Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-12-2017, 06:59 PM   #141
Guru
 
Fletcher500's Avatar
 
City: San Diego
Vessel Model: Helmsman 4304
Join Date: May 2016
Posts: 1,691
So-Cal waters have a lot of critters, especially in the summer. We are at 3 week intervals in the summer, and 4-5 the rest of the year.


Anyone use the spray on "Barnacle Blocker"?
Fletcher500 is offline   Reply With Quote
Old 11-12-2017, 07:22 PM   #142
Guru
 
tadhana's Avatar
 
City: New England and Canada to Florida
Vessel Name: Tadhana
Vessel Model: Helmsman 38 Pilothouse
Join Date: Jul 2011
Posts: 596
Quote:
Originally Posted by Tom.B View Post
So Iím not saying that Prop Glop hasnít worked for you, but I think it is highly likely that because you used your boat over 600 hours per year probably has a lot more to do with your clean running gear than anything. Find something that works for those of us that only use our boats less than 100 and you would be onto something. :-)
I agree with you, that the prop has turned about 30 million revs per year and and that could account for the lack of barnacles. That being said, the inventors of Prop Glop invented it for boats which sit a lot. So our own application is suboptimal according to the manufacturer. At $35 for a stick, it might be worth giving it a try. BTW if you apply it in the water, it is recommended that you wear a full wet suit. Apparently it burns if you get it on your skin. Also, it takes a bit of practice to get a coat on the prop thoroughly and evenly. I do not have any involvement with the company. A diver in FL recommended it. I'm just reporting on our observations. YMMV.
tadhana is offline   Reply With Quote
Old 11-12-2017, 09:56 PM   #143
Guru
 
Nomad Willy's Avatar
 
City: Concrete Washington State
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 18,404
Fletcher,
I have used Pettit “Barnacle Buster” and found it worked somewhat.

But you may actually have a different product called Barnacle Blocker.
I posted in the event you got the name wrong.
__________________
Eric

North Western Washington State USA
Nomad Willy is offline   Reply With Quote
Old 11-13-2017, 11:05 AM   #144
Guru
 
tadhana's Avatar
 
City: New England and Canada to Florida
Vessel Name: Tadhana
Vessel Model: Helmsman 38 Pilothouse
Join Date: Jul 2011
Posts: 596
FYI if you look carefully at the contents on a can of Pettit Barnacle Buster, and then at a can of Rustoleum cold galvanizing, you will notice two things. First of all the ingredients are exactly the same. Second of all, the prices are very different. Many east coast boatyards are using zinc spray. Most are using the Rustoleum.
tadhana is offline   Reply With Quote
Old 11-14-2017, 06:21 AM   #145
Guru
 
cappy208's Avatar
 
City: Cape Cod
Vessel Name: Slip Aweigh
Vessel Model: Prairie 29
Join Date: Oct 2013
Posts: 1,219
I canít seem to edit my earlier post. The Velox treatment was $96.00 for the half pints of etch and bottom paint.
cappy208 is offline   Reply With Quote
Old 12-17-2017, 03:42 PM   #146
Guru
 
Fletcher500's Avatar
 
City: San Diego
Vessel Model: Helmsman 4304
Join Date: May 2016
Posts: 1,691
Quote:
Originally Posted by tadhana View Post
FYI if you look carefully at the contents on a can of Pettit Barnacle Buster, and then at a can of Rustoleum cold galvanizing, you will notice two things. First of all the ingredients are exactly the same. Second of all, the prices are very different. Many east coast boatyards are using zinc spray. Most are using the Rustoleum.
A couple questions for folks who have used this, or similar coatings:

There are various versions of this...Is this the correct stuff?
Ok to use on both the shaft and prop?
Are 1 to 2 cans enough to spray a prop and shaft?
One coat sufficient?
Drying time allow splash after a few hours?

