Galvanic Corrosion???

Ekea

Well-Known Member
Joined
Aug 11, 2020
Messages
634
Reaction score
214
Points
43
Age
39
Location
Mid Atlantic
Model
Chase
I am planning to mount my fire extinguisher to my t-top frame. i want a firm solid mount without drilling. i am thinking of something like the pic (i know the bar is painted in the pic). would there be any issues with stainless hose clamps on the aluminum t-top frame?

Mount.JPG
 

HMBJack

Well-Known Member
Joined
Dec 11, 2005
Messages
797
Reaction score
142
Points
43
Location
Half Moon Bay, CA.
would there be any issues with stainless hose clamps on the aluminum t-top frame? - eventually yes.

Can make a nice rubber insulator from an old bike tire tube. If cut right, you won't even know it's there.
 
  • Like
Reactions: DogBone and Ekea

Hookup1

GreatGrady Captain
Joined
Oct 16, 2007
Messages
3,035
Reaction score
855
Points
113
Age
70
Location
Cape May, NJ
Model
Islander
I can't quite visualize where this is on the boat. Don't be offended but I think it looks like a real hack job. The fire extinguisher is mounted to the removable bracket? The mate for the bracket is mounted to the aluminum tubing? All of of this is exposed to the sun and salt water?

The clamps should be insulated from the tubing otherwise they will scratch it and you don't want stainless in contact with aluminum. Ancor has a rubber insulated stainless clamp. Would look better than a hose clamp. Not sure what to do around the extinguisher.


Mine is mounted at the helm, lower right outboard side. Bracket came with the extinguisher.
 

Ekea

Well-Known Member
Joined
Aug 11, 2020
Messages
634
Reaction score
214
Points
43
Age
39
Location
Mid Atlantic
Model
Chase
I can't quite visualize where this is on the boat. Don't be offended but I think it looks like a real hack job. The fire extinguisher is mounted to the removable bracket? The mate for the bracket is mounted to the aluminum tubing? All of of this is exposed to the sun and salt water?

The clamps should be insulated from the tubing otherwise they will scratch it and you don't want stainless in contact with aluminum. Ancor has a rubber insulated stainless clamp. Would look better than a hose clamp. Not sure what to do around the extinguisher.


Mine is mounted at the helm, lower right outboard side. Bracket came with the extinguisher.
so that is a pic from the website. its actually a mount for a rollbar for a jeep. i would mount it in the spot in the pic below. the extinguisher is mounted to the bracket as you mentioned which is a pull pin quick release to get it off the mounting base.

Mount 2.JPG
 

Hookup1

GreatGrady Captain
Joined
Oct 16, 2007
Messages
3,035
Reaction score
855
Points
113
Age
70
Location
Cape May, NJ
Model
Islander
That is a lot more access then I need! You have a different cockpit layout than mine. Maybe some of the other CC owners will comment.
 

billbass

Well-Known Member
Joined
Jan 14, 2023
Messages
82
Reaction score
10
Points
8
Age
64
Model
Freedom 235
Two cautions.
1.) It looks cool up there but: if your bracket were to crack, twist, fail etc. and let the extinguisher fall someone might be hurt badly. Think what things might be like during harsh smacks against waves, rough seas etc. It could also fall at one of the worst possible times. I wouldn’t advise that. Most brackets are just plastic. Aluminum without some very costly salt protective treatment won’t last long if exposed to salt. Such a bracket could deteriorate and not be noticed.
2. I’d caution against using “worm gear clamps” (as in your pics), especially if they are longer than needed. They often have very sharp band ends. In a boat I don’t like pointed things or sharp things where anyone might get poked or cut. I have industrial customers who won’t allow ANY worm gear clamps in the plant.
 
  • Like
Reactions: Ekea

glacierbaze

Well-Known Member
Joined
Jul 6, 2012
Messages
2,485
Reaction score
644
Points
113
Age
75
Location
Chapel Hill and Pine Knoll Shores, NC
Model
Seafarer
And, the reason most of us have probably never seen a horizontal fire extinguisher, unless it was DIY, and especially on a moving vehicle, is that the powder will pack the nozzle, and you may have a misfire at the worst possible time.
 

Halfhitch

GreatGrady Captain
Joined
Nov 11, 2017
Messages
1,412
Reaction score
457
Points
83
Location
Venice, Florida
Ekea, you don't know it yet, but you don't want to do that. If you do do that, then the day will come when you will say, "I don't know why I didn't listen to those guys".
 

Fishtales

Well-Known Member
Joined
Jan 31, 2005
Messages
8,029
Reaction score
1,286
Points
113
Don't use dissimilar metals of you will get what you fear... I'd look for phenolic or plastic mount idea. You could always put rubber between the different metals if you really want to do it.
 

Ekea

Well-Known Member
Joined
Aug 11, 2020
Messages
634
Reaction score
214
Points
43
Age
39
Location
Mid Atlantic
Model
Chase
And, the reason most of us have probably never seen a horizontal fire extinguisher, unless it was DIY, and especially on a moving vehicle, is that the powder will pack the nozzle, and you may have a misfire at the worst possible time.
this is a very good point. thanks for the input