alpha one gen 2 exhaust bellows

[tpenfield]

The Mercathode system puts a small drain on the battery (15 ma +/-) . . . some folks shut it off (circuit breaker) if they leave their boat in a slip for extended periods of time without use. So, it defeats the purpose.

 

[j cat]

Interesting read on the Mercathode concept. It was marina kept in fresh water. I doubt this boat was plugged into shore power, but others may have been. I used to have a bass boat and I would plug my trolling battery charger into A/C over night. Is that the kind of example that may create galvanic action in the water?

remove the negative battery terminal then charge the battery .

 

[achris]

remove the negative battery terminal then charge the battery .

Galvanic corrosion has nothing to do with the negative of the battery, it's how the AC side of the charger is wired.

Chris....

 

[j cat]

Galvanic corrosion has nothing to do with the negative of the battery, it's how the AC side of the charger is wired.

Chris....

well I am a electronic tech in the navy . I put a ac computer controller battery charger , ,remove the ground neg on the battery then charge it .. stop using electrical currents to eat the metal . marinas plug in on the boats then the ac current creates metal wear ..many use larger plates connected to the ground ,
as they use the ac power on the boat ac electrical power system .
fiberglass boats have no metal.. then the out drive / props kill the metal damage. the ac power ground is a different boat location then the current flows .

 

[achris]

... I put a ac computer controller battery charger , ,remove the ground neg on the battery then charge it .. stop using electrical currents to eat the metal .

You're probably not using a charger with an isolating transformer. Most modern electronics ties AC ground (which in the M.E.N. system is also the AC return) to output negative. You connect that to the battery and you have an AC signal on the negative, and that's what causes any metal in any boats whereby to get eaten away. Lifting the negative doesn't solve the problem, it merely masks it until the day you forget, and come back to find your drive gone, and a bill for new drives from the 17 boats around you.

Chris......

 

[j cat]

Interesting read on the Mercathode concept. It was marina kept in fresh water. I doubt this boat was plugged into shore power, but others may have been. I used to have a bass boat and I would plug my trolling battery charger into A/C over night. Is that the kind of example that may create galvanic action in the water?

I used the battery charger a computer controller. also the ac plug does to connect to the battery power wires . https://www.amazon.com/Schumacher-SC1300-Automatic-Battery-Maintainer/dp/B0000AXTUY?th=1 ,,,,,.........
I also bought 3 and I charge my Lamborghini and my Rolls Royce ..
works 10yrs ...probably now 50 bucks .. now I payed 25 bucks 10yrs ago ..

 

[poconojoe]

Put a fresh set of anodes and keep an eye on the corrosion. Lots of folks in fresh water think they don't have to take care of their outdrives . . . but in fact they do.

Also check that the bonding wires are in place.
I saw some minor pitting on my pristine outdrive and noticed a bonding wire had broken off. I painted the small spots and reattached the bonding wire and no more pitting.

 

[j cat]

Also check that the bonding wires are in place.
I saw some minor pitting on my pristine outdrive and noticed a bonding wire had broken off. I painted the small spots and reattached the bonding wire and no more pitting.

I used a liquid tape electrical ... on the connector wire lug install then coated it.. metal is different and then corrosion eats up on the connection ..
https://www.amazon.com/Performix-LT14023-Electrical-Liquid-Black/dp/B000LNKIFS not in stock ..