stu675:
Interesting. At possibly the point of no return for the trailer, the cab is still pretty flat on the ground, so without looking in your mirrors how much warning would you have?
40 mph for this bend, could that ever be reasonable? Is the truck loaded with a particularly high center of gravity?
Its the bit where the M25 joins the M11 northbound. Nasty bends and a camber as well. Its well signposted that spped should be 30mph and there are also signposts warning HGVs of camber and risk of going over.
Just another bellend that has blagged an HGV licence.
M11 southbound. North doesn’t have the lane to the left (beyond the cones in the video)
Notimetoulouse:
just not worth trying to be quick through there good example of why you have to take your time
ive been through there hundreds of times always took it slowish especially when doing vertical paper reels
I’ve come round that, with paper reels. I did about 15mph.
And the clockwise too.So many times I drove through this junction(m25 onto southm11).the signs say 30mph.But even at 30 ,it doesnt feel comfortable but then I look in the mirror and I see s truck coming up from behind on the limiter!
OK, a bit of an exaggeration but you know what I mean…
stu675:
Interesting. At possibly the point of no return for the trailer, the cab is still pretty flat on the ground, so without looking in your mirrors how much warning would you have?
40 mph for this bend, could that ever be reasonable? Is the truck loaded with a particularly high center of gravity?
That’s a surprising amount of lateral articulation in a fifth wheel coupling that only really pivots in the fore and aft direction.
The unloaded nearside of the drive axle might already be lifting off the road at that point and some of it could also be the ‘flex’ in the tractor unit’s chassis and steer axle suspension.
Artics are also less stable than rigids in that regard especially when the unit is at an angle to the trailer providing less lateral support for the front of the trailer.
It’s a tightening double bend in opposite directions creating a pendulum effect even with an ideal CofG.
It needs a slow approach in a low gear and careful steering inputs.With a good long pause in the middle between changing lock from one direction to the other in the case of a double or series of bends or when negotiating roundabouts.While if/when gravity takes over it all happens quick.
Basically it’s an artic not a BMW M3 or a Merc Sprinter van.
Case closed currywurst has stated all facts time to move on
stu675:
Interesting. At possibly the point of no return for the trailer, the cab is still pretty flat on the ground, so without looking in your mirrors how much warning would you have?
40 mph for this bend, could that ever be reasonable? Is the truck loaded with a particularly high center of gravity?
That’s a surprising amount of lateral articulation in a fifth wheel coupling that only really pivots in the fore and aft direction.
The unloaded nearside of the drive axle might already be lifting off the road at that point and some of it could also be the ‘flex’ in the tractor unit’s chassis and steer axle suspension.
Artics are also less stable than rigids in that regard especially when the unit is at an angle to the trailer providing less lateral support for the front of the trailer.
It’s a tightening double bend in opposite directions creating a pendulum effect even with an ideal CofG.
It needs a slow approach in a low gear and careful steering inputs.With a good long pause in the middle between changing lock from one direction to the other in the case of a double or series of bends or when negotiating roundabouts.While if/when gravity takes over it all happens quick.
Basically it’s an artic not a BMW M3 or a Merc Sprinter van.
Case closed currywurst has stated all facts time to move on
But as per usual, he hasn’t got a clue, even though he tries to come across as the expert.
I had to watch a safety video, (Iirc, during fuel cartage training) taken from a traffic monitoring camera. A decreasing radius, off camber left hand bend with a history of truck rollovers. A video was taken at low speed, through the windscreen of a truck, at what appeared to be a tight, but otherwise innocuous bend. Watching video from the monitoring camera, I was amazed that even empty flat-top trailers were lifting a leg at seemingly low speeds.
It was pointed out that the trailer always drags the prime mover over and by the time it is felt in the driver’s seat, it’s too late to save it.
robthedog:
Case closed currywurst has stated all facts time to move on
But as per usual, he hasn’t got a clue, even though he tries to come across as the expert.
I had to watch a safety video, (Iirc, during fuel cartage training) taken from a traffic monitoring camera. A decreasing radius, off camber left hand bend with a history of truck rollovers. A video was taken at low speed, through the windscreen of a truck, at what appeared to be a tight, but otherwise innocuous bend. Watching video from the monitoring camera, I was amazed that even empty flat-top trailers were lifting a leg at seemingly low speeds.
It was pointed out that the trailer always drags the prime mover over and by the time it is felt in the driver’s seat, it’s too late to save it.
I pointed out the pendulum effect, the dangers of a tightening curve and the fact that rigids are more stable than artics and how fast it all goes pear shaped ( too fast to react ), I was just a bit surprised at how much angle the trailer reached and took for it to drag the unit over.
Which is inconsistent with your observations how ?.
Bearing in mind I was paid to drive 38t, bulk liquid carrying vehicles, around corners on a closed test circuit, as fast as possible without turning them over.
Speeds which probably would have seen you bottling out.
Speeds way above those which would have put an artic on its side.
robthedog:
Case closed currywurst has stated all facts time to move on
But as per usual, he hasn’t got a clue, even though he tries to come across as the expert.
I had to watch a safety video, (Iirc, during fuel cartage training) taken from a traffic monitoring camera. A decreasing radius, off camber left hand bend with a history of truck rollovers. A video was taken at low speed, through the windscreen of a truck, at what appeared to be a tight, but otherwise innocuous bend. Watching video from the monitoring camera, I was amazed that even empty flat-top trailers were lifting a leg at seemingly low speeds.
It was pointed out that the trailer always drags the prime mover over and by the time it is felt in the driver’s seat, it’s too late to save it.
I pointed out the pendulum effect, the dangers of a tightening curve and the fact that rigids are more stable than artics and how fast it all goes pear shaped ( too fast to react ), I was just a bit surprised at how much angle the trailer reached and took for it to drag the unit over.
Which is inconsistent with your observations how ?.
Bearing in mind I was paid to drive 38t, bulk liquid carrying vehicles, around corners on a closed test circuit, as fast as possible without turning them over.
Speeds which probably would have seen you bottling out.
Speeds way above those which would have put an artic on its side.
Bulk liquids for UPS yeah right your raving mad old son
I saw this from the Southbound M11 shortly after it happened. It was definitely on the Northbound.
Very relieved to hear that the driver was not seriously hurt because the cab had smashed down on the barrier and was looking very squashed.
There were other vehicles on the M11 that looked as if they had gone into each other as traffic stopped. The tailback was miles.
I was in the third lane Southbound (In a Landrover, going to collect a trailer) and the halfwit in front of me came to a standstill. In the third lane. To rubberneck. He wound down his window and leaned out for a better look. The police on scene were yelling at him.
robthedog:
Bulk liquids for UPS yeah right your raving mad old son
I didn’t always work for UPS or Carryfast or the council before that.
Works driver where these among others were made.Wouldn’t have been much point in testing them empty and not like you stole them.
