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**Mantus Anchors** · 06-08-2012, 07:30

Dear members of the Cruisers Forum, Mantus Anchors is offering 25% off all our anchors for members of this forum

This offer is good for one month. To Claim the coupon just cut and paste the promotional code below when prompted in the check out cart.
Promotional Code: mantusrules

micah719 · 06-08-2012, 10:06

Which 25% of the anchor are you cutting off?

Hahahaha.......ahaha.......ha.......er.....

Oh!....yes, they DO bury and hold well.
Can someone call a doctor, please?

teneicm · 07-08-2012, 07:07

Hey Greg- Interesting offer, but as a guy in the market for a next-gen anchor, the one aspect that gives me pause about the design is the bolt on shank. I know you say that each bolt "has sufficient strength" to take all forces, but does this take into consideration leverage forces if the shank is being side loaded or twisted in a direction not aligned with normal load? I would really love to see the results of some destructive tests showing side loading and top loading to failure to see what gives first- bolts or the steel and at what forces. Any chance of doing these?

Cheers- Matt

red.sky · 07-08-2012, 21:57

teneicm,
Hi this is Deneen with Mantus.
Analysis was run using loads in-plane with arm & out-of-plane to arm (twist).
For 1/2 bolts, tensile strength is ~ 18,000lbs & shear strength is ~ 10,000 lbs. The bolts will be in both tension & shear simultaneously. appropriate interaction equations were used. High positive margins exist for the bolts using the same load that will break a 3/8" chain.
Keep in mind for a "twist" load, the anchor itself will displace (reducing load) & realign itself in-plane. So you can't really develop a "high" side load unless the anchor is jammed in rocks or something similar. Nonetheless this failure was still assessed.
The joint is "bearing critical" meaning the shank holes will yield (thereby allowing loads to redistribute to lesser loaded bolts) before any single bolt fails.
hope this helps.

**Celestialsailor** · 08-08-2012, 00:56

I went to your site. Seems a few features on the site do not work but I did enjoy the video. Seems a little bias. Perhaps if an independent study was done by practical sailor, it may add verification to your claims. Thank you for the discount. I hope you do well with your product.

**cat man do** · 09-08-2012, 21:15

Oh no, according to the video my Manson supreme and Delta are worthless piece's of sh1t, what shall I do.

**Celestialsailor** · 09-08-2012, 21:20

Like I said...an independent study would be nice.

**Mantus Anchors** · 09-08-2012, 21:39

Quote:

Originally Posted by cat man do

Oh no, according to the video my Manson supreme and Delta are worthless piece's of sh1t, what shall I do.

Worthless, no! Remember, we tested in a very challenging bottom. But if you want the most reliable set..... Mantus does set better than any other anchor.

Please check this Sailnet Report:

Maine Sail
Senior Member

Join Date: Jan 2003
Location: Maine Coast
Posts: 3,897
Rep Power: 13

Re: Another "Next Generation" anchor enters the market...
Mantus Initial Observations:

OK so only 8 anchorings on the Mantus over the weekend. The big problem for us is that our Rocna and Manson Supreme have perfect track records over hundreds & hundreds of sets.

The only time our Rocna failed to set was in waist high eel grass when it pulled up a root ball the size of Milwaukee...

So how do I put the Mantus through the ringer and see what she's made of...?? I know, we will only set it between 2:1 and 2.5:1 scope. So over 8 sets that is what we did.

On the first set, my buddy Jay, whom we've sailed with for 20+ years, was setting the hook. I asked him to play it out to 2:1 and snub it. He did, and while the boat was moving backwards at a pretty good clip. The anchor set not just quickly but instantaneously. We knew it was set because the bow of our 36' boat dipped a few inches as the boat was stopped dead in its tracks. I then, without waiting for it to "settle" into the bottom as you need to do with many old school anchors, backed down at full reverse throttle and held it there for a good while. On our boat this is about 600 - 800 pounds of reverse thrust. The anchor would not budge even in some very soft gooey mud. This is a 44HP four cylinder diesel spinning a three blade prop with the anchor at roughly 2:1 scope and wide open reverse throttle...

Over the weekend we repeated the 2:1 +/- sets and each time remained anchored at 2:1 +/-. The anchor set, as my buddy Jay puts it, "Dude this thing is like a magnet for the bottom."....

