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#41
posted to rec.boats
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Grady White falls off of boat lift - Pics
"Calif Bill" wrote in message m... "Richard Casady" wrote in message ... On Mon, 28 Jul 2008 17:40:29 -0700, "CalifBill" wrote: "Short Wave Sportfishing" wrote in message ... On Mon, 28 Jul 2008 20:14:30 GMT, "Chuck" wrote: I know... I only post when I have a problem. This happened two weeks ago. The bolt on the front outer piling holding the boat lift cradle pulley sheared right off and the boat went in the drink. Photos of the boat, the bolts, and some telltale corrosion streaks are stored at the links below. www.thespaceexplorers.com/corrodedbolts3.jpg (boat in water) www.thespaceexplorers.com/corrodedbolts1.jpg (3/4 galv. bolts corroded away to nothing) www.thespaceexplorers.com/corrodedbolts2.jpg (bolt rust stains on pulley housing) OK. So my question is.......... is there any way to diagnose a galvanized bolts integrity before it rusts through like this again? I can't seem to find my portable X-ray machine. I also can't quite figure out how to do a simple swapout on the other three. I don't know anybody who swaps their lift bolts out every few years! I'm probably wrong, but that looks like electrolysis. Which means that you have some kind of current leakage somewhere - maybe from a shore charger? Is your boat isolated from shore side current? How about adding some zincs? These are galvanized bolts. Adding zinc to zinc will accomplish little. Casady The zinc on those bolts was long gone. So.... the zinc is just a coating and not mixed into the steel bolts? |
#42
posted to rec.boats
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Grady White falls off of boat lift - Pics
On Jul 30, 6:47*pm, "Calif Bill" wrote:
"Richard Casady" wrote in message ... On Mon, 28 Jul 2008 17:40:29 -0700, "CalifBill" wrote: "Short Wave Sportfishing" wrote in message . .. On Mon, 28 Jul 2008 20:14:30 GMT, "Chuck" wrote: I know... I only post when I have a problem. *This happened two weeks ago. The bolt on the front outer piling holding the boat lift cradle pulley sheared right off and the boat went in the drink. *Photos of the boat, the bolts, and some telltale corrosion streaks are stored at the links below. http://www.thespaceexplorers.com/cor...lts3.jpg*(boat in water) http://www.thespaceexplorers.com/cor...olts1.jpg*(3/4 galv. bolts corroded away to nothing) http://www.thespaceexplorers.com/cor...olts2.jpg(bolt rust stains on pulley housing) OK. *So my question is.......... is there any way to diagnose a galvanized bolts integrity before it rusts through like this again? * I can't seem to find my portable X-ray machine. * I also can't quite figure out how to do a simple swapout on the other three. *I don't know anybody who swaps their lift bolts out every few years! I'm probably wrong, but that looks like electrolysis. *Which means that you have some kind of current leakage somewhere - maybe from a shore charger? Is your boat isolated from shore side current? How about adding some zincs? These are galvanized bolts. Adding zinc to zinc will accomplish little. Casady The zinc on those bolts was long gone.- Hide quoted text - - Show quoted text - Happy bday, a day late if that was you they noted... |
#43
posted to rec.boats
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Grady White falls off of boat lift - Pics
"Chuck" wrote in message news:ks8kk.222528$TT4.50185@attbi_s22... "Calif Bill" wrote in message m... "Richard Casady" wrote in message ... On Mon, 28 Jul 2008 17:40:29 -0700, "CalifBill" wrote: "Short Wave Sportfishing" wrote in message m... On Mon, 28 Jul 2008 20:14:30 GMT, "Chuck" wrote: I know... I only post when I have a problem. This happened two weeks ago. The bolt on the front outer piling holding the boat lift cradle pulley sheared right off and the boat went in the drink. Photos of the boat, the bolts, and some telltale corrosion streaks are stored at the links below. www.thespaceexplorers.com/corrodedbolts3.jpg (boat in water) www.thespaceexplorers.com/corrodedbolts1.jpg (3/4 galv. bolts corroded away to nothing) www.thespaceexplorers.com/corrodedbolts2.jpg (bolt rust stains on pulley housing) OK. So my question is.......... is there any way to diagnose a galvanized bolts integrity before it rusts through like this again? I can't seem to find my portable X-ray machine. I also can't quite figure out how to do a simple swapout on the other three. I don't know anybody who swaps their lift bolts out every few years! I'm probably wrong, but that looks like electrolysis. Which means that you have some kind of current leakage somewhere - maybe from a shore charger? Is your boat isolated from shore side current? How about adding some zincs? These are galvanized bolts. Adding zinc to zinc will accomplish little. Casady The zinc on those bolts was long gone. So.... the zinc is just a coating and not mixed into the steel bolts? Yup. They can be electro plated or better hot dipped. |
