ARB bar shaking

[Hutch Addicted PP Member Find all posts View Profile Close Hutch]

I would change the bar to a Toyota approved version (Sahara bar).
Check with your insurance company, you will be surprised
Do not ask why, just check for yourself.

Why would you do that.... secondly I doubt that the bar is still available. People have a look at the body mounts, the rubbers r massive and their is plenty of movement, the toyota bar on the 120 was worst than the TJM on the 150.

Hutch- Prado 2012 petrol with the TJM Catologue.

[Jon Avid PP Poster! Find all posts View Profile Close Jon]

Even though I said do not ask, I am still questioned why.
If you insist on an answer, PM me.

[rightway Junior Member Find all posts View Profile Close rightway]

My ARB bar shakes as well, if you look where the bar mounts the chassis you will see, on mine anyway, the mounts are corrugated both horizontally and vertically, these corrogations effectively act like a spring and allow the bar to move around so in an impact the corrugated sections move and crush before the force of the impact buggers the chassis. Apparently it's got something to do with allowing a certain amount of squash happen before the airbag goes off. If the bar was solid mounted like the one on my 80 series we would be seeing a lot more airbags going off.

[lugueto Junior Member Find all posts View Profile Close lugueto]

Well sadly I had to see my ARB bar go as it was in a crash. It protected my car to a point where I was seriously impressed, shakiness didn't mean it would protect it any less.

My bar was a non-airbag model so I didnt have the corrugations, but the corrugations arent the source of the shake.. The body mounts on these cars are softer for a more forgiving ride, as mentioned before.

[netarch Member Find all posts View Profile Close netarch]

My TJM bar also appears to shake relative to the bonnet of the car, it surprised me at first as I expected it to be very rigid. But after checking all of the bolts the only thing that made sense was that it was caused but the body of the car moving differently to the chassis. It appears that it is just one of those things you have to get use to, though after a few years it still concerns me how much it appears to move whilst driving on the rough stuff. I went so far as to put marks around the mount to see if it did move and so far it is still in the original position.

[lugueto Junior Member Find all posts View Profile Close lugueto]

I agree it is kind of nerve racking to see the bar shake and it will make you doubt if the bar will hold up to the task when the time comes. I sometimes had friends in front of me on the convoy saying that they could see the bar shake, same as I could relative to the hood. As I said before, it held up the way it supposed to on a pretty bad crash, even though she shook pretty aggressively.

So, we dont have much more to do other than to get used to the shake (I never noticed within a couple of weeks of installing the bar) and hope to god you never have to actually depend on it.

[REV Find all posts View Profile Close REV]

Why would you do that.... secondly I doubt that the bar is still available. People have a look at the body mounts, the rubbers r massive and their is plenty of movement, the toyota bar on the 120 was worst than the TJM on the 150.

Hutch- Prado 2012 petrol with the TJM Catologue.

Have to agree with Hutch on this one, the sovereign bar on the 120 shook a lot.

But the TJM on my 150 in comparison, hardly even moves.



Cheers
REV

[Beach Advanced Member Find all posts View Profile Close Beach]

Is there any documentation available from ARB regarding the ADR & airbag compliance of their bullbars?

[kav Avid PP Poster! Find all posts View Profile Close kav]

When you mount an ARB bar on a 120 they are solid mounted and CAN NOT move , flex or wobble PERIOD. You have to leave a minimum 25 mm between the body of the car and the bullbar for movement of the body of the car . I know this because I have the instructions and installed mine at home , and when installed correctly they do not move no matter where or how fast you drive .

[croozza Avid PP Poster! Find all posts View Profile Close croozza]

When you mount an ARB bar on a 120 they are solid mounted and CAN NOT move , flex or wobble PERIOD. You have to leave a minimum 25 mm between the body of the car and the bullbar for movement of the body of the car . I know this because I have the instructions and installed mine at home , and when installed correctly they do not move no matter where or how fast you drive .

If you read the original post, it is for a 90 series. The bar is different and mounts differently to a 120.

[kav Avid PP Poster! Find all posts View Profile Close kav]

Doh !

[Anth120playdo Banned Find all posts View Profile Close Anth120playdo]

After returning from our recent outback trip, one members Arb bar had dropped in a big way.
You could put your hand under the headlight.
Know where your mountings & bolts are & keep check on them as these things can happen.
I tightened my sovereign bar before we left, the drivers side 19mm bolt that goes into the end of the bar vibrated out in one day, it was late in the trip, I checked it every day, lucky I didn't Loise the bolt it was just sitting there.

But yes it is normal for there to seem like a lit of movement between the body & bar.
Sometimes when your flexed up, take a look, your 25mm gap can be 0 at one side & 50mm at the other.
The chassis does twist differently to the body.

[lugueto Junior Member Find all posts View Profile Close lugueto]

When you mount an ARB bar on a 120 they are solid mounted and CAN NOT move , flex or wobble PERIOD. You have to leave a minimum 25 mm between the body of the car and the bullbar for movement of the body of the car . I know this because I have the instructions and installed mine at home , and when installed correctly they do not move no matter where or how fast you drive .

As said before, the bar, while solidly mounted, will seem to be shaking, due to the difference between the body movement and the chassis movement. Hence the 1inch gap on the instructions.

If you read the original post, it is for a 90 series. The bar is different and mounts differently to a 120.

The principle is still the same..

[croozza Avid PP Poster! Find all posts View Profile Close croozza]

As said before, the bar, while solidly mounted, will seem to be shaking, due to the difference between the body movement and the chassis movement. Hence the 1inch gap on the instructions.



The principle is still the same..

The only principle that is the same is that it mounts on the front of the vehicle. The bar is totally different in design as well as how it mounts to the vehicle.

[Hughda Lurker Find all posts View Profile Close Hughda]

My ARB bar was shaking so badly I replaced 3 UHF aerials. Then my workshop found there were two extra "pins" that could be fitted. It now shakes a bit, but not nearly as badly as before.