 pm to djs017
If you can get your hands on some belzona epoxy it will hold. The machinist at work rebuild pump cases with it. I used it on a flatbottom that came off the trailer at 60 mph. It had several holes and dents I filled. My buddy still has the boat and it was 10 years ago.
Posted on 10/30/18 at 11:09 pm to BSellers22
quote:
BSellers22
I’m doing exactly what you did. I don’t think performance losses will be a big deal. I plan to run the patches about 3/4 of the way up the boat from the transom so the leading edges won’t create drag while on plane. I think with decent welds that are smoothed out with a buffing pad, the extra drag won’t really be noticeable. Keep us posted how it works out, and I’ll do the same whenever I get around to finishing mine.
Posted on 11/3/18 at 5:16 pm to Boat Motor Bandit
quote:just replace the treated wood on my bunks (which I just put on 6 weeks ago) with un-treated wood...
Yep, the acid from the treated would ate it up, she gone. Seen this many times.
thanks guys...
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