Nomad Willy
Guru
A real world reversal will suffice.
Anchor discussion on TF was ever thus.I am beginning to think that no matter what I do, you will not be satisfied.
Steve
A real world reversal will suffice.
Steve,
OK good .. you deliver.
I'm beginning to think the problem is impaction on the flukes when the anchor flips. Yes, I agree. The substrate impacted on the upper surface of the flukes is suddenly on the bottom when the anchor flips. Yes, I agree. And w the 3 knot speed the flukes are held up long enough for the speed to snap back and then the lift from the fwd motion keep them up above the bottom preventing the flukes from catching the bottom and resetting. Yes, except even when the anchor is allowed to stop, the seabed will sometimes not allow the shank pass between the impacted flukes and therefore will not articulate. Of course that requires a near perfect 180 degree reversal. Yes, I agree. I have been doing dozens and dozens of "re-set" tests and IF the chain "whizzes by" (indicating a near perfect 180 degree reversal) the anchor flips almost every time. This "back flip" occurs no matter which anchor I am testing and it is my belief that boat speed has little to do with it. It is all about that "perfect" 180 degree re-set. Perhaps the impaction factor would be far less at your other test site .. or nonexistant. Here is a test of the Fortress at the "other" site (sand and gravel). Note that at the 3:40 mark, a perfectly sized rock is jammed between the flukes.
Oh well it's fly stuff as it's probably not going to happen to the vast majority of us but you've shown that it does happen. The frequency of this "Perfect Storm" type re-set could be as infrequent as automobile head-on collisions. I don't know about you, but I wear my seat-belt just in case.
I made two sets w my mod Supreme sans roll bar and w fence on top of the shank and had two very excellent sets. Held well but I've probably got some barnacles as rpm was down. I'm glad to hear that your modified anchor gave some positive results. Getting the prop cleaned Monday.
............Perhaps the question needs to be asked .. did Fortress design their anchor to do 3+ knot reversals. I do not need to ask this question Does any manufacturer. I do not need to ask this question Or perhaps the question dos'nt need asking because no anchor manufacturer does. The question does not need asking because the mindset of the inventor is not a factor as long as the anchor works. Maybe the best anchor in the world was just a good guess or the inventor just got lucky. I do not care how the anchor was derived. It either works or it doesn't Perhaps anchors are designed to be the best that they can be and their limits fall where they will. Obviously, an anchor manufacturer strives for the best and will always wish the anchor was better.
Again a test is good if it reveals usable information. I am sorry that you do not find my 180 degree re-set information usable. You are welcome to your opinion. We will have to agree to disagree. But the scenario you've created .. anchor, boat size, anchor size, bottom and setting dynamics is not likely to be duplicated. Never, have I or anyone else said that my 180 degree reset test was a likely real world scenario. It is in fact a rather unlikely scenario. But when it does happen, having an anchor that will reliably re-set after being pulled from the sea-bed is desirable - to me at least. So not very usable for specific anchor buying information but when compared to the many other anchors tested (that is exactly what I am doing.) it reveals lots and lots of trends and general anchor behavior. This is not only very revealing but very useful for buying anchors and also greatly adding to one's knowledge of how to deploy anchors. This is confusing. You say the info is "not very usable" then you say the info is "very usable" ??
So very valid useful Steve. But often not ideally matched in the many variables. I suppose there are a few people out in the world that need to be told that there are a vast number of variables in anchoring. Variables that cannot possibly all be re-created in a test environment (I would need to conduct thousands or perhaps tens of thousands of tests). I guess I should not assume that everyone would be so astute.
Re the validity of the Danforth type there is only one anchor I always have on my boat .. a 13lb Danforth anchor.
Hole anchor, Batman! Good sleuthing
Hey, I was just acknowledging the mans determined curiosity streak which impels him to keep experimenting until he finds an answer, while the rest of us (if we do ponder such things) usually give it only a passing thought whist scratching our asses.
Sorry, that was an inadvertent post. Must have fallen asleep reading TF.
Nick Shaw of Ground Tackle Marine, offered to exchange my Super Sarca #5 for a #6. This is the perfect size for Panope.
Rather than another boring test of an anchor performing perfectly, I tried to make it fail by blocking the fluke slots (these slots perform the function preventing mud from sticking).
Alas, the test did not go as I had presumed it would............
Steve