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01-30-2017, 10:59 AM
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#1
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Guru
City: San Francisco
Vessel Name: Speedy Charlotte
Vessel Model: Beneteau Swift Trawler 44
Join Date: Oct 2016
Posts: 679
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Anodes
I'm looking to install fresh aluminum anodes on my ST44. Boat will be shipped to the Bay Area soon but wanted to buy the anodes online prior to the arrival of the boat.
Does anyone happen to have a list of all the anodes required on the ST44?
Thanks!
Mike
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11-04-2017, 09:10 AM
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#2
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Guru
City: Z
Vessel Model: tbd
Join Date: Mar 2017
Posts: 1,027
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looking for the same, thanks
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11-04-2017, 11:48 AM
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#3
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Senior Member
City: Cape Cod, MA or Fort Myers, FL
Vessel Name: Osprey
Vessel Model: Her Shine. Newburyport
Join Date: Dec 2013
Posts: 389
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11-04-2017, 02:25 PM
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#4
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Guru
City: San Francisco
Vessel Name: Speedy Charlotte
Vessel Model: Beneteau Swift Trawler 44
Join Date: Oct 2016
Posts: 679
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Quote:
Originally Posted by mystery
looking for the same, thanks
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Here you go. Note that all of the following are part numbers for the Aluminum anodes, not Zinc.
You'll need:
- (2) Prop nut anodes
- (4) shaft anodes (I have 2 per shaft on my boat)
- (4) thruster anodes (one for each side of the bow thruster, and one for each side of the stern thruster -- if you have a stern thruster)
- (2) rudder anodes that attach to the trim tabs, not to the rudders (my boat does not have rudder anodes)
- (1) big anode for the transom
Here are the items to order.
NOTE: You won't find the 50mm prop and shaft anode parts on their website. Just send them an email and they can add them to the order for you.
(2) CMAN250A Martyr Aluminum 50mm Prop Nut Anodes
(4) CMX50AL Martyr Aluminum Streamlined Shaft Anode to fit 50mm shaft
(4) TQ18500AL Aluminum Anode Quick BTQ/BTR Thruster w/ 185mm Tunnel
(2) R-3A Rudder Aluminum Anode - 3-3/4" Dia. (for trim tabs)
(1) DP-612A Aluminum Anode (for transom)
On my ST44, the rudders do not have any anodes as they are wired to the transom anode I believe. If your ST44 has rudder anodes, you can just order 2 more of the R-3A's for the rudders.
Hope this helps.
Mike
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11-04-2017, 06:59 PM
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#5
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Guru
City: Z
Vessel Model: tbd
Join Date: Mar 2017
Posts: 1,027
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Quote:
Originally Posted by MichaelB1969
Here you go. Note that all of the following are part numbers for the Aluminum anodes, not Zinc.
You'll need:
- (2) Prop nut anodes
- (4) shaft anodes (I have 2 per shaft on my boat)
- (4) thruster anodes (one for each side of the bow thruster, and one for each side of the stern thruster -- if you have a stern thruster)
- (2) rudder anodes that attach to the trim tabs, not to the rudders (my boat does not have rudder anodes)
- (1) big anode for the transom
Here are the items to order.
NOTE: You won't find the 50mm prop and shaft anode parts on their website. Just send them an email and they can add them to the order for you.
(2) CMAN250A Martyr Aluminum 50mm Prop Nut Anodes
(4) CMX50AL Martyr Aluminum Streamlined Shaft Anode to fit 50mm shaft
(4) TQ18500AL Aluminum Anode Quick BTQ/BTR Thruster w/ 185mm Tunnel
(2) R-3A Rudder Aluminum Anode - 3-3/4" Dia. (for trim tabs)
(1) DP-612A Aluminum Anode (for transom)
On my ST44, the rudders do not have any anodes as they are wired to the transom anode I believe. If your ST44 has rudder anodes, you can just order 2 more of the R-3A's for the rudders.
Hope this helps.
Mike
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Thank you!!
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02-04-2018, 09:55 PM
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#6
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Guru
City: Z
Vessel Model: tbd
Join Date: Mar 2017
Posts: 1,027
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Hi Mike,
By any chance do you have the part #s for aluminum anodes for the D4 and Onan genset? Did anyone say anything against switching those to aluminum?
Thank you!
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02-04-2018, 09:56 PM
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#7
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Guru
City: Z
Vessel Model: tbd
Join Date: Mar 2017
Posts: 1,027
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PS. Does anyone's ST44 have rudder anodes installed from the factory?
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02-04-2018, 10:55 PM
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#8
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Guru
City: San Francisco
Vessel Name: Speedy Charlotte
Vessel Model: Beneteau Swift Trawler 44
Join Date: Oct 2016
Posts: 679
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Quote:
Originally Posted by mystery
Hi Mike,
By any chance do you have the part #s for aluminum anodes for the D4 and Onan genset? Did anyone say anything against switching those to aluminum?
Thank you!
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Just call Bob at Boatzincs and he can special order. If you give him the part# for the zinc version he can order the aluminum for you.
Bob Olsen
BoatZincs.com
Tel: 978-841-9978 Fax: 866-763-2628
bob@BoatZincs.com www.BoatZincs.com
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02-04-2018, 11:43 PM
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#9
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Guru
City: Sharon, Ma
Vessel Name: Slow Lane
Vessel Model: 2005 Silverton 35 Motoryacht
Join Date: May 2017
Posts: 1,167
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Interesting. A local company to me! I'll use them this spring, thanks.
