[C320-list] Prop shaft anode

[Charles Holbrook]

Daryl:
I sail a C320 in the southwest corner of lake erie (fresh water) and experience the same accumulation of mineral deposits on prop and shaft.  I just use a brass wire brush on the end of my cordless drill to brush clean-up before spring launch.  
Charlie     On Friday, May 10, 2019, 6:04:50 PM CDT, John morrison <sail-ability at sympatico.ca> wrote:  
 
 You should be using a Mg anode and not Al.
Regards
JEM
1999#574
> On May 10, 2019, at 6:10 PM, Daryl Hunt <drhunt at rochester.rr.com> wrote:
> 
> Hi all,
> 
>    I'm a fresh water, Great Lakes sailor with the '99 C320 #660 "Believe."  Over the last few seasons I've noticed my prop shaft is covered with a rough brown mineral-like coating when I haul out at the end of season. It also coats the stainless steel components of my Kiwiprop. It's not organic and can only be removed by sanding.  My first thought was that it was electrolysis of the shaft, but the anode had clearly been doing its job and well pitted.  My theory is that the aluminum anode (recommended for fresh water) was depositing aluminum oxide on the shaft.  Has anyone of you other fresh water 320 owners experienced this?  The deposit cleans up fairly easily with #200 grit sandpaper.
> 
> -- 
> Best regards,
> Daryl Hunt
> s/v Believe, C320 #660 Pultneyville, NY / Lake Ontario
> 
> 
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