Artic trailer Air

[milkloss]

Really not keen on the whole practice to be honest as there is absolutely zero imposed load on the tractor drawbar , no weight being carried by the tractor.


The "dolly is technically a trailer in its own right as it can be towed independently.
When coupled to the trailer the trailer then " technically" becomes a second trailer ( like towing two silage trailers) .
.

Your first point I quoted isn’t really true, you obviously have little experience using one with the correct design. The position of the fifth wheel according to the axle of dolly can be used to put a fair weight on the draw bar.

The dolly is only a trailer in its own right if it can be detached without the use of tools I believe. So that aspect can be overcome.

 

[puntabrava]

Never said anything about going on the road but thanks for your input on thread.

What’s the fastrac for in your avatar then, rounding up sheep?

 

[njneer]

Your first point I quoted isn’t really true, you obviously have little experience using one with the correct design. The position of the fifth wheel according to the axle of dolly can be used to put a fair weight on the draw bar.

The dolly is only a trailer in its own right if it can be detached without the use of tools I believe. So that aspect can be overcome.

I have plenty of experience with fifth wheels and axle loadings.
As I stated in a following comment as below the position of the fifth wheel relative to the axle position on the dolly has a massive influence on imposed loads as long as it is a "fixed " drawbar and not a hinged one.
The issue is whether it has been properly set up or just a dolly bought and backed under a trailer without the due consideration to this point.

Yes I believe ( again not a lawyer) that fixing the sword rendering it uncouplable and removing the landing legs " technically" makes the dolly and trailer one unit .
5th wheel mounted forward of the centre line of the axle will impose load on the drawbar but only on a fixed drawbar not one that is hinged like on drag trailers.

 

[joe soapy]

And dont forget to grease the turntable, or it can lead to much excitement

 

[ollie989898]

If the fudging thing is not legal or safe to use on the road you should not be using it at all nor asking some poor sod to either. In no other industry would old shagged kit be deemed acceptable 'because we arent taking it on the road'.

This is safety being eroded in the name of cost, lets not fudge about here.

 

[TripleSix]

You'll all be telling me my potato carting rig is unacceptable next....

 

[roscoe erf]

Just hit the shunt button to move in the yard them so ......
Suspension filled from the tank through a height control valve connected between chassis and axle with a linkage.

Red line fills the tank
Blue line works the trailer valve (shape of a mushroom) allowing air from the trailer tank to the brake pots. This is the foot brake or "Service" line.

When you pull the red line off, the trailer valve moves applying the "handbrake" again applied using air from the trailer tank.

not blue its yellow

 

[roscoe erf]

Yes all air related systems are supplied from the Red Line.

Really not keen on the whole practice to be honest as there is absolutely zero imposed load on the tractor drawbar , no weight being carried by the tractor.
It's ok if the trailer brakes are well maintained and serviced but as we all know this is generally not the case then with minimal weight on the ground and lots of weight behind is a recipe for disaster.

There is a thread in Agricultural matters forum " sobering thought for the day "
Worth a read as it is sobering reminder of what can happen when cavalier attitudes,to what passes for people's idea of brakes and maintenance these days, culminates in a wholly avoidable accident.

The "dolly is technically a trailer in its own right as it can be towed independently.
When coupled to the trailer the trailer then " technically" becomes a second trailer ( like towing two silage trailers) .
U.K. Legislation is that a second towed trailer cannot be loaded.
There are a few silage squads have been found out on this by towing a trailer with the van on it behind a silage trailer , you can tow the trailer behind the trailer with the van on it but not the other way round.
Some went down he road of doubling up silage trailers and towing the van with the spare tractor.
Again not a fan of these set ups at all.
I have worked first hand in MOT preparation on trucks and trailers and it is seriously strict criteria for a reason .

wow its still in court and yet you know the outcome

 

[ollie989898]

You'll all be telling me my potato carting rig is unacceptable next....

View attachment 632036

What could go wrong?

'But it's ok, we won't be going on the road'.

 

[joe soapy]

You'll all be telling me my potato carting rig is unacceptable next....

