Does the sacrificial metal have to be bolted onto the hull? Or can I attach using some sort of adhesive?
I've been getting some pitting near my props and I was going to epoxy some strips near that area. Do they only work if grounded to the hull? Or do they function just be being there?
Do the Anodes have to be bolted to the hull or can they by glued?
Do the Anodes have to be bolted to the hull or can they by glued?
37 Sedan Twin CAT 3208's "Under Way is the Only Way".
- shade2u2
- Royal Aluminum Star
- Posts: 290
- Joined: Mon Jul 21, 2014 3:11 pm
- Location: Marietta, Ohio -mile marker 172
Re: Do the Anodes have to be bolted to the hull or can they by glued?
I believe that they need to have good surface contact with the hull - or shaft or tabs or rudder...
John
1986 39 Sedan w/Crusader 454 & 1.92 drive.
former - '84 28 Express Hardtop w/single 360 1.5:1 drive (SOLD - now in Uruguay)
Ohio and Muskingum Rivers (Marietta, OH)
1986 39 Sedan w/Crusader 454 & 1.92 drive.
former - '84 28 Express Hardtop w/single 360 1.5:1 drive (SOLD - now in Uruguay)
Ohio and Muskingum Rivers (Marietta, OH)
Re: Do the Anodes have to be bolted to the hull or can they by glued?
Bolted, welded, or you could glue them only if you had a bonding wire connected from the anode to the hull/rudder/tab/etc. Bolting is easiest.
Muskegon Lake
1972 32' Express flybridge
"AL13"
Twin 318s
On board air & prime 920
1963 Thompson Super Sea Lancer
Graymarine 327
1961 Alumacraft 12'
'55 10hp Johnson
1972 32' Express flybridge
"AL13"
Twin 318s
On board air & prime 920
1963 Thompson Super Sea Lancer
Graymarine 327
1961 Alumacraft 12'
'55 10hp Johnson
Re: Do the Anodes have to be bolted to the hull or can they by glued?
Using adhesive to attach anodes prevents the two metals from making contact which is the opposite of what you must achieve. Very bad (and useless) idea -sorry to disappoint. Assuming your keel anodes are properly attached, what's the condition of the anodes on your trim tabs and rudders? Is the shaft properly isolated?
-joel-
former owner 1988 '32 FB Sedan
Chesapeake Bay
twin 318 / 240 hp
Potomac MD
former owner 1988 '32 FB Sedan
Chesapeake Bay
twin 318 / 240 hp
Potomac MD
Re: Do the Anodes have to be bolted to the hull or can they by glued?
My anodes are getting eaten up and there was still some pitting. I do Not want to drill through the hull to mount additional stuff near the props so I guess I will just replace what I can where it was originally placed.
37 Sedan Twin CAT 3208's "Under Way is the Only Way".
- shade2u2
- Royal Aluminum Star
- Posts: 290
- Joined: Mon Jul 21, 2014 3:11 pm
- Location: Marietta, Ohio -mile marker 172
Re: Do the Anodes have to be bolted to the hull or can they by glued?
Most are like these. I have not seen a Marinette with anodes on the hull other than the Keel.
I added small disks as an experiment to monitor protection...
I should probably add one to the rudder.
TRIM TAB
RUDDER & SHAFT
KEEL
I added small disks as an experiment to monitor protection...
I should probably add one to the rudder.
TRIM TAB
RUDDER & SHAFT
KEEL
John
1986 39 Sedan w/Crusader 454 & 1.92 drive.
former - '84 28 Express Hardtop w/single 360 1.5:1 drive (SOLD - now in Uruguay)
Ohio and Muskingum Rivers (Marietta, OH)
1986 39 Sedan w/Crusader 454 & 1.92 drive.
former - '84 28 Express Hardtop w/single 360 1.5:1 drive (SOLD - now in Uruguay)
Ohio and Muskingum Rivers (Marietta, OH)
Re: Do the Anodes have to be bolted to the hull or can they by glued?
They are SACRAFICIAL anodes. They are meant to dissolve. Go to BoatZincs.com to find out what kind and how many you need. Or call them up, they are helpful. Buy your anodes here too, they have the best prices. Good luck with your boat--
BUSIA
located in Ketchikan, Alaska. Gods country
32 foot Marinette (no fly bridge)
twin 350 Crusader (Chev 350) engines
1:1 Borg Warner velvet drive transmissions
Closed cooling (antifreeze in the engine)
Proud to be retired IBEW and an A+P
located in Ketchikan, Alaska. Gods country
32 foot Marinette (no fly bridge)
twin 350 Crusader (Chev 350) engines
1:1 Borg Warner velvet drive transmissions
Closed cooling (antifreeze in the engine)
Proud to be retired IBEW and an A+P
Re: Do the Anodes have to be bolted to the hull or can they by glued?
In the 20+ yrs I've been following Marinette forum posts, no one has suggested or reported attempting to mount anodes by attaching them to the hull. Way, way too much risk of failure (although other items such as CAPAC, depth sounders do get attached to the hull because they are sealed with a marine caulk and anodes are not).Red5 wrote:My anodes are getting eaten up and there was still some pitting. I do Not want to drill through the hull to mount additional stuff near the props so I guess I will just replace what I can where it was originally placed.
As noted above, and with photos, the points are keel, trim tabs, rudders, shaft (but really not needed if shaft is isolated).
Do you have CAPAC - what does the meter show?
Is it possible to include photos? Or better describe area that's pitted? Someone may have some helpful suggestion for you
-joel-
former owner 1988 '32 FB Sedan
Chesapeake Bay
twin 318 / 240 hp
Potomac MD
former owner 1988 '32 FB Sedan
Chesapeake Bay
twin 318 / 240 hp
Potomac MD
- tundrarules
- Aluminum Star
- Posts: 145
- Joined: Fri Jul 11, 2014 11:17 pm
Re: Do the Anodes have to be bolted to the hull or can they by glued?
Red5, you still out there? Sounds like you may have a little stray current around your boat somewhere. Looks like you are in freshwater and will need Mil-Spec A-24779(SH) aluminum alloy (also called KA90 or SEALLOY 150) http://www.boatzincs.com/marinette-bar.html . They also sell guppies/ hanging anodes. I hang one off the side of my boat for a little extra protection.
1985 29 Sedan
Edelbrock 1409 carbs
Mallory distributors
Pertronix Flame-Thrower coil & wires
780 hrs/eng
TN River, MM 213.8
Edelbrock 1409 carbs
Mallory distributors
Pertronix Flame-Thrower coil & wires
780 hrs/eng
TN River, MM 213.8