Thanks, Fletch.
Attached Thumbnails
Capture.jpg  
Fletcher500 is offline   Reply With Quote
Old 12-17-2017, 04:48 PM   #147
Guru
 
Simi 60's Avatar
 
City: Queensland
Vessel Model: Milkraft 60 converted timber prawn trawler
Join Date: Jul 2016
Posts: 4,157
Quote:
Originally Posted by cappy208 View Post
I keep reading how copper bottom paint is bad on props and draws the zinc out of them weakening them. .
So don't put anti foul directly on prop.
Our prop, nozzle and rudder, all bronze, gets a layer of jotamastic first, then anti foul.
Apparently that's how a lot of the working trawlers do it.
18mths since last slip, most of its pretty clean down there, speed/rpm has not changed even though there were gardens growing around our numerous anodes.
Simi 60 is offline   Reply With Quote
Old 12-17-2017, 04:54 PM   #148
Guru
 
cappy208's Avatar
 
City: Cape Cod
Vessel Name: Slip Aweigh
Vessel Model: Prairie 29
Join Date: Oct 2013
Posts: 1,219
I have done bare bronze. By August itís barely recognizable as a prop. Looks more like a multi armed barnacle club. After trying many different ideas, The Velox is the best thing I have found that left the prop almost completely free of growth. A VERY small amount of slime. But only 3 small barnacles. And they fell off with just a light brush. The uncoated part was terrible. My through hulls are all relatively growth free (and ablative coated as well).
cappy208 is offline   Reply With Quote
Old 12-17-2017, 07:04 PM   #149
Guru
 
tadhana's Avatar
 
City: New England and Canada to Florida
Vessel Name: Tadhana
Vessel Model: Helmsman 38 Pilothouse
Join Date: Jul 2011
Posts: 596
Quote:
Originally Posted by Fletcher500 View Post
A couple questions for folks who have used this, or similar coatings:

There are various versions of this...Is this the correct stuff?
Ok to use on both the shaft and prop?
Are 1 to 2 cans enough to spray a prop and shaft?
One coat sufficient?
Drying time allow splash after a few hours?

Thanks, Fletch.
Looks to be right to me. 93% zinc. One can should be enough. one can does my gear about 3 haul outs with about 4 coats at each haulout. Several thin coats work best. It is by far the best to let it dry 8 hours before splash, but I have applied it as the travelift was rolling.
tadhana is offline   Reply With Quote
Old 12-18-2017, 08:59 AM   #150
Guru
 
Fletcher500's Avatar
 
City: San Diego
Vessel Model: Helmsman 4304
Join Date: May 2016
Posts: 1,691
Quote:
Originally Posted by tadhana View Post
Looks to be right to me. 93% zinc. One can should be enough. one can does my gear about 3 haul outs with about 4 coats at each haulout. Several thin coats work best. It is by far the best to let it dry 8 hours before splash, but I have applied it as the travelift was rolling.
Thanks Todd. This will be a quick haul, but if if there is time, I am hoping to get a few coats on.
Fletcher500 is offline   Reply With Quote
Old 12-18-2017, 10:57 AM   #151
Guru
 
Tom.B's Avatar
 
City: Cary, NC
Vessel Name: Skinny Dippin'
Vessel Model: Navigator 4200 Classic
Join Date: Jul 2009
Posts: 5,838
Opinions on this subject are all over the place. We just came down from a haul and we used the expensive version on galvanizing spray by Petit (directly on the prop). We were told by our diver to use 10 coats of the cheap stuff from Lowe's that you are linking to, but I just didn't trust it (for no particular reason). I followed the directions on the can and ended up with about five coats. One can did slightly over one coat on our two 28" props.

We don't know the results yet, but I will post them when we have them. TBH, part of our problem was lack of use in our long visit to Morehead City. We sat for three months in a high-growth environment and didn't know our diver wasn't servicing our account. Anyway, everyone we talk to about the subject agrees that using the boat (and we are a go-fast planing motoryacht) is the best preventive action we can take.
__________________
2000 Navigator 4200 Classic
(NOT a trawler)
Tom.B is offline   Reply With Quote
Old 12-18-2017, 11:24 AM   #152
Veteran Member
 
seabum's Avatar
 
City: Westerly, RI
Vessel Name: Magic Moment
Vessel Model: Mariner Orient 38 Euro
Join Date: Feb 2017
Posts: 60
I cannot seem to determine from all these assorted responses if this Zinc spray-on material can be used on the shafts and props both?

