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  #1141  
Old 12-01-2014, 08:24 PM
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Re: The Towing thread

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Originally Posted by Barboots View Post
Are you leaving them attached and using another pair of shackles to connect your chains? I've read that this isn't compliant... at least in some instances. Apparently a totally compliant solution is to attach hammerlocks to the towbar...

... not that I really see much difference between the two methods!

Cheers,
Steve
Agreed it is silly to have use two shackles (actually four) but what can you do? Whether it's compliant or not I don't really care. I'd be happy to argue out the technicalities with the authorities, engineer to engineer.

There are many things called hammerlocks. Do you mean chain split links? I figure you are not talking about a wresting hold

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  #1142  
Old 12-02-2014, 01:22 AM
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Re: The Towing thread

The wrestling hold may just work Bob. Probably depends on the grade of Spandex?

I agree with you on double shackles... not ideal but please demonstrate it being technically flawed. There again, me Mum regularly said "don't deal with d!ckheads" so I try to avoid roadside engineering discussions with simple folk!

I'll dig up a picture of what I meant... just in case you're towing into Queensland where I hear they are hot on such trivialities.

Cheers,
Steve
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  #1143  
Old 12-02-2014, 02:44 AM
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Re: The Towing thread

Clearly very different to how a shackle works
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  #1144  
Old 12-02-2014, 02:46 AM
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Re: The Towing thread

Image stolen from this thread:

http://caravanersforum.com/viewtopic.php?f=2&t=50597
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  #1145  
Old 12-02-2014, 05:57 AM
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Re: The Towing thread

What is the ideal link between the trailer chains and hitch receiver?
I currently have some crappy galvanised 8mm D-shackles that are probably rated to hold a bag of spuds. I can't find what I would call good quality D-Shackles in 8mm in the usual local places. 8mm is ideal as it makes it easy to thread through the horse floats chain, 10mm is too awkward. I should buy online but I really don't know whats best.

Those Gotstock bow shackles looked pretty average, no doubt they are functionally superior to my spud carriers, but they didn't inspire confidence but their very rough finish.
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  #1146  
Old 12-02-2014, 08:40 AM
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Re: The Towing thread

Best I've found are 1T WLL bow shackles Snuke. Anything bigger will not fit the Mopar bar.

Bob's on the right path though. A legal intermediate would mean less awkward hitching operations. With a 12 pin socket on one side, and a pair of 50A Andersons on the other, mine is quite annoying to hook up.
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  #1147  
Old 12-02-2014, 05:24 PM
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Re: The Towing thread

The safety chain to towing hitch question is one that regularly pops its head into caravanning circles - and generally promoted by just such as the situation with the awkward connection on the WK2.

The connection shackle must be rated strength equivalent to or greater than the safety chain. Note "rated" is the key word, and must be marked on the shackle.

Using 2 shackles is frowned upon - and argued over.

The hammerlock solution (as pictured) is acceptable (but ugly).

There are lots of stories about people being booked for dodgy connections (and personally I've seen some doozies that should have been booked) - but i've never actually met anyone face to face.

I just suck it up and use 12mm stainless steel shackles (you can't get "rated" ss shackles!) for my two chains - and grump every time I connect up.
When the van coupling broke clean off earlier this year the drawbar simply dropped onto the chains and the shackles did their job. The 12k drag through the dirt to get the van safe and somewhere to work on did most of the damage.

John
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  #1148  
Old 12-02-2014, 05:58 PM
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Re: The Towing thread

Quote:
Originally Posted by John47 View Post
The safety chain to towing hitch question is one that regularly pops its head into caravanning circles - and generally promoted by just such as the situation with the awkward connection on the WK2.

The connection shackle must be rated strength equivalent to or greater than the safety chain. Note "rated" is the key word, and must be marked on the shackle.

Using 2 shackles is frowned upon - and argued over.

The hammerlock solution (as pictured) is acceptable (but ugly).

There are lots of stories about people being booked for dodgy connections (and personally I've seen some doozies that should have been booked) - but i've never actually met anyone face to face.

I just suck it up and use 12mm stainless steel shackles (you can't get "rated" ss shackles!) for my two chains - and grump every time I connect up.
When the van coupling broke clean off earlier this year the drawbar simply dropped onto the chains and the shackles did their job. The 12k drag through the dirt to get the van safe and somewhere to work on did most of the damage.

John
I too used stainless steel shackles John, until I researched the subject of using rated shackles, and found that most (if not all) States advise that stainless steel shackles are unsuitable due to the fact that stainless will not "give" - it just snaps.
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  #1149  
Old 12-03-2014, 08:45 PM
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Re: The Towing thread

The rating on the shackle pictured above is its Working Load Limit. It may be used up to this load all day, every day, in commercial rigging applications where frequent shock loads may occur. It is not the load it will break at... not by any stretch of the imagination. The minimum breaking force, depending on the grade of the shackle, will be at least several times that embossed on it. Usually more.

Whilst I don't doubt a lesser shackle could be substituted without practical issue, it exposes one to the unknown and as such I'm not sure why anyone would consider it. The cost is trivial.

There's plenty of online resources where the baseline data for a rated shackle can be reviewed. There are none for an unmarked shackle.

Cheers,
Steve
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  #1150  
Old 12-03-2014, 10:04 PM
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Re: The Towing thread

Quote:
Originally Posted by Barboots View Post
Best I've found are 1T WLL bow shackles Snuke. Anything bigger will not fit the Mopar bar.

Bob's on the right path though. A legal intermediate would mean less awkward hitching operations. With a 12 pin socket on one side, and a pair of 50A Andersons on the other, mine is quite annoying to hook up.
I use 1.5 ton shackles that I bought from RUDD www.rudd.com.au in Midvale and Welshpool in WA. I've just looked on their website and I can't see them there but that is where i bought them.
They do fit the Best Bars towbar but are initially frustratingly tight, but the yellow paint wears off fairly quickly and then they fit fairly well.

Fitting a 12 pin plug was very difficult. I ended up cutting the bumper back a bit to create a wider gap to fit it in. The pinchweld is easy to put back on again so it doesn't look any different. If you were cutting an evern wider hole then pinchweld is easy to get from Clark Rubber.

That are in the GC is always going to be tight because of the design of the bar.
Peter
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  #1151  
Old 12-03-2014, 10:07 PM
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Re: The Towing thread

I'm planning on installing hammerlocks onto the bar to make hooking up easier.

Now about that bloody breakaway cable...

Cheers,
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  #1152  
Old 12-03-2014, 10:19 PM
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Re: The Towing thread

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Originally Posted by Barboots View Post
I'm planning on installing hammerlocks onto the bar to make hooking up easier.

Now about that bloody breakaway cable...

Cheers,
Steve
Hammer locks look like a good idea.
I hook the breakaway onto the recovery hook. BUt it means reaching under the back.
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