Treg couplings
Submitted: Monday, Jan 21, 2008 at 22:37
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i lean
Hi all I just recieved a Treg coupling in the mail that I ordered over the net.
There is no fitting instructions,the base has no bolt holes in it.
Do I need to weld another plate to it with bolt holes in it or is it OK to weld on to drew bar{ I dont think so}.
Your comments please
Reply By: Jack180 - Monday, Jan 21, 2008 at 22:55
Monday, Jan 21, 2008 at 22:55
Mines is just welded to the trailer draw bar. Has taken a beating and shown no signs of stress. I have put a
pic for you to look at in the "My Rig" section - Click the link below and have a look.
Hope that helps.
Cheers,
Jason
AnswerID:
283023
Reply By: Derek from Affordable Batteries & Radiators - Monday, Jan 21, 2008 at 22:56
Monday, Jan 21, 2008 at 22:56
Hi i lean
Have it professionally welded. My Supreme is welded and at 2000 kg loaded is fine. 5 years old and still perfect.
Regards
Derek.
AnswerID:
283024
Follow Up By: Trevor R (QLD) - Tuesday, Jan 22, 2008 at 19:46
Tuesday, Jan 22, 2008 at 19:46
Hi Derek,
I love your idea of having the flexible wiring harness in between the two solid mount recievers (one on car and other on A-frame). Seems I have another job to do to the Supreme before I next go away.
Thanks, Trevor.
FollowupID:
547763
Reply By: Member - Jiarna (NT) - Monday, Jan 21, 2008 at 23:00
Monday, Jan 21, 2008 at 23:00
I have a TREG hitch on my trailer, and it has 4 long bolts that pass through the casting to attach to the drawbar. AFAIK you cannot weld it on for 2 reasons - firstly it is not allowed, and secondly the casting is cast iron and won't weld anyway. If it's not cast iron, it probably isn't a TREG hitch. Only other suggestion is using 2 large U-bolts to clamp it onto the drawbar.
Good luck
John
AnswerID:
283025
Follow Up By: Member - Jiarna (NT) - Monday, Jan 21, 2008 at 23:03
Monday, Jan 21, 2008 at 23:03
I see the other replies now, looks a bit different than the one I got from Treg Trailers that has TREG moulded in the casting.
I'd agree with getting a professional welding job done - don't want it falling off!! LOL
John
FollowupID:
547592
Follow Up By: Member - Roachie (SA) - Monday, Jan 21, 2008 at 23:07
Monday, Jan 21, 2008 at 23:07
John,
Are you sure you're not talking about a "TRIGG" coupling. They are made of cast iron; whereas the TRIG is made of machined steel and can be welded.....
Cheers
Roachie
FollowupID:
547595
Follow Up By: Jack180 - Monday, Jan 21, 2008 at 23:08
Monday, Jan 21, 2008 at 23:08
???
Mines a treg hitch and its welded - was done in factory when the trailer was made for me by a trailer manufacturer. See
pic.
Its definatley allowed - it passed an inspection when i registered it and has a roadworthy safety certificate.
FollowupID:
547596
Follow Up By: Member - Roachie (SA) - Monday, Jan 21, 2008 at 23:39
Monday, Jan 21, 2008 at 23:39
Strewth.... I stuffed up the bloody spelling (above).
There are 2 different brands and they are compatible in their usage.
TREG is made of steel and can be welded.
TRIGG is made of cast and can't be welded.
Jack180: Mate I think that one on your trailer/van is a TRIGG. It is attached using 4 bolts, onto a steel plate that has been welded to the the "A" frame. It is cast; hence the need for it to be bolted on.
Roachie
FollowupID:
547605
Follow Up By: Jack180 - Monday, Jan 21, 2008 at 23:54
Monday, Jan 21, 2008 at 23:54
Roachie you are right - its is a trigg, however my reason for saying it was welded is that when i ordered from the manufacturer it came already attached to the steel plate.
I then supplied it to my trailer builder and he welded onto the trailer. So i was assuming that they all come already mounted to the plate and just need to be welded.
Perhaps Trigg did me a favor supplying it on a mounting plate already.
Cheers,
Jason
FollowupID:
547607
Follow Up By: Member - Kiwi Kia - Tuesday, Jan 22, 2008 at 13:44
Tuesday, Jan 22, 2008 at 13:44
Hi Jack180, I see that your safety chain is welded to the draw bar. Is this still allowed ? I thought they had to be bloted these days.