__________________
Jason
2005 Silverton 35 Motoryacht
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02-05-2018, 01:42 AM
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#10
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Guru
City: San Francisco
Vessel Name: Speedy Charlotte
Vessel Model: Beneteau Swift Trawler 44
Join Date: Oct 2016
Posts: 679
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Quote:
Originally Posted by mystery
PS. Does anyone's ST44 have rudder anodes installed from the factory?
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Nope
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02-05-2018, 01:43 AM
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#11
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Guru
City: San Francisco
Vessel Name: Speedy Charlotte
Vessel Model: Beneteau Swift Trawler 44
Join Date: Oct 2016
Posts: 679
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Quote:
Originally Posted by MichaelB1969
Nope
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Oops, just realized I already noted mine does not have rudder anodes.
Does anyone else have them on their ST44?
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02-05-2018, 05:48 AM
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#12
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Senior Member
City: WAALRE
Vessel Name: Mr. Blu
Vessel Model: Beneteau Swift Trawler 52
Join Date: Jun 2017
Posts: 147
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Why do you want aluminium anodes in stead of zinc anodes? The diference in electrical potential between aluminium and other metal sorts is larger than the difference between zinc and other metal sorts. This is important to know because the electrical resistance in fresh water is higher than in salt water. Aluminium anodes are for fresh water. When you are on salt water the zinc anodes are preferable.
__________________
Paul
Cruising the Netherlands
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02-05-2018, 06:19 AM
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#13
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Guru
City: Z
Vessel Model: tbd
Join Date: Mar 2017
Posts: 1,027
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Quote:
Originally Posted by Mr. Blu
Why do you want aluminium anodes in stead of zinc anodes? The diference in electrical potential between aluminium and other metal sorts is larger than the difference between zinc and other metal sorts. This is important to know because the electrical resistance in fresh water is higher than in salt water. Aluminium anodes are for fresh water. When you are on salt water the zinc anodes are preferable.
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Boat will be in brack-ish water this summer. I figured I'd switch to aluminum as the andoes need replacing.
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02-05-2018, 06:57 PM
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#14
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Senior Member
City: SOMERS POINT, NJ
Vessel Name: SOJOURN
Vessel Model: SWIFT TRAWLER 44
Join Date: Feb 2012
Posts: 172
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No rudder zincs on our ST44
Boat Zincs is the place and they do carry the zincs for the thrusters.
I also order a few tubes of thread lock when I install the prop zincs
Good Luck
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02-05-2018, 07:33 PM
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#15
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Guru
City: San Francisco
Vessel Name: Speedy Charlotte
Vessel Model: Beneteau Swift Trawler 44
Join Date: Oct 2016
Posts: 679
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Quote:
Originally Posted by Mr. Blu
Why do you want aluminium anodes in stead of zinc anodes? The diference in electrical potential between aluminium and other metal sorts is larger than the difference between zinc and other metal sorts. This is important to know because the electrical resistance in fresh water is higher than in salt water. Aluminium anodes are for fresh water. When you are on salt water the zinc anodes are preferable.
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Based on the research I've done, Aluminum provides the following advantages:
1. Lasts longer than Zinc
2. Better for the environment
3. Protects in any type of water
You might choose Zinc if either of the following are true:
1. Boat is in tropical (very warm) waters, as Zinc will actually last longer than Aluminum in such environments
2. Boat will sit at anchor or in a slip for extended periods, as Zinc "sloughs" better than Aluminum, which can form a "crust" that inactivates the anode.
Zinc anodes have historically been cheaper than Aluminum anodes, which is likely why they have been much more popular. More recently, Aluminum prices have come down and in some cases Aluminum anodes are less expensive, which is driving up their popularity.
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02-05-2018, 07:46 PM
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#16
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Guru
City: Z
Vessel Model: tbd
Join Date: Mar 2017
Posts: 1,027
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Quote:
Originally Posted by MichaelB1969
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They say they do not carry pencil anodes in aluminum.. any chance you have a part # or copy of your receipt from them? Thank you
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02-05-2018, 07:56 PM
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#17
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Guru
City: San Francisco
Vessel Name: Speedy Charlotte
Vessel Model: Beneteau Swift Trawler 44
Join Date: Oct 2016
Posts: 679
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Quote:
Originally Posted by mystery
They say they do not carry pencil anodes in aluminum.. any chance you have a part # or copy of your receipt from them? Thank you
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Did you speak to Bob directly?
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02-05-2018, 08:05 PM
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#18
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Guru
City: San Francisco
Vessel Name: Speedy Charlotte
Vessel Model: Beneteau Swift Trawler 44
Join Date: Oct 2016
Posts: 679
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Quote:
Originally Posted by mystery
They say they do not carry pencil anodes in aluminum.. any chance you have a part # or copy of your receipt from them? Thank you
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They carry Martyr (among other brands).
I think the part number is Martyr #CM838929A
Check their catalog, page 116:
http://martyranodes.com/sites/defaul...g-web-2017.pdf
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02-06-2018, 08:13 AM
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#19
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TF Site Team
City: Jacksonville
Join Date: Nov 2008
Posts: 11,682
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Performance Metal Products also makes spec aluminum pencil anodes. I like the aluminum pencils anodes since they have a metal wire core. They don’t break off in from of the heat exchanger like the zincs did.
https://performancemetals.com/collections/pencil-anodes
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03-08-2018, 03:23 PM
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#20
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Guru
City: Z
Vessel Model: tbd
Join Date: Mar 2017
Posts: 1,027
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As an update, even though I usually dock on a fresh water river that meets a saltwater sound, according to the USCAE, the salt content is high. I decided that I am going to stick with Zincs on this boat. I probably did not need to change from zinc to aluminum on my last two boats :/
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