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Go Back   SailNet Community > On Board > Gear & Maintenance
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  #41  
Old 11-10-2008
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Quote:
Originally Posted by GBurton View Post
Can I see some of your pics of polysulphide ruining deadlights and plastic? I'm really interested

http://www.sailnet.com/photogallery/.../ppuser/139447
In case you can't read what's been written about polysulfides the chemicals leach the plasticizers from plastics over time and lead to premature failure and brittle plastics!! Your experiment only proves that you did not read what has been written and that you did not give it enough time to effectivly test the product for what damage is said to occur with certain plastics.

Your experiment displays nothing more than a polysulfide sitting on the surface for a short time.

Again, you can ignore Practical Sailor, Don Casey, BoatLife and manufacturers such as Beckson if you want.

I will not continue to argue with someone who will never admit they have made a judgement error even when faced with solid evidence against them.

The evidence in boating industry, and from the manufacturers themselves should be enough for any sane individual but not good old "red box Burton"..

Use polysulfides (Life Caulk & 3M 101) carefully with plastics as they may not be compatible with some of them and it can lead to leaching of the plasticizers causing premature failure. When in doubt pick up the phone and call a manufacturer. I did this with Beckson and got an ear full about the damaging qualities of polysulfides with their portlights.

In case what Don Casey and Boat Life, the manufacturer of Life Caulk, says still isn't enough here's what Practical Sailor says:

Quote:
Originally Posted by Practial Sailor
Polysulfides will adhere to metal, glass, fiberglass, wood, or any combination of these. They should not be used for cementing PVC, acrylic (Plexiglas), ABS, or Lexan plastics, because the solvents in polysulfides can leach the plasticizer from these plastics and cause them to harden and crack.
Silicone sealants are usually recommended by the
manufacturers of products made from these plastics. The higher-quality plastic fittings made from Delrin, nylon, glass-reinforced nylon (Marelon), or glass-filled epoxy are not affected by polysulfide sealants.

Just as I've said before you need to send your test photos that are "as good as any magazine" to Boat Life, Don Casey and Practical Sailor and take this apparent "gross judgement error" against polysulfides up with them..
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Last edited by Maine Sail; 11-10-2008 at 10:48 PM.
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  #42  
Old 11-10-2008
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Well, you did ask for evidence

Shall I post a picture of me anchoring with a Bruce anchor?



Quote:
Originally Posted by Maine Sail View Post
In case you can't read what's been written about polysulfides the chemicals leach the plasticizers from plastics over time and lead to premature failure and brittle plastics!! Your experiment only proves that you did not read what has been written and that you did not give it enough time to effectivly test the product for what damage is said to occur with certain plastics.

Your experiment displays nothing more than a polysulfide sitting on the surface for a short time.

Again, you can ignore Practical Sailor, Don Casey, BoatLife and manufacturers such as Beckson if you want.

I will not continue to argue with someone who will never admit they have made a judgement error even when faced with solid evidence against them.

The evidence in boating industry, and from the manufacturers themselves should be enough for any sane individual but not good old "red box Burton"..

Use polysulfides (Life Caulk & 3M 101) carefully with plastics as they may not be compatible with some of them and it can lead to leaching of the plasticizers causing premature failure. When in doubt pick up the phone and call a manufacturer. I did this with Beckson and got an ear full about the damaging qualities of polysulfides with their portlights.

In case what Don Casey and Boat Life, the manufacturer of Life Caulk, says still isn't enough here's what Practical Sailor says:



Just as I've said before you need to send your test photos that are "as good as any magazine" to Boat Life, Don Casey and Practical Sailor and take this apparent "gross judgement error" against polysulfides up with them..
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  #43  
Old 11-10-2008
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Quote:
Originally Posted by GBurton View Post
Shall I post a picture of me anchoring with a Bruce anchor?

No but here's a shot of my old Bruce from qute a few years ago..

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  #44  
Old 11-25-2008
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Rocna Anchors.... our experience

I had posted this on another thread, but thought it was more appropriate here.





I have used a Rocna for 2 seasons now with over 60 nights on the hook. This past summer we were in Collins Inlet at the north end of Georgian Bay ( Lake Huron). Collins Inlet is approximately 6 – 10 miles long with rocks 50 – 60 ft. high on both sides and at times is only 150 ft. wide. Towards the Eastern end is a lake perpendicular to the Inlet and is a couple of miles long. We were watching the sky getting very dark to the north and since we were heading East and the winds were from the west I was not too concerned as the storm seemed to be staying above us. As we were passing through the lake area, a few drops started to fall and that “little voice inside” said maybe we should drop the hook and wait to see if anything materialized.

