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Old 09-02-2011, 08:57 PM   #1
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Lifting eyes

I've seen a few pics on here about some of the high quality lifting eyes and the welding polsihing etc etc but I have to be honest, these are the best quality I have seen, the pictures dont do them justice as taken with my phone, if you look at them in the flesh you would think they are machined and polished all from a stainless billet!
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Old 09-02-2011, 09:06 PM   #2
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where can i get sum and how much
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Old 09-02-2011, 09:21 PM   #3
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where can i get sum and how much
Funny thing that,just what i want aswell.Wot have you got for the front?Lookin for something similar to whats on the top of Mr.Fullers dash on Leviathan,Dan,do you make them?
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Old 09-02-2011, 09:26 PM   #4
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Quote:
Originally Posted by dowdy View Post
Funny thing that,just what i want aswell.Wot have you got for the front?Lookin for something similar to whats on the top of Mr.Fullers dash on Leviathan,Dan,do you make them?
Hi, tbh I dont know what on the front of his dash. If you can get me a pic or a link I'll take a look.
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Old 09-02-2011, 09:39 PM   #5
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Quote:
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Funny thing that,just what i want aswell.Wot have you got for the front?Lookin for something similar to whats on the top of Mr.Fullers dash on Leviathan,Dan,do you make them?
Bear in mind there's some hefty structures in place to be able to lift from atop the dash. no lifting force at all is taken by the dash top itself. it all goes into the vertical structure below via bracketry.
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Old 09-02-2011, 09:44 PM   #6
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Hi, tbh I dont know what on the front of his dash. If you can get me a pic or a link I'll take a look.
cheers
Dan
Looks about a 6inch x 1/8inch diameter plate with 1/2inch round tube rolled to 2inch radius,would imagine bottom 2inches are threaded as it shoes a locking nut on top,rest a thro deck fitting,another nut and washer underneath no doubt.Want a pair of above plus a pair of the ones you just posted,p.m.price mate
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Old 09-02-2011, 09:53 PM   #7
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Quote:
Originally Posted by Jon Fuller View Post
Bear in mind there's some hefty structures in place to be able to lift from atop the dash. no lifting force at all is taken by the dash top itself. it all goes into the vertical structure below via bracketry.
Mine are going thro the deck,just in front of the windscreen,already moulded in a 6inch diameter pad on the plug to make it more prounounced lookin,same thing with 6 pop up cleats (ovaloids) if you know what i mean.Going to glass in a spreader under the deck,which in turn will be glassed to the cabin bulkhead,to spread the load throughout the hull,just the deck itself would flex.
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Old 09-02-2011, 10:06 PM   #8
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I think it would be a big mistake to have the deck moulding take any load at all. You'll peel it away from the bulkhead/vertical if you're not careful, especially if you've taken on water and are craning with it extra heavy.

Anyway, it's your build. I'm sure you know what you're doing.
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Old 09-02-2011, 10:12 PM   #9
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Quote:
Originally Posted by Jon Fuller View Post
I think it would be a big mistake to have the deck moulding take any load at all. You'll peel it away from the bulkhead/vertical if you're not careful, especially if you've taken on water and are craning with it extra heavy.

Anyway, it's your build. I'm sure you know what you're doing.
All advice is more than welcome,whats the bracketry your on about?Ally angle framework inside?
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Old 09-02-2011, 11:24 PM   #10
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Lifting eyes!

Funny things these!
I have Never been keen on making these for anyone else
The reason being which is easy overlooked is the lack of them being load rated
If these are supplied to someone who puts them on a boat worth say 50-100k
and one of the breaks whilst on a crane damaging the boat who do you think will be responsible?
The insurance company will sure be interested and at the very least want to see the load calculations and the stress analysis.
So think twice is my advise before selling these.
Remember the crane operator will not lift without certified straps so why would the things these attach to be any different?
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Old 09-02-2011, 11:34 PM   #11
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Quote:
Originally Posted by Cyco View Post
Funny things these!
I have Never been keen on making these for anyone else
The reason being which is easy overlooked is the lack of them being load rated
If these are supplied to someone who puts them on a boat worth say 50-100k
and one of the breaks whilst on a crane damaging the boat who do you think will be responsible?
The insurance company will sure be interested and at the very least want to see the load calculations and the stress analysis.
So think twice is my advise before selling these.
Remember the crane operator will not lift without certified straps so why would the things these attach to be any different?
Cye,
Very valid point and I have not put these on the trading forum, although I can obtain the test results for breaking strains etc formed under a destruction test should I decide to sell them and should this be requested obvioulsy along with full 3.1 test certs for all materials. I cannot vouch for how they are mounted or the materials used in the make up of the hull itselfs specifcally around the mounting points.
As a side note, on my old phantom I believe it was crained in and out using 6mm formed towing eyes/rings that are avalaible for around £10 from any chandlerly.
cheers
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Old 10-02-2011, 12:43 AM   #12
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Quote:
Originally Posted by Dan View Post
I've seen a few pics on here about some of the high quality lifting eyes and the welding polsihing etc etc but I have to be honest, these are the best quality I have seen, the pictures dont do them justice as taken with my phone, if you look at them in the flesh you would think they are machined and polished all from a stainless billet!
They look nice, but i bet on a 6000 pound boat if mounted on the transom ( where they belong ) the sideload from the strap will bend them !

And i agree on the certification, that is why the ones from stainless marine or latham are so god damn expensive !!!!

Just sayin...
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Old 10-02-2011, 07:07 AM   #13
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Quote:
Originally Posted by DAREDEVIL View Post
They look nice, but i bet on a 6000 pound boat if mounted on the transom ( where they belong ) the sideload from the strap will bend them !

