Neeves
Well-Known Member
Why would anyone buy any anchor on the basis of price, are there not, just, one or two other minor(?) attributes that determine a purchase decision?
KnoxAnchor - has anyone any experience of using one?
- Thread starter Neeves
- Start date
Why would anyone buy any anchor on the basis of price, are there not, just, one or two other minor(?) attributes that determine a purchase decision?
D
Deleted member 36384
Guest
Price is important because other products that offer similar functionality and retail at a lower cost may be good enough. In my case, I was very happy with the technical abilities of Knox's design, I also try to support support local/British industries and importantly I can afford it. I was also in the market to change out my two CQRs (60 lb and 40 lb) that came with the boat. The 40 lb CQR kedge has been replaced with a Fortress bought second hand at a very affordable price compared to a new one. Thus old technology has now been replaced with lighter, stronger, better performing technology. I feel though that Knox will have to look at their price structure if they want to sell more anchors.
Neeves
Well-Known Member
I must apologise, I could not quite get my head around the idea that anchor choice was based on the volume of extra beer that could be drunk (it seemed a choice between affording not much beer, over a week, month?, and an anchor, or - no beer (for a week, month) and another anchor - and both anchors will, hopefully, last for years).
nimbusgb
Well-Known Member
For a long while everyone worshipped at the altar of this tremendous innovation, the Rocna. It was the best. Then they had some manufacturing issues and everyone ran for the hills in spite of Rocna doing their best to alay fears and redress anyone still unhappy.
I can obtain a top of the line anchor with proven design, performance and first hand evidence from friends caught in the Nidri storm, the area I sail to replace my large, heavy, only dragged once, CQR for less that the new kid on the block ..... ..... Ummm not just price that's going in to it. Price it at the same level as a Rocna and I may yet consider it, knock £100 off and I'll risk it, even report back on anchoring in med sand, rock and weed. I may even seek out some notoriously gusty anchorages to do so.
£50 will buy me another 10m of 10mm chain, giving me a total of 95m that means the ability to anchor very safely in water 2m deeper thus opening up more area when faced with a crowded beach line or alternatively running a 10 or 15:1 scope in a serious blow. The £50 doesn't need to be spent on beer tokens.
I can obtain a top of the line anchor with proven design, performance and first hand evidence from friends caught in the Nidri storm, the area I sail to replace my large, heavy, only dragged once, CQR for less that the new kid on the block ..... ..... Ummm not just price that's going in to it. Price it at the same level as a Rocna and I may yet consider it, knock £100 off and I'll risk it, even report back on anchoring in med sand, rock and weed. I may even seek out some notoriously gusty anchorages to do so.
£50 will buy me another 10m of 10mm chain, giving me a total of 95m that means the ability to anchor very safely in water 2m deeper thus opening up more area when faced with a crowded beach line or alternatively running a 10 or 15:1 scope in a serious blow. The £50 doesn't need to be spent on beer tokens.
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Neeves
Well-Known Member
No problems, nimbusgb - I do confess I was unsure of the value of a beer token anyway! Frankly I'd not bother with the extra 10m of chain (I'd, personally, always worry about the link between old and new) and I'm not sure you will really notice the difference - I'd just get some decent snubbers, maybe spend the savings (still supporting Scots industry) on a decent Malt?
Jonathan
Jonathan
nimbusgb
Well-Known Member
Replacing chain at the same time so I order 85m or 95m in a single run, no join.
A good bottle of malt is a good idea anyway!
oldbilbo
...
Oi! We're not all abstemious presbyterian antipodeans on 'ere. For many of us the primary reason for having an anchor in the first place is so we can go ashore and have a worry-free beer in the second place.... and if we get the tides right, in the third place, too.
Neeves
Well-Known Member
I am sure, prior to the citizenship ceremony, it was advised that 'abstemious' and 'antipodean' in the same sentence was ungrammatical (presbyterian or not). I'm sure I signed something about upholding values and standards. But with the forthcoming usual harsh Sydney winter and all the discomfort it will entail we'll anchor, stay (securely) on board and sit out late in the evening, in the cockpit in the company of a decent malt, denying any pleasure to be attributed to local, flavourless, frozen beer.
oldbilbo
...