View attachment 632036

You will need to hook up the airlines before you go out on the road with that

 

[ollie989898]

You will need to hook up the airlines before you go out on the road with that

Do you think there is enough weight on the tow hitch? Better put a few more spud boxes on the back to give the rear axle some bite.

 

[joe soapy]

Do you think there is enough weight on the tow hitch? Better put a few more spud boxes on the back to give the rear axle some bite.

Maybe a fat driver will add reguired weight on the wheels

 

[njneer]

wow its still in court and yet you know the outcome

Fair comment .
We should of course let the relevant authorities decide and apportion the cause of the accident
Wasn't intended to de a predetermination of the out come of the case only expressing a view on the very unfortunate death of a young man just doing his job.
Apologies to anyone directly involved .

 

[Richard Smyth]

not blue its yellow

They are blue down here

 

[Bobthebuilder]

If the fudging thing is not legal or safe to use on the road you should not be using it at all nor asking some poor sod to either. In no other industry would old shagged kit be deemed acceptable 'because we arent taking it on the road'.

This is safety being eroded in the name of cost, lets not fudge about here.

The OP didn’t say it was a knackered illegal trailer [emoji849] he just asked about shifting a trailer with a forklift that’s not got an air system on it, like I said you can get plenty good 2nd hand wagon trailers that are still legal and pull them with a dolly

 

[mogman]

The OP didn’t say it was a knackered illegal trailer [emoji849] he just asked about shifting a trailer with a forklift that’s not got an air system on it, like I said you can get plenty good 2nd hand wagon trailers that are still legal and pull them with a dolly

Yes I have a few to sell

 

[puntabrava]

The OP didn’t say it was a knackered illegal trailer [emoji849] he just asked about shifting a trailer with a forklift that’s not got an air system on it, like I said you can get plenty good 2nd hand wagon trailers that are still legal and pull them with a dolly

Wasn’t it you harping on last year about the NAAC meeting at the jcb factory and a talk being given by some retired plod/ expert, as I recall you kept on saying what a great event to attend and how much there was to learn!
Ask your NAAC expert his opinion on tractors towing dolly’s and 45 ft artic trailers.

 

[Bobthebuilder]

Wasn’t it you harping on last year about the NAAC meeting at the jcb factory and a talk being given by some retired plod/ expert, as I recall you kept on saying what a great event to attend and how much there was to learn!
Ask your NAAC expert his opinion on tractors towing dolly’s and 45 ft artic trailers.

wasn't harping on about anything just stating that it was a good event and judging by some of the comments in the thread about a farmer getting stopped with a tractor and trailer a few more should have went the NAAC "expert" may have an opinion but that's all it is, because it is still legal to tow ex wagon trailers with a dolly as long as it can't be removed classing it as a turntable trailer, as with any farm trailers we don't need MOTs but common sense to make sure what ever trailer your towing is road worthy and legal with brake/lights should be the norm, sadly it isn't with some people you yourself have bought ex wagon trailers and cut them down and welded in drawbars, personally I would rather tow with a dolly but each to their own, maybe you just can't reverse a dolly trailer

 

[mogman]

Well I know it’s in a foreign land but we use them over here a Jeep dolly, so if we assume that a tractor towing a dolly with a artic trailer is infact two trailers and the rear one cannot carry a load how do the heavy haulage boys do it, or is it because they run under STGO and can swerve a fair lump of the traffic laws us mere mortals have to complie with

 

[njneer]

View attachment 632398
Well I know it’s in a foreign land but we use them over here a Jeep dolly, so if we assume that a tractor towing a dolly with a artic trailer is infact two trailers and the rear one cannot carry a load how do the heavy haulage boys do it, or is it because they run under STGO and can swerve a fair lump of the traffic laws us mere mortals have to complie with

Most likely find with this heavy haulage unit the " second" fifth wheel will be a ball bearing turntable , essentially a massive bearing and not a detachable fifth wheel in the normal sense .
Some heavy haulage units the main fifth wheel is this ball bearing type and the neck never leaves the unit in the traditional sense so the outfit is one entity when coupled to the bed.