And i agree on the certification, that is why the ones from stainless marine or latham are so god damn expensive !!!!

Just sayin...
Providing certification for materials wouldnt/shouldnt cost any reasonable manufacture a penny, its the testing where the expense lies.
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Old 10-02-2011, 08:12 AM   #14
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Quote:
Originally Posted by DAREDEVIL View Post
They look nice, but i bet on a 6000 pound boat if mounted on the transom ( where they belong ) the sideload from the strap will bend them !

And i agree on the certification, that is why the ones from stainless marine or latham are so god damn expensive !!!!

Just sayin...
Mount them at an angle?
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Old 10-02-2011, 08:27 AM   #15
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Materials

Quote:
Originally Posted by Dan View Post
Providing certification for materials wouldnt/shouldnt cost any reasonable manufacture a penny, its the testing where the expense lies.
cheers
Dan the material spec is only a part of it.
You would need a lifting SWL cert plus max load stamp on the lifting eye.
Any fixings bolts etc you could pass ownership of to the hull owner, however whatever bolt hole sizes you have put into your lifting eye base need to be sized for the max weight load.
Example: if you put a clearance hole to suit an M8 bolt and the tensional load for the bottom 2 bolts exceeds the strength of an A2-80 then you would need to move up to maybe an M10 A2-80 and check again.
You would also need to consider to shear strength of the top 2 bolts as these would see the highest shear load.
It is no good just specifiying a larger hole, if any accident happens and you have sold a set of these you will need to have all of this information to hand to prove these calcs have been done along with the load testing.

You would probably need a coded welder (?) to weld these up.
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Old 10-02-2011, 08:47 AM   #16
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Quote:
Originally Posted by Cyco View Post
Dan the material spec is only a part of it.
You would need a lifting SWL cert plus max load stamp on the lifting eye.
Any fixings bolts etc you could pass ownership of to the hull owner, however whatever bolt hole sizes you have put into your lifting eye base need to be sized for the max weight load.
Example: if you put a clearance hole to suit an M8 bolt and the tensional load for the bottom 2 bolts exceeds the strength of an A2-80 then you would need to move up to maybe an M10 A2-80 and check again.
You would also need to consider to shear strength of the top 2 bolts as these would see the highest shear load.
It is no good just specifiying a larger hole, if any accident happens and you have sold a set of these you will need to have all of this information to hand to prove these calcs have been done along with the load testing.

You would probably need a coded welder (?) to weld these up.
Cye,
I made the reference to material spec in relation to daredevils post as a full cert pack would include all testing result including material 3.1 certs.
Your exactly right on all of the above tho, I'm unsure why this is being discussed on a gallery thread as it appears to be more techincal and as I pointed out I'm not knocking these out in mass production for sale to the masses, I was just chuffed to bits with the finished article but hay ho.
Who did the testing on the ones you made out of interest?
I'm pretty lucky down here as there are a few testing locations due to the work the dockyard put out, as for being a coded welder, yep your on the money and fortunately I am.
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Old 10-02-2011, 01:11 PM   #17
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lifting eyes

Quote:
Originally Posted by Dan View Post
Cye,
I made the reference to material spec in relation to daredevils post as a full cert pack would include all testing result including material 3.1 certs.
Your exactly right on all of the above tho, I'm unsure why this is being discussed on a gallery thread as it appears to be more techincal and as I pointed out I'm not knocking these out in mass production for sale to the masses, I was just chuffed to bits with the finished article but hay ho.
Who did the testing on the ones you made out of interest?
I'm pretty lucky down here as there are a few testing locations due to the work the dockyard put out, as for being a coded welder, yep your on the money and fortunately I am.
By the way dan they do look good

I use Bristol rope and twine or alpha lifting for load cert's.

The info was more of a caution if you were thinking of selling them and to other looking to buy them as this is usually overlooked and has the ability to cause a huge amount of damage to both property and person.
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Old 10-02-2011, 01:22 PM   #18
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Quote:
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By the way dan they do look good

I use Bristol rope and twine or alpha lifting for load cert's.

The info was more of a caution if you were thinking of selling them and to other looking to buy them as this is usually overlooked and has the ability to cause a huge amount of damage to both property and person.
Thanks, I do realise the potenial for problems if not made correctly although wasnt sure where you were going with this at one stage but onwards and upwards!
I'm chuffed with them, and contrary to what our amercian friend thinks the actual "load" testing is not that expsensive.
Cye, have you still got that pole top?
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Old 10-02-2011, 02:49 PM   #19
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Quote:
Originally Posted by dowdy View Post
Mount them at an angle?
That would be a good idea.

The reason for my previos post is i had mine made custom, since i needed them 2 inches longer then like from Stainless marine. The shop that made them used thicker matterial then original and they look just like the ones in the picture without the 2 extra holes.
The shop is a well known CNC and Stainless welding shop for boating industry after 6-7 month of lifting at races they bend slightly.
They still look to be sound and look good , but both are bend inwards.

BTW, DAN..i think they look cool just wanted to let you know about the problem i had.
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Old 10-02-2011, 06:28 PM   #20
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Quote:
Originally Posted by DAREDEVIL View Post

And i agree on the certification, that is why the ones from stainless marine or latham are so god damn expensive !!!!

Just sayin...
I'm not sure whether it's me or you but I can't see any similar products from Stainless Marine or Latham - or did you imagine it? I have been buying products from Stainless Marine for ten years and visited the factory in Miami and never see these items - of course I could be mistaken?
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