Amen to that!
D
Deleted member 36384
Guest
I finally got to use my 18 kg Knox anchor yesterday. I anchored at Kames Bay, north anchorage spot, Isle of Bute, in 6m, bottom is indicated as sand but was more of a black silt. With 30m deployed I reversed back at low RPM with the 84 HP Perkins 4236 (I think it is only 60HP continuous at the shaft); 22"x14", 2 blade propellor. The anchor dug immediately and the yacht stopped, increased to 1000 rpm and the yacht moved back a touch (a meter or so as the transit I was using just moved off) and then stopped, increased to 1800 rpm and she remained stationary. I didn't take the engine to full chat as the cavitation noise is quite dreadful. In the morning when we recovered the anchor (by hand) it took a bit of effort to break out at 8m scope. I put the chain in the gypsy and waited a few minutes and then tried again and up the anchor came with a big dollop of black silt stuck to the fluke. To be fair, most anchors would probably work here as it is good holding.
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Neeves
Well-Known Member
Good detail, it would be useful if once you have a few nights under your keel if you could do an update. But sounds good and a really decent image!
Jonathan
Jonathan
Uricanejack
Well-Known Member
What an ugly hunk of grey metal.
I want one of those nice shiny stainless ones to hang of the prow. Polished up by the crew so I can see my face in it.
I certainly don't intend to drop it on a muddy bottom and get it all dirty or covered in weed.
I want one of those nice shiny stainless ones to hang of the prow. Polished up by the crew so I can see my face in it.
I certainly don't intend to drop it on a muddy bottom and get it all dirty or covered in weed.
Uricanejack
Well-Known Member
What an ugly hunk of grey metal.
I want one of those nice shiny stainless ones to hang of the prow. Polished up by the crew so I can see my face in it.
I certainly don't intend to drop it on a muddy bottom and get it all dirty or covered in weed.
I want one of those nice shiny stainless ones to hang of the prow. Polished up by the crew so I can see my face in it.
I certainly don't intend to drop it on a muddy bottom and get it all dirty or covered in weed.
Neeves
Well-Known Member
What an ugly hunk of grey metal.
I want one of those nice shiny stainless ones to hang of the prow. Polished up by the crew so I can see my face in it.
I certainly don't intend to drop it on a muddy bottom and get it all dirty or covered in weed.
To fit the part you will also need invest in a blazer with gilt buttons and coat of arms on the breast pocket, long, neatly pressed white trousers, a trophy crew member (as attractive and possibly as reliable as your shiny new anchor) and a hankering for pink gin. Without these essential extras you will simply look gauche. You might also need a spiffy new yacht (if you do not have that already).
Jonathan
Pavalijo
Well-Known Member
I read here that Knox have made a modification by joining the two flukes at the tip to prevent damage by rock? I can see that the open slot may have assisted penetration/setting, but I didn't see any explanation as to what the resultant slot in the centre of the flukes achieves when the front end of the slot is closed. Any ideas?
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sarabande
Well-Known Member
I suspect the "two halves" design comes from an understandable desire to optimise the cutting area of the very expensive whole sheet steel.
Joining the tip makes mechanical sense in that it makes the individual blades more resistant to twisting. It might be argued that the slot then allows sand/mud/small stones to fall through as the anchor sets, and fill up the back of the anchor blade. Without seeing that in real life, I cannot say that with certainty though
The slot would, however, make it easier for mud and sand to self-clean as you lift the anchor.
Joining the tip makes mechanical sense in that it makes the individual blades more resistant to twisting. It might be argued that the slot then allows sand/mud/small stones to fall through as the anchor sets, and fill up the back of the anchor blade. Without seeing that in real life, I cannot say that with certainty though
The slot would, however, make it easier for mud and sand to self-clean as you lift the anchor.
