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Post by freezerfiller on Jan 18, 2013 7:29:23 GMT -6
Some of you may remember I replaced my anodes on my outboard only to find out the old ones were perfectly fine. I was doing some work on my Wesco aluminum trailer, and I noticed that my axle flanges and leaf springs were rather rusty. I was wondering since I have a zinc anode on the shelf and a open bolt hole on the axle flange, why not bolt the puppy to the axle flange and let the anode take the oxidation instead of my flanges and leafs. Anybody know any reason not to do this?  |
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Post by Juan on Jan 18, 2013 7:41:35 GMT -6
I doubt it would work or they would be on all trailers... The corrosion on the trailer is probably due to salt and exposure to the elements and the anodes wouldn't stop that... they're designed to attract the damaging electricity that the motor creates running through the water.
Now if you launch the boat with the trailer still attached.... you might be on to something. ;D
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Post by freezerfiller on Jan 18, 2013 8:54:51 GMT -6
Anodes are used on all kinds of things without motors... Here's a vid that explains how they work. If you don't get into electrochemistry, you might want to bump out to about 8 minutes in.. Edit... better yet, here is a much less boring way: www.anoguard.com/anodes.htm Essentially they just give an easier place for rust to occur than the steel they are attached to. |
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Post by Simple Man on Jan 18, 2013 8:57:51 GMT -6
juans right. It has to be in water for the chemistry to work. Air is a different set of issues. Edit. To answer your question though, I cant think of a reason NOT to do it. You will be protected while your trailer is in the water. Maybe your "THAT GUY" always in front of me that takes 30 minutes to get his boat on and off the trailer!  |
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Post by freezerfiller on Jan 18, 2013 9:06:14 GMT -6
Hmm, You are right, it does require water, or at least humidity. I don't see why the anode would dry any faster than my axles, but the spaces between the leafs would be wet long after. Maybe I could carpet it..
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Post by freezerfiller on Jan 18, 2013 9:17:48 GMT -6
Nevermind.... It just dawned on me that I already have an anode....the galvanized coating on my axles.... I might do it anyway, it will match my tin foil hat!
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Deleted
Deleted Member
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Post by Deleted on Sept 11, 2014 0:50:38 GMT -6
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yolo
Ensign
Posts: 626
Location: Back to Manasquan Inlet, NJ
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Post by yolo on Sept 11, 2014 8:51:03 GMT -6
Heres some more reading www.boatus.com/boattech/casey/sacrificial-zincs.asp. Zincs make their money in marinas where you have boats hooked to electrictly and running all the time, ALOT of current runs through the water and the zincs take those currents. The leafs are, most likely, made out of the Flex Steel so they will, most likely, get rust over time. If you are dropping it in salt water best thing to do is spay the trailer down when your done (i hit mine with salt away) because the salt acellerates corrosion. When it snows up here they put salt down on all the roads to melt the snow and corrodes components all the way up into the engine of cars and trucks. I built an undercarraige wash for my trucks out of valves and PVC pipe. After a day on the road i drive the truck over it, use the salt away you buy in any marine store, run a mix of that and water then just water to rinse. Has been working very well so far. So, just spray the trailer down if your in salt and it should help but in damp areas of the country its really inevitable. |
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Post by acdaddy0 on Sept 11, 2014 13:33:24 GMT -6
I would like to add my two cents in. Just because someone sells it and says it works doesn't mean squat! In the air conditioning market they sell a zinc anode to attach to the copper refrigerant line claiming it will stop corrosion of the alluminum fins on condensor from salt air at the beach. IT DOES NOT WORK AT ALL! They sell them though. Zinc galvanize coating protects trailer but an anode attached to something in air? Nah! However something sitting in water where there is electrical current present, yes! Trolling motor shaft, trim tabs and any where on outboard a must have. I had a johnson and after years I noticed that the anode still looked brand new, it was installed on a newly painted foot, (the anode wasn't painted) and previous owner had used thread sealant on bolts so it wasn't grounded properly, thus doing nothing. It wasn't till I tried to remove foot bolts to replace water pump that I realized the damage. Bolts seized and broke two off. Sold boat. I ohm mine now to block to make sure they're working.
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Post by freezerfiller on Sept 11, 2014 19:41:38 GMT -6
good point acdaddyo. I would have never thought about someone doing that.
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Post by acdaddy0 on Sept 12, 2014 15:56:57 GMT -6
I pulled the anode on my current johnson, scraped the paint off mating surface and cleaned bolt and anode contact points. Attach a lead to motor head bolt and stuck other Lead in zinc tab zero ohms or full continuity. Good to go! I'm gonna get another one for front of cavitation plate and am looking for a zinc trim tab ( steering tab) for johnson but haven't had any luck so far.
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