#44
posted to rec.boats
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Grady White falls off of boat lift - Pics
On Wed, 30 Jul 2008 15:47:42 -0700, "Calif Bill"
wrote: "Richard Casady" wrote in message . .. On Mon, 28 Jul 2008 17:40:29 -0700, "CalifBill" wrote: "Short Wave Sportfishing" wrote in message ... On Mon, 28 Jul 2008 20:14:30 GMT, "Chuck" wrote: I know... I only post when I have a problem. This happened two weeks ago. The bolt on the front outer piling holding the boat lift cradle pulley sheared right off and the boat went in the drink. Photos of the boat, the bolts, and some telltale corrosion streaks are stored at the links below. www.thespaceexplorers.com/corrodedbolts3.jpg (boat in water) www.thespaceexplorers.com/corrodedbolts1.jpg (3/4 galv. bolts corroded away to nothing) www.thespaceexplorers.com/corrodedbolts2.jpg (bolt rust stains on pulley housing) OK. So my question is.......... is there any way to diagnose a galvanized bolts integrity before it rusts through like this again? I can't seem to find my portable X-ray machine. I also can't quite figure out how to do a simple swapout on the other three. I don't know anybody who swaps their lift bolts out every few years! I'm probably wrong, but that looks like electrolysis. Which means that you have some kind of current leakage somewhere - maybe from a shore charger? Is your boat isolated from shore side current? How about adding some zincs? These are galvanized bolts. Adding zinc to zinc will accomplish little. Casady The zinc on those bolts was long gone. OK. Although I would think that simply rplacing the bolts woild be cheaper and easier than adding zincs. Casady |
#45
posted to rec.boats
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Grady White falls off of boat lift - Pics
"Richard Casady" wrote in message ... On Wed, 30 Jul 2008 15:47:42 -0700, "Calif Bill" wrote: "Richard Casady" wrote in message .. . On Mon, 28 Jul 2008 17:40:29 -0700, "CalifBill" wrote: "Short Wave Sportfishing" wrote in message m... On Mon, 28 Jul 2008 20:14:30 GMT, "Chuck" wrote: I know... I only post when I have a problem. This happened two weeks ago. The bolt on the front outer piling holding the boat lift cradle pulley sheared right off and the boat went in the drink. Photos of the boat, the bolts, and some telltale corrosion streaks are stored at the links below. www.thespaceexplorers.com/corrodedbolts3.jpg (boat in water) www.thespaceexplorers.com/corrodedbolts1.jpg (3/4 galv. bolts corroded away to nothing) www.thespaceexplorers.com/corrodedbolts2.jpg (bolt rust stains on pulley housing) OK. So my question is.......... is there any way to diagnose a galvanized bolts integrity before it rusts through like this again? I can't seem to find my portable X-ray machine. I also can't quite figure out how to do a simple swapout on the other three. I don't know anybody who swaps their lift bolts out every few years! I'm probably wrong, but that looks like electrolysis. Which means that you have some kind of current leakage somewhere - maybe from a shore charger? Is your boat isolated from shore side current? How about adding some zincs? These are galvanized bolts. Adding zinc to zinc will accomplish little. Casady The zinc on those bolts was long gone. OK. Although I would think that simply rplacing the bolts woild be cheaper and easier than adding zincs. Casady Zincs are cheap. Just get a block of zinc and wire it to the lift. |
#46
posted to rec.boats
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Grady White falls off of boat lift - Pics
On Jul 28, 3:14 pm, "Chuck" wrote:
I know... I only post when I have a problem. This happened two weeks ago. The bolt on the front outer piling holding the boat lift cradle pulley sheared right off and the boat went in the drink. Photos of the boat, the bolts, and some telltale corrosion streaks are stored at the links below. www.thespaceexplorers.com/corrodedbolts3.jpg (boat in water) www.thespaceexplorers.com/corrodedbolts1.jpg (3/4 galv. bolts corroded away to nothing) http://www.thespaceexplorers.com/cor...olts2.jpg(bolt rust stains on pulley housing) OK. So my question is.......... is there any way to diagnose a galvanized bolts integrity before it rusts through like this again? I can't seem to find my portable X-ray machine. I also can't quite figure out how to do a simple swapout on the other three. I don't know anybody who swaps their lift bolts out every few years! Chuck Thanks for posting this, Chuck. I've sent it on to my son who works with this kind of thing. |
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