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23-02-2020, 22:14
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#16
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Registered User
Join Date: Apr 2007
Location: Australia
Boat: Island Packet 40
Posts: 6,218
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Re: Stainless steel thickness for rigging eye extension
Quote:
Originally Posted by GILow
On the upside, being on the bottom of the planet makes it easier to get up the mast.
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Interesting theory. So you are not really climbing down to the deck, you are climbing up upside down.
So bats and flying foxes in the northern hemisphere don't sleep hanging upside down but standing up. Since they don't have anuses they must end up really full of s---.
It's an amazing world.
If you need any more reassurance measure the saddles on the toggles, mine on 8 mm wire rigging turn buckles are 5 mm x 40 mm.
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24-02-2020, 01:09
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#17
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Registered User
Join Date: Sep 2008
Location: On the boat, somewhere in Australia.
Boat: Swanson 42 & Kelly Peterson 44
Posts: 8,840
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Re: Stainless steel thickness for rigging eye extension
Quote:
Originally Posted by RaymondR
Interesting theory. So you are not really climbing down to the deck, you are climbing up upside down.
....
If you need any more reassurance measure the saddles on the toggles, mine on 8 mm wire rigging turn buckles are 5 mm x 40 mm.
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The hardest part is catching the top mast steps with my hands as I fly past.
Thanks for those saddle measurements, interesting that they are the same for the 10 mm wire.
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Refitting… again.
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24-02-2020, 14:43
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#18
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Registered User
Join Date: Dec 2016
Location: Sea of Cortez/northern Utah/ Wisconsin/ La Paz, BCS
Boat: Hans Christian 38 Mk II
Posts: 946
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Re: Stainless steel thickness for rigging eye extension
The shearing load might not control the proportions. Bearing loads induced by the clevis pins might be more critical.
My steel design handbook was one of my most referenced pieces of concentrated information I used for many years. Despite Bilkenny’s somewhat shrill comment, having a metal design handbook of sorts is very useful, much of the math is very simple and understandable.
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24-02-2020, 18:03
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#19
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Registered User
Join Date: Sep 2008
Location: On the boat, somewhere in Australia.
Boat: Swanson 42 & Kelly Peterson 44
Posts: 8,840
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Re: Stainless steel thickness for rigging eye extension
Quote:
Originally Posted by AndyEss
The shearing load might not control the proportions. Bearing loads induced by the clevis pins might be more critical.
My steel design handbook was one of my most referenced pieces of concentrated information I used for many years. Despite Bilkenny’s somewhat shrill comment, having a metal design handbook of sorts is very useful, much of the math is very simple and understandable.
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Yes, it’s worth noting that the Hamma toggles have a greater radius around the clevis pins but taper away quite a bit between the pin holes and the toggle saddle.
I think I found the bit in The Rigger’s apprentice that billkny was referring too, where he documents chainplate options. It’s a bit light-weight but I am easily exceeding his recommendations by a number of magnitudes. Although I am unhappy about the weight aloft, I don’t feel like playing around with the safety factor by removing any metal.
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Refitting… again.
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24-02-2020, 19:04
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#20
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Registered User
Join Date: Apr 2007
Location: Australia
Boat: Island Packet 40
Posts: 6,218
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Re: Stainless steel thickness for rigging eye extension
Quote:
Originally Posted by GILow
Yes, it’s worth noting that the Hamma toggles have a greater radius around the clevis pins but taper away quite a bit between the pin holes and the toggle saddle.
I think I found the bit in The Rigger’s apprentice that billkny was referring too, where he documents chainplate options. It’s a bit light-weight but I am easily exceeding his recommendations by a number of magnitudes. Although I am unhappy about the weight aloft, I don’t feel like playing around with the safety factor by removing any metal.
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Not worth it mate. Stow something down on top of the ballast and get rid of your wife's hair drier, iron, and all those extra pairs of shoes instead.
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24-02-2020, 20:43
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#21
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Registered User
Join Date: Sep 2008
Location: On the boat, somewhere in Australia.