Having come from a Rocna this type of setting abuse, I felt, was going to be the only way to note any performance differences.

There was a noticeable difference in the speed the anchors sets at compared to the Rocna and Manson Supreme. This is not to say the Manson and Rocna do not set fast, they do, and always set within inches, but the Mantus feels as though it sets as soon as it touches down and immediately.

At this point it is too early to say whether this is luck or performance but if I had to shoot from the hip I would say it is performance. It will remain on my bow for our cruise Downeast and I will give it some more abuse.

So I would have to say that as of now my gut feeling is that this is an "evolutionary" improvement in setting over the Manson Supreme and the Rocna but not a "revolutionary" improvement. Evolutionary is good especially when going up against the tremendous performance of a Rocna or Manson Supreme

The performance was good enough this weekend that for now it is replacing my non-Chinese Rocna as our primary bow anchor..

As we were leaving our anchoring spot Sunday morning my buddy Jay had pre-shortened scope to about 1.1:1 and we then had breakfast. This is a trick we learned with the Manson Supreme an Rocna and it helps to gently un-set the anchor, as I bury them pretty well each time we "power-set" it. When we went to leave the anchor was still well set so I throttled forward and Jay felt it un-set. He then began to bring up the chain and the damn thing re-set, at about 1.1:1 almost yanking him off the bow.......

So far so good but I do still want to gain more experience with it before declaring it our new primary anchor......

**cat man do** · 09-08-2012, 22:11

or should that be

**Celestialsailor** · 10-08-2012, 00:02

Yup...Sounds like a poorly written script. I would be able to believe claims done by Practical sailor or even West Marine. But Johnny and Jay...no. I'll be complimenting my Bruce next year before heading off. So far Manson Supreme is at the top of the list. Maybe by then there will be an independent study done.

**chef2sail** · 10-08-2012, 00:11

Mainesail is no Johnny or Jay. Especially when it comes to testing anchors. Go to SailNet and read his methodical test a few years ago. It is everybit as complete and inclusive of a Practical Sailor test. We have a non Chinese Rocna which has been the bet all round anchor I have ever had and quickest setting. The new anchor Msy be an evolution as was styed

Dave

**Celestialsailor** · 10-08-2012, 00:23

It may very well be a good anchor. I do not have data saying its not. But...the sailnet post is hardly a good experiment with repeatable data done at the same time, in the same place, under the same controlled conditions. Data is data with observations and conclusions.

**Mantus Anchors** · 10-08-2012, 03:15

Quote:

Originally Posted by Celestialsailor

Like I said...an independent study would be nice.

You are right an independent assessment would be "nice!" However we have no control over these tests by the very fact that they are independent. We are always ready to submit our baby to anyone who wants to play with it

.
I thought you and other readers might be interested in the thread, since it has reports of people using Mantus. The same is true of our testimonials on the webpage. Just take it for what its worth. In time we will make a believer out of you

Greg

**Celestialsailor** · 10-08-2012, 08:45

Thank Greg...Like I said, I am in the market this next year and will keep my ear on the ground for upcoming input from others and hopefully a controlled test with other manufacturers. The other manufacturer that has shot themselves in the foot by switching to inferior materials is off the list for me.
It's been awhile since I've seen any tests. I think we're due. Good luck on your business venture. I truly hope it is the silver bullet of anchors.

cwyckham · 10-08-2012, 10:10

Quote:

Originally Posted by red.sky

teneicm,
Hi this is Deneen with Mantus.
Analysis was run using loads in-plane with arm & out-of-plane to arm (twist).
For 1/2 bolts, tensile strength is ~ 18,000lbs & shear strength is ~ 10,000 lbs. The bolts will be in both tension & shear simultaneously. appropriate interaction equations were used. High positive margins exist for the bolts using the same load that will break a 3/8" chain.
Keep in mind for a "twist" load, the anchor itself will displace (reducing load) & realign itself in-plane. So you can't really develop a "high" side load unless the anchor is jammed in rocks or something similar. Nonetheless this failure was still assessed.
The joint is "bearing critical" meaning the shank holes will yield (thereby allowing loads to redistribute to lesser loaded bolts) before any single bolt fails.
hope this helps.

Sounds like a decent assessment.

Remember: airplane wings are bolted on. Bolts are strong and consistent add long as they are designed and installed correctly