How to Secure a Screw-in Shackle

[minuteman62-64]

I've got a bow shackle (seems to be similar, if not identical to an anchor shackle) that is the screw-in type. There is a hole on one end of the pin, that I understand is for wiring the pin in place so it won't vibrate/slip out.

Exactly how is the pin supposed to be wired in place? I want to avoid having the wire exposed to wear from the hardware that will be attached to the shackle.

 

[oldjeep]

Re: How to Secure a Screw-in Shackle

Like this:

 

[tanuki]

Re: How to Secure a Screw-in Shackle

Ditto like oldjeep showed in photo, but I use a HD nylon zip tie which will not corrode, but I do not know about the abrasion factor yet.

 

[Bob's Garage]

Re: How to Secure a Screw-in Shackle

Keep a weathered eye on the zip tie. It will break down rather quickly and will separate when least expected.

 

[minuteman62-64]

Re: How to Secure a Screw-in Shackle

OK, thanks. Since it is a stainless steel shackle I bought some SS wire and secured it as in the photo.

 

[90stingray]

Re: How to Secure a Screw-in Shackle

Ditto like oldjeep showed in photo, but I use a HD nylon zip tie which will not corrode, but I do not know about the abrasion factor yet.

Thats why you should use SS safety wire... wont corrode. .032" should do just fine.

Yeah, weathered zipties will will crumble to pieces when a little tension is applied. Keep a close eye, or change it out to keep it fresh.

 

[UncleWillie]

Re: How to Secure a Screw-in Shackle

If it something you are going to be taking apart and putting back together on a regular basis; Zip Ties will be fine.
I would not trust the white ones to be good for more than a few weeks in the weather.
The Black one are UV stabilized and can hold up for many months but will eventually become weak and brittle.

The SS wire is always the best bet, especially if you intend it to be permanent.

 

[Home Cookin']

Re: How to Secure a Screw-in Shackle

or nylon string or bronze wire.

it's a rare day when a pliers-tight shackle unscrews itself all the way out and the pin falls out (won't happen when the shackle is under pressure) so it's not really that big a deal what you use.

So it depends on what the shackle is used for--don't know what you mean by "bow shackle" but if that's how you attach the boat to the trailer, anything should be fine.

 

[minuteman62-64]

Re: How to Secure a Screw-in Shackle

or nylon string or bronze wire.

it's a rare day when a pliers-tight shackle unscrews itself all the way out and the pin falls out (won't happen when the shackle is under pressure) so it's not really that big a deal what you use.

So it depends on what the shackle is used for--don't know what you mean by "bow shackle" but if that's how you attach the boat to the trailer, anything should be fine.

It is called a "Bow Shackle" (for reasons that are not obvious to me) and I will be attaching it to my bow eye to recieve the winch strap. This will allow room in the bow eye for attachment of a safety chain (not enough room if I have the winch strap hooked directly to the bow eye. Anyways, it (the shackle) will remain attached to the bow eye while the boat is at sea - with no load on it - thus my interest insecuring it with wire.

 

[Home Cookin']

Re: How to Secure a Screw-in Shackle

does your winch strap have a hook? if so, hook it to the boat's bow eye, then hook your safety chain through the eye of the winch strap hook, and skip the shackle, as one more lonk in the chain (and it won't be hanging off the bow eye bouncing around all day)

 

[UncleWillie]

Re: How to Secure a Screw-in Shackle

It is called a "Bow Shackle" ... and I will be attaching it to my bow eye to receive the winch strap. This will allow room in the bow eye for attachment of a safety chain (not enough room if I have the winch strap hooked directly to the bow eye...

If your Bow Eye will Not take the Winch Hook and the Safety Chain, how will it take the Shackle and the Safety Chain?
Your winch hook must be something way over-sized.
Let's see a picture!

It is a mighty small bow eye that will not take a Winch Hook and a Safety Chain Hook at the same time.

 

[minuteman62-64]

Re: How to Secure a Screw-in Shackle

If your Bow Eye will Not take the Winch Hook and the Safety Chain, how will it take the Shackle and the Safety Chain?
Your winch hook must be something way over-sized.
Let's see a picture!

It is a mighty small bow eye that will not take a Winch Hook and a Safety Chain Hook at the same time.

View attachment 174805

Yep, small hole in "fat" bow eye plus real big winch hook. See attached.

 

[UncleWillie]

Re: How to Secure a Screw-in Shackle

Yep, small hole in "fat" bow eye plus real big winch hook. See attached.

Yep! I See that now!

Have you considered just adding a second Bow Eye?

 

[Home Cookin']

Re: How to Secure a Screw-in Shackle

Yep, small hole in "fat" bow eye plus real big winch hook. See attached.

nothing wrong with the way you have it. And if that's a 14' tinnie, you are more than safe with what you have. don't over think or over engineer it.

 

[minuteman62-64]

Re: How to Secure a Screw-in Shackle

don't over think or over engineer it.

That train has left the station

After my brain churning for a few weeks, about $50 in hardware and a whole bunch of advice, I'm headed towards the most god-awful arangement you've ever seen for a 400-600 lb. boat.

I'll post a photo of where I end up.

 

[IllesheimVet]

Re: How to Secure a Screw-in Shackle

If you do end up using safety wire, (to keep from getting stuck with that sharp end sticking out), make a few more turns in the end and bend the end (1/4 inch or so) back so it points more toward the pin hole, rather than sticking out like in the photo. Common practice in aviation.

 

[minuteman62-64]

Re: How to Secure a Screw-in Shackle

Here's the over thought/over engineered set up that I am currently going with: http://forums.iboats.com/trailers-towing/how-should-i-hook-up-bow-safety-chain-581376.html

 

[Home Cookin']

Re: How to Secure a Screw-in Shackle

that's one of the worst I've ever seen