I pulled into a small cove off the main channel just as the rain started and we quickly dropped the anchor and started zipping up the enclosure. I didn’t bother to properly set the anchor ( it was only supposed to be a little rain right ??? ) and since I did not bother to scope out the cove for depths etc. and only let out 100 ft. in 24 ft. of water.

No sooner than we were buttoned up the rain and winds hit us full force. I scrambled up into the cockpit (luckily we had put up the enclosure ) to check the instruments and GPS to make sure we were not dragging into the rocks that I knew were close by. The winds were pushing 40 knots and gusted to 45 – 47 knots several times and actually pushed the boat into a 20 deg. heel for several anxious minutes with each gust. Top speed recorded that I checked later was 52.7 knots. The strong winds lasted up to an hour ( I can’t recall time as I was a little anxious at the time ) and for a period of time we were blasted with hail. After the storm subsided, we went ashore to let the dog do her thing and found several trees downed directly behind us.

Throughout the whole ordeal, our Rocna anchor did not budge and that was not properly set initillly, swung 135 deg. and barely 4 to 1 scope . When the most intense part of the storm hit us we swung 135 deg. from the position where I had initially dropped the anchor. The next day when we went to leave the anchor was set so hard that I had to use considerable power from the engine to break it free from the mud and clay bottom.

Can't really say which is better as this is the only anchor I've owned. What I do know is it saved our butts from what could have been a very different outcome if we had dragged anchor and ended up on the rocks on shore.
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  #45  
Old 11-25-2008
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ScottBr-

Gotta love the way a Rocna sets and holds...
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  #46  
Old 11-25-2008
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Quote:
Originally Posted by sailingdog View Post
ScottBr-

Gotta love the way a Rocna sets and holds...

No kidding !!! Normally I'll back it down with a fair amount of throttle and be more cautious about where I'm setting and the surroundings. I've even tried it up to 3/4 throttle just for fun and had it hold fast. We had gone through another t-storm late night a few weekends prior with winds to 35 knots and could feel the boat pulling on the anchor and didn't budge. Another sailboat in the anchorage passed between us and a powerboat going sideways as he dragged his anchor. Don't know what it was or how he had set but he missed us by only a few feet.

In Collins Inlet I was in too much of hurry and was thinking it would be temporary while we sat out some rain. Just goes to show you should always be prepared for the worst. Wish I had taken more pictures during the storm, but I was too busy / worried about the rocks behind us and a small powerboat I noticed when we pulled in to drop anchor.
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  #47  
Old 11-25-2008
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Craig,

Your posts show up in almost every discussion on anchors and anchoring promoting the Rocna Anchor. While your expertise is greatly appreciated, I can only assume that Rocna is benefitting from the exposure.

It seems to me in these times, when it is so necessary for all of our survivals that one hand wash the other, it becomes even more critical that you support Sailnet as they have been supporting Rocna by providing this exposure.

At the very least, it seems to me that minimally Rocna should be taking out a small Sailnet ad which allows Rocna to show its appreciation and to help support this valuable resource. It offers Rocna a chance to provide an easy link to its website for those Sailnet members who are interested in purchasing a Rocna. Supporting Sailnet by placing an ad could only help Rocna further develop good will.

By the same token, with all due respect, at least to me, as much as your posts promoting the Rocna appear on Sailnet, it really hurts my sense of the legitimacy of Rocna that they have not placed an ad on Sailnet, making Rocna seem a bit stingy and making me wonder whether that seemingly self-serving attitude would filter in other dealings I might have with them as a company.

In other words, I suggest that its time to step up to the plate and take out a Sailnet ad.

Respectfully,
Jeff
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IIRC, the Rocna anchor has appeared in a AdSense Google ad several times.. but I don't know if Sailnet has direct ad placement as well. If so, Craig should spring for one of those as well IMHO.
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Old 11-26-2008
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Craig, we selected Rocna as a safety gear for our passage from US to South America. We're still waiting the official hurricane season to end, to start the trip. I was just amazed on how little use achors have at Charleston bay. Guys told me most american boats go from marina to marina, and barely use their hook; same concept I found a hard time to find a sailboat with a dingy on it. Anyway, we sleep on hook 100% of time, meaning 8- 10 anchoring per month during summer plus another 4-6 during winter. We probably anchor 80-120 times per year and majority boats here are Bruce model (due to botton) but I red Rocna against Bruce test and made decision based on your technical data, but once we bring the boat .... let's see how it goes with holding Nave Rara on brisky nights. And don't forget those little animals (read kids) riding, escalating, playing with the anchor chain all day long. Another point, the Rocna design is absolutely more beautiful than my old Bruce, so we expect a good look at marina too .....





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