Yes Danny, the prop is bronze....boat is launched mid-May and hauled
mid-October.....and it is used almost every day.....last Summer, I had
the boat out for a sail exactly 120 days and every day the engine is
used, so the prop is 'spinning'. My prop is practically encased in
mussels at haulout, thus my obsession with trying to keep it clean. And
yes, I polish mine as well....it shines after it gets it final cleaning
with Brasso.
Bob Abbott
AZURA
C&C 32 - 84
Halifax, N.S.
On 2013/01/07 3:23 PM, djhaug...@juno.com wrote:
Is the prop bronze? I polished mine up and that was it. I didn't launch until
August but, there was nothing on the prop in late September when I had to dive
and tighten up the zincs on my prop shaft and nothing at haul out in November...
I don't think they like bronze. There was no growth on the untreated raw water
inlet strainer either.
Danny.
Lolita
Viking 33
Westport Point, MA
---------- Original Message ----------
From: Martin DeYoung <mdeyo...@deyoungmfg.com>
To: "cnc-list@cnc-list.com" <cnc-list@cnc-list.com>
Subject: Re: Stus-List Prop Mussel Farm
Date: Mon, 7 Jan 2013 19:16:02 +0000
Bob,
I have used Pettit's Zinc Coat Barnacle Barrier #1792 (locally $16 to $17 per
rattle can) for more than 10 years. I have been very satisfied with the
results.
Here in the Puget Sound area (cold dark salt water) it keeps growth off the
prop and shaft for up to two years. One can covers a three bladed MAX prop,
the SS strut, and the SS shaft. Calypso stays in the water year round. After
about 18 months tiny barnacles will begin to appear.
Application is easy. I give the prop, strut, and shaft a light sanding, clean with
solvent, then apply several coats with (at >50F) 1 � hours drying time
between coats.
Martin
Calypso
1970 C&C 43
Seattle
-----Original Message-----
From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Robert Abbott
Sent: Monday, January 07, 2013 10:55 AM
To: cnc-list@cnc-list.com
Subject: Stus-List Prop Mussel Farm
The topic is back.....last year, in an attempt to inhibit the growth of
mussels on the prop and prop shaft, I coated them with lanolin.....was
told or read this would help. When the boat was hauled in October, the
prop/shaft were completely encased in mussels, again. The growth has a
noticeable, negative effect on the performance of the prop later in the
season e.g. higher RPM's to attain same cruising speed when motoring.
After trying a few so called 'remedies', I am now convinced the only
effective way to keep the prop free of marine growth (mussels on mine)
is to dive a few times a season and physically remove them. Maybe I
need a few pounds of lead, my safety harness on and tethered to the
toerail and a few feet of hose the top end tied to the pushpit and me
breathing from the bottom end.
However, before I comtemplated something like that, there is one more
'remedy' I have heard/read about......it involves coating the prop/shaft
with "galvanized zinc spray paint". I have never seen this done and do
not know what effect it might have on the bronze prop (shouldn't be
negative but I'm not sure). There is never any marine growth on my
sacrificial zinc(s).
Has anyone heard of this? Anyone with any experience with this paint on
props?
Bob Abbott
AZURA
C&C 32 - 84
Halifax, N.S.
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