From other boating forums it sounds as if this spray zinc does a good job keeping the barnies away without breaking the boating bank, but still am not sure if I should only use it on the brass props or if I can also apply it to the struts and shafts.
seabum is offline   Reply With Quote
Old 12-18-2017, 11:48 AM   #153
Guru
 
Tom.B's Avatar
 
City: Cary, NC
Vessel Name: Skinny Dippin'
Vessel Model: Navigator 4200 Classic
Join Date: Jul 2009
Posts: 5,838
It can be put on any underwater metal. I only put it on props and nothing else. The props I wanted clean for placement and movement of anodes as needed. On the struts, rudders and strainers I just used regular bottom paint because stripping them back to bare metal would have been a huge PITA. :-)
__________________
2000 Navigator 4200 Classic
(NOT a trawler)
Tom.B is offline   Reply With Quote
Old 12-18-2017, 11:49 AM   #154
Guru
 
City: Full Time Cruising East Coast
Vessel Name: Meridian
Vessel Model: Krogen-42
Join Date: Aug 2011
Posts: 1,014
I just pulled after 12 months of cruising from FL to Great Lakes with no cleaning during that time. I had used Rust-oleum on the props, struts, and shafts. There were no barnacles. Click image for larger version

Name:	IMG_4527.jpg
Views:	110
Size:	123.2 KB
ID:	71341
__________________
-------------------------
Terry
Meridian
KK-42097
meridian is offline   Reply With Quote
Old 12-18-2017, 11:57 AM   #155
Guru
 
Fletcher500's Avatar
 
City: San Diego
Vessel Model: Helmsman 4304
Join Date: May 2016
Posts: 1,691
Quote:
Originally Posted by meridian View Post
I just pulled after 12 months of cruising from FL to Great Lakes with no cleaning during that time. I had used Rust-oleum on the props, struts, and shafts. There were no barnacles. Attachment 71341
Impressive. How many coats did you use?

Side Note: I realize there are a lot of variables involved, usage being a key one along with the area, season, diver cleaning skills, etc. There are a lot of products out there, some being much more $ than others. I am starting to wonder how much more effective they are than a can of $10 spray paint based on some of these reports.
Fletcher500 is offline   Reply With Quote
Old 12-18-2017, 12:23 PM   #156
Guru
 
Heron's Avatar
 
City: Cypress Landing Marina (NC)
Vessel Name: Heron (2)
Vessel Model: '88 Cape Dory 28 Flybridge #115
Join Date: Nov 2014
Posts: 1,305
1.5 years on the Rustoleum stuff and still barnacle free. Shot everything but the zinc. My mistake was not doing the Bow thruster blades and transmission....Which is now very encrusted and barely thrusts...Lesson learned!
__________________
Steve
Heron is offline   Reply With Quote
Old 12-18-2017, 01:50 PM   #157
Guru
 
Simi 60's Avatar
 
City: Queensland
Vessel Model: Milkraft 60 converted timber prawn trawler
Join Date: Jul 2016
Posts: 4,157
91% in oz for the dymark product available at the big hardware.
https://www.bunnings.com.au/dy-mark-...c-gal_p1580554

Wonder how it would go on the aluminium dinghy and outboard?
Is it likely to have dissimilar metal issues?

Add: I have large zinc anodes on the dinghy and o/b now so I guess not
Simi 60 is offline   Reply With Quote
Old 12-18-2017, 01:58 PM   #158
Guru
 
City: Full Time Cruising East Coast
Vessel Name: Meridian
Vessel Model: Krogen-42
Join Date: Aug 2011
Posts: 1,014
There was a minimum of 3 coats could have been twice as many
__________________
-------------------------
Terry
Meridian
KK-42097
meridian is offline   Reply With Quote
Old 12-22-2017, 10:12 PM   #159
Guru
 
Simi 60's Avatar
 
City: Queensland
Vessel Model: Milkraft 60 converted timber prawn trawler
Join Date: Jul 2016
Posts: 4,157
Quote:
Originally Posted by Simi 60 View Post
91% in oz for the dymark product available at the big hardware.
https://www.bunnings.com.au/dy-mark-...c-gal_p1580554

Wonder how it would go on the aluminium dinghy and outboard?
Is it likely to have dissimilar metal issues?

Add: I have large zinc anodes on the dinghy and o/b now so I guess not
Just looked at the 2 cans I have onboard.
Big numbers on the front say 98.5% pure zinc

I linked to the wrong product.
The higher zinc content is cheaper
https://www.bunnings.com.au/dy-mark-...-zinc_p1580764
Simi 60 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Trawler Port Captains
Port Captains are TF volunteers who can serve as local guides or assist with local arrangements and information. Search below to locate Port Captains near your destination. To learn more about this program read here: TF Port Captain Program





All times are GMT -5. The time now is 11:59 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2022, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012