We just pulled the boat and got a chance to look at the results of our one-season experiment with aluminum anodes on the Upper Chesapeake.
The anodes on the prop and the shaft (all aluminum) are substantially more degraded than we have traditionally seen with zinc. Of course, something other than the selection of material could theoretically explain the difference, like new problems in a neighboring slip, but nevertheless, the difference is striking.
Now, is the increase in degradation a good thing or a bad thing? Should we stay with aluminum at least one more year?
I've never seen anodes for engines or heat exchangers offered with anything other than zinc. despite the fact that least one reference I've seen sternly cautions against mixing types on the same vessel.
Bill
The anodes on the prop and the shaft (all aluminum) are substantially more degraded than we have traditionally seen with zinc. Of course, something other than the selection of material could theoretically explain the difference, like new problems in a neighboring slip, but nevertheless, the difference is striking.
Now, is the increase in degradation a good thing or a bad thing? Should we stay with aluminum at least one more year?
I've never seen anodes for engines or heat exchangers offered with anything other than zinc. despite the fact that least one reference I've seen sternly cautions against mixing types on the same vessel.
Bill
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