Boat: Swanson 42 & Kelly Peterson 44
Posts: 8,840
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Re: Stainless steel thickness for rigging eye extension
Quote:
Originally Posted by RaymondR
Not worth it mate. Stow something down on top of the ballast and get rid of your wife's hair drier, iron, and all those extra pairs of shoes instead.
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Oh, I got rid of the wife altogether. Huge savings on boat complexity right there.
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Refitting… again.
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24-02-2020, 23:19
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#22
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Moderator
Join Date: Nov 2011
Location: aboard, cruising in Australia
Boat: Sayer 46' Solent rig sloop
Posts: 26,886
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Re: Stainless steel thickness for rigging eye extension
LOL!
Cockpit, rolling on sole.
Ann
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Who scorns the calm has forgotten the storm.
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25-02-2020, 02:18
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#23
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Registered User
Join Date: Sep 2008
Location: On the boat, somewhere in Australia.
Boat: Swanson 42 & Kelly Peterson 44
Posts: 8,840
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Re: Stainless steel thickness for rigging eye extension
Quote:
Originally Posted by JPA Cate
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Well, for a start, she wanted a second toilet.
Single life is so much simpler than that plumbing job.
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Refitting… again.
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25-02-2020, 04:28
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#24
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Registered User
Join Date: Apr 2007
Location: Australia
Boat: Island Packet 40
Posts: 6,218
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Re: Stainless steel thickness for rigging eye extension
Quote:
Originally Posted by GILow
Well, for a start, she wanted a second toilet.
Single life is so much simpler than that plumbing job.
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Sounds like you had a lucky escape. Mine used to leave the tap running as she did at home whilst preparing food and empty the water tanks.
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25-02-2020, 15:25
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#25
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Registered User
Join Date: Sep 2008
Location: On the boat, somewhere in Australia.
Boat: Swanson 42 & Kelly Peterson 44
Posts: 8,840
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Re: Stainless steel thickness for rigging eye extension
Quote:
Originally Posted by RaymondR
Sounds like you had a lucky escape. Mine used to leave the tap running as she did at home whilst preparing food and empty the water tanks.
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I confess, I’ve actually been encouraging my girlfriend to leave the taps running as I am trying to flush as much water through the new tanks as I can.
I concede I may regret this later on.
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Refitting… again.
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25-02-2020, 18:15
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#26
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Registered User
Join Date: Apr 2007
Location: Australia
Boat: Island Packet 40
Posts: 6,218
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Re: Stainless steel thickness for rigging eye extension
Quote:
Originally Posted by GILow
I confess, I’ve actually been encouraging my girlfriend to leave the taps running as I am trying to flush as much water through the new tanks as I can.
I concede I may regret this later on.
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There's no doubt our biological urges get us into some terrible scrapes.
I solved my problem by removing the electric pressure pump and installing a hand pump. Might be something to keep in mind once the tanks are sweet.
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25-02-2020, 19:04
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#27
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Registered User
Join Date: Sep 2008
Location: On the boat, somewhere in Australia.
Boat: Swanson 42 & Kelly Peterson 44
Posts: 8,840
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Re: Stainless steel thickness for rigging eye extension
Quote:
Originally Posted by RaymondR
There's no doubt our biological urges get us into some terrible scrapes.
I solved my problem by removing the electric pressure pump and installing a hand pump. Might be something to keep in mind once the tanks are sweet.
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Yes, there’s no getting past hand pumps for efficient water use.
Not gonna comment on the biological urges bit... down that path madness lies.
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Refitting… again.
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25-02-2020, 21:20
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#28
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Registered User
Join Date: Apr 2007
Location: Australia
Boat: Island Packet 40
Posts: 6,218
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Re: Stainless steel thickness for rigging eye extension
We seem to have very thoroughly drifted this one.
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25-02-2020, 21:40
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#29
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Registered User
Join Date: Sep 2008
Location: On the boat, somewhere in Australia.
Boat: Swanson 42 & Kelly Peterson 44
Posts: 8,840
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Re: Stainless steel thickness for rigging eye extension
Quote:
Originally Posted by RaymondR
We seem to have very thoroughly drifted this one.
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What was the original question?
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