FollowupID:
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Reply By: Stephen M (NSW) - Monday, Jan 21, 2008 at 23:02
Monday, Jan 21, 2008 at 23:02
AnswerID:
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Follow Up By: Member - Jiarna (NT) - Monday, Jan 21, 2008 at 23:05
Monday, Jan 21, 2008 at 23:05
Ahhhhhh!! I have the model that works the override brakes, so that's why it's different. Safe to ignore my ramblings now LOL
John
FollowupID:
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Follow Up By: Stephen M (NSW) - Monday, Jan 21, 2008 at 23:06
Monday, Jan 21, 2008 at 23:06
Sorry clicked on submit before finishing. The flat bar with the black block on it is welded to the trailer, the other is pretty straight forward, take off your original towball (50MM) and put the part with the long thread onto the tongue. The two little bit of metal tags hanging down are to stop it from spinning when you tighten up. Regards Steve M
FollowupID:
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Reply By: donks1 - Tuesday, Jan 22, 2008 at 07:46
Tuesday, Jan 22, 2008 at 07:46
hi there all
i'm probably missing something here, but what is the advantage of using one of these compared to the normal ball/socket towing arrangement.
donks
AnswerID:
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Follow Up By: Member - Roachie (SA) - Tuesday, Jan 22, 2008 at 08:15
Tuesday, Jan 22, 2008 at 08:15
Donks,
MUCH better off-road operation due to a greater level of articulation fore and aft. Try to imagine a rig going down a very steep
creek crossing.....when it gets to the point where the tow connection is at it's lowest point, there is a distinct possibility that a normal ball coupling could either snap off at the base of the ball, or bend the tongue etc.
The poly block allows for the trailer to "hang" at 90 degrees if necessary (not that you ever would be at THAT much of an angle of course).
The poly block also provides a lot less movement (as in vibration etc) between the tow vehicle and the trailer.
Roachie
FollowupID:
547636
Follow Up By: Member - Alan H (Narangba QLD - Tuesday, Jan 22, 2008 at 08:15
Tuesday, Jan 22, 2008 at 08:15
Donks
They are a 360degree hitch - Ball and socket can only move about 22 degrees - flexibility for going through creeks etc.
Alan
FollowupID:
547637
Follow Up By: Yonnee - Tuesday, Jan 22, 2008 at 08:20
Tuesday, Jan 22, 2008 at 08:20
You only get 360* if the trailer tips over. Your entry and exit articulation with a "Polyblock" coupling only gains you between 5 and 7 degrees.
FollowupID:
547638
Follow Up By: Yonnee - Tuesday, Jan 22, 2008 at 08:26
Tuesday, Jan 22, 2008 at 08:26
The only coupling that allows a full 180* fore and aft articulation is the Orac coupling, which has its connecting pin horizontally fitted.
FollowupID:
547641
Follow Up By: donks1 - Tuesday, Jan 22, 2008 at 08:39
Tuesday, Jan 22, 2008 at 08:39
thanks guys
done a fair bit of 4wding and a bit of towing, but not at the same time
donks
FollowupID:
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Follow Up By: Member - Oldplodder (QLD) - Tuesday, Jan 22, 2008 at 08:47
Tuesday, Jan 22, 2008 at 08:47
I think the Treg & Trigg only give you about 70 deg vertically (i.e. 35 deg above & below horizontal) and 360 deg rotation. :o)
Better than the 50mm ball coupling at 22 deg, which can reach it's limit driving through a drain.
Site Link
FollowupID:
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Follow Up By: Yonnee - Tuesday, Jan 22, 2008 at 09:08
Tuesday, Jan 22, 2008 at 09:08
They advertise 35 degrees, but having worked for a major Trailer/Caravan parts supplier/manufacturer, I've actually measured one and between 28 and 30 deg.
FollowupID:
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Reply By: Yonnee - Tuesday, Jan 22, 2008 at 09:03
Tuesday, Jan 22, 2008 at 09:03
Let's just clear something up about coupling brands...
TRIGG BROS. are one of the biggest manufacturers of cast couplings in Australia. They have their own "Polyblock" type coupling that has a cast receiver that bolts to your towbar. It utilises the cast body of the over-ride coupling that CANNOT be welded. These also currently run a red coloured block.
The TREG coupling is manufactured by Tregoning P/L (Treg Trailers) in S.A. with original being the Gold coloured steel coupling pictured above, and is commonly welded to the drawbar of your trailer/Caravan. When the demand arose for their couplings to be used with over-ride brakes, Treg combined their polyblock hitch and head with the cast body section of a TRIGG BROS coupling. It was probably cheaper than setting up their own casting foundry. You should also see grinding marks where the "TB" logo has been removed. Originally these had red polyblocks, now they are blue.
Hope this clears up some confusion.
AnswerID:
283070