- Thread starter fizzy
- Start date
Do you mean the coupling on the vehicle or the trailer?
Ok I will start again.
From the front
Car limit
Tow bar limit
Tow ball limit
Hitch limit (this is just the ring fitting or ball cup bolt on part)
Coupling limit (this is the bit the hitch bolts too and has the brake activator and parking brake)
Trailer design weight limit.
From the front
Car limit
Tow bar limit
Tow ball limit
Hitch limit (this is just the ring fitting or ball cup bolt on part)
Coupling limit (this is the bit the hitch bolts too and has the brake activator and parking brake)
Trailer design weight limit.
Vehicle limit is 250kg
Tow bar limit is 250kg
Pin coupling limit - just checked - 350kg
Coupling limit - trying to find out
Axle 3500kg
You mentioned coupled brakes - are they still available? I know old land Rovers mentioned you could tow 4000kg with coupled brakes - I assumed they were hydraulic?
Tow bar limit is 250kg
Pin coupling limit - just checked - 350kg
Coupling limit - trying to find out
Axle 3500kg
You mentioned coupled brakes - are they still available? I know old land Rovers mentioned you could tow 4000kg with coupled brakes - I assumed they were hydraulic?
Hydraulic or electric as long as they are UK spec not USA spec.
Is that a pin and ball on the towbar?
If it is the pin has a lower rating than the ball. Often hard to find that out. Especially the ones where the pin goes through the ball.
Pure pin units are higher.
Coupling should have a rating plate on it.
If it does not then you are wasting your time as you wont pass the IVA.
Other thing to watch is that when using all the cars nose limit you wont have much left of the rear axle limit so rear passengers or boot load needs to be reduced.
The plate is plainly visible but couldn't read it clearly. Just given it a clean - good job I did - thanks!
Only rated to S 150kg
Good shout 
I thought a 3500kg axle and coupling would be rated higher.
So I will need to move the axle a tad - rather do it now than when the mudguards are in place! I drilled a series of holes to give me the adjustment I might need.
Only rated to S 150kg
Good shout I thought a 3500kg axle and coupling would be rated higher.So I will need to move the axle a tad - rather do it now than when the mudguards are in place! I drilled a series of holes to give me the adjustment I might need.
sako243
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There were hydraulic over air (or is it air over hydraulic) kits available. Basically a valve that went inline to the brake system and adjusted the air pressure to the trailers appropriately.
@8ob said he had a kit he'd donate to me for the Sandringham
since that's plated for 4t trailers (although no mention of coupled brakes as it was built pre a lot of that). Also has far more swept braking area than most similar vehicles because of the size of the pads and drums and then there's 6 of them.To go over 3500kg you cant use over run brakes.There were hydraulic over air (or is it air over hydraulic) kits available. Basically a valve that went inline to the brake system and adjusted the air pressure to the trailers appropriately.
@8ob said he had a kit he'd donate to me for the Sandringham
They must be active in some way.
Air, elec ect.
AKN
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My 1993 Range Rover LSE had the option for a towing uplift to 4000kg with coupled brakes was the legal requirement then. I saw an installation years ago big Gast compressor squeezed in with the V8.
As far as I know its always been that way as the old landrovers had it specified 3.5t with over run or 4t with air brakes.
Gritineye
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One possible reason for that could be that so many are front wheel drive.
Judging by the way my Ducato tourque steers like mad when pulling away up hill with a trailer on, it's very sensitive to nose weight and minimum front axle loading.
A much discussed problem on motor home forums.
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sako243
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I'll have a look through the paperwork I had with it but I seem to recall seeing something differentiating the Sandringham 6s against other LRs with regards to not needing coupled brakes for 4t because they had so much braking effort available on the vehicle. I may be wrong but its strange I have it in my head that's the case.
I just spotted a Police Ford Ranger pickup in a petrol station. All marked up. Years ago it would have been a Defender of course
Anyway I was horrified when I saw the tow hitch. Someone had bolted a drop plate onto the hitch as it is too high for a lot of trailers. This drop plate was perhaps 10mm steel. But it was huge - bigger than an A4 sheet of paper. There was a tow ball bolted onto it right at the bottom. No support behind the plate at all. Surely that can't be legal? It will bend with any sort of force on it.
I was very tempted to take a piccy but they weren't a very pleasant lot.
Anyway I was horrified when I saw the tow hitch. Someone had bolted a drop plate onto the hitch as it is too high for a lot of trailers. This drop plate was perhaps 10mm steel. But it was huge - bigger than an A4 sheet of paper. There was a tow ball bolted onto it right at the bottom. No support behind the plate at all. Surely that can't be legal? It will bend with any sort of force on it.
I was very tempted to take a piccy but they weren't a very pleasant lot.
Bullet2012
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^^ Neveryet met a pleasant Hedlu
It matters not what the sandringham can do.
Any trailer over 3500kg can not run on over run brakes.
Probably yet my 4x4 Antara with a 2oookg tow capacity has an 80kg S nose weight limit. Which is just 4% at the max.
However even at the max with correct nose weight it tows like a dream.
8ob
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If there is 50kg of nose weight and the hitch height is correct for the trailer it will tow ok, I only ever load a trailer until I notice a very slight change in ride height on the tow vehicle, too much and the front of the vehicle goes light under heavy braking ,it gives the a.b.s an unnecessary workout and will cause a brown trouser moment.
Bob
Bob
Gritineye
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My 2.8 JDT LWB Ducato has 2000 kg TC and has max 80g NW, but can struggle for grip on hill starts with even only half loaded trailer.
Not enough for wheel spin but this sometimes causes noticeable torque steer felt through the steering wheel. which may be exacerbated by ample power and antilock trying to control it. It tows perfectly at max TC apart from that.
Hill starting ability is taken into account when deciding on a vehicles towing capacity.
Permanent 4WD and selectable low range is a big advantage in this regard, and is much more tolerant of vastly excessive NW.
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sako243
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You seem to have missed my point. I understand that now any trailer over 3.5t requires coupled brakes due to EU law but I was questioning when that rule got introduced.
I have a recollection of reading somewhere in some official documents relating to the Sandringham that it did not require coupled brakes to achieve maximum towing capacity hence why I'm asking when the 3.5t limit got introduced.