D
Deleted member 36384
Guest
The reason is quoted below, no need to guess. He commented on the bridging of the tip to stop the chain getting fouled as not compromising the penetrating capability of the flukes, so perhaps it's the gap that is important as opposed to the chisel tips. Mine came up with a big lump of gloop so the self cleaning idea is not supported in my case. There is a substantial stiffener section welded to the underside of the flukes.
http://www.knoxanchors.com/home/key-features/
http://www.knoxanchors.com/home/key-features/
MM5AHO
Well-Known Member
I'm interested in this anchor, but my galvanizing background leads me to be a little concerned about mixing high strength steels and galvanizing.
The standard form of preparation for hot dip galvanizing involved hydrocholric acid, and HCl can cause hydrogen embrittlement in HT steels.
I wonder what steps are taken to prevent having a brittle shank on these anchors?
I'm certainly in the market for something better than my existing bottom raker (CQR). I've dragged that old lump many metres in stronger winds round the west coast!
The standard form of preparation for hot dip galvanizing involved hydrocholric acid, and HCl can cause hydrogen embrittlement in HT steels.
I wonder what steps are taken to prevent having a brittle shank on these anchors?
I'm certainly in the market for something better than my existing bottom raker (CQR). I've dragged that old lump many metres in stronger winds round the west coast!
arranite
New Member
How are people getting on with the Knox? We hope to change our primary and kedge for next season, have my eye on a Knox and a Mantus, maybe both?
We did borrow a 9kg Knox from a friend and have tried it in sand with 40m 8mm chain in 7-10m depth, absolutely no poblem. Easy to set, although our delta was easy in the same spot. We set it and put out 35m chain then tried to break it free by driving over it and pulling outwards in a large full throttle circle many time, it stayed firm and we couldnt break free. The boat is 28' and 5ton and we left her alone for a couple of days in settled weather on this anchor, last day the wind picked up to 15-18knts onshore and our little yacht was sitting in 3-4 foot waves for a few hours and the Knox was fine. It is a reasuring anchor, easy to set and does appear to hold well. It doesnt sit well on our bow roller but is nice and easy to handle.
It seems like ther fluke surface area is almost twice that of the Manus for the same weight and I wonder how well it would hold in hard surfaces where the Mantus will dig in easily? This must be where the high effiency comes from, big surface area for the weight.
I would like to see a testing of these two anchors, does anyone have a mantus?
We did borrow a 9kg Knox from a friend and have tried it in sand with 40m 8mm chain in 7-10m depth, absolutely no poblem. Easy to set, although our delta was easy in the same spot. We set it and put out 35m chain then tried to break it free by driving over it and pulling outwards in a large full throttle circle many time, it stayed firm and we couldnt break free. The boat is 28' and 5ton and we left her alone for a couple of days in settled weather on this anchor, last day the wind picked up to 15-18knts onshore and our little yacht was sitting in 3-4 foot waves for a few hours and the Knox was fine. It is a reasuring anchor, easy to set and does appear to hold well. It doesnt sit well on our bow roller but is nice and easy to handle.
It seems like ther fluke surface area is almost twice that of the Manus for the same weight and I wonder how well it would hold in hard surfaces where the Mantus will dig in easily? This must be where the high effiency comes from, big surface area for the weight.
I would like to see a testing of these two anchors, does anyone have a mantus?
noelex
Well-Known Member
Thanks for the report. It looks like a promising anchor.
I think you might have confused the fluke area for the anchors looking at kg for one and Lbs for the other. The Mantus blade area appears bigger from the specs by about 25%
Mantus have sent me an anchor at no charge and I have been testing it over the last five months. It has been performing very well, so far even a bit better than the Rocna. I have unfortunately no experience with the Knox.
This is a photo of its set where I am anchored at the moment. This is a typical excellent performance:
I think you might have confused the fluke area for the anchors looking at kg for one and Lbs for the other. The Mantus blade area appears bigger from the specs by about 25%
Mantus have sent me an anchor at no charge and I have been testing it over the last five months. It has been performing very well, so far even a bit better than the Rocna. I have unfortunately no experience with the Knox.
This is a photo of its set where I am anchored at the moment. This is a typical excellent performance:
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