L322 Bullbar development! Finally

Heres a good article that addresses the subject from a Mechanical Engineering perspective, has a section on bumper material and design which shows the actual acceleration measurements which are referred to as the crash pulse.

Am i really reading this on a Friday night!!

Application of crash pulse on the car crashworthiness design (sagepub.com)

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Originally Posted by 101RRS

Do you have a pic of the certification plate for the L322 that is fitted to the bar?

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I guess not.

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Originally Posted by vbrab

Finally had bar fitted on next trip to Perth after it came back from powdercoaters.
Bar weighs in at 26kgs and likely a couple of kilos for steel mount brackets (and lights).
Trade some of that weight gain off against removal of steel cross rib that fits behind plastic bumper.
I attach pic of ribbed reinforcing behind the bar in area where cross rib was removed and likely very much stronger up in that area than original.
Airflow appears to be unimpeded, as drove back the 1000k in 44c heat and nil chanage in temperature from pre bar fitting,.
Perhaps some aerodynamic "drag" from bar as fuel use per 100k appears up from usual 9 to 9.9L/100k, but will have to drive a bit more to see if that was maybe partly due to headwinds and travelling quick.
Unfortunately, maker says that will only supply if he does all fitting, and that he will not send interstate for others to fit.
Am not concerned for kangaroos now, worst that might happen is lose a couple of lights.
Final cost was $2900.

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Thank you.
Is it available without the 2 vertical bars between the driving lights?

Cheers

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Originally Posted by Piddler

Thank you.
Is it available without the 2 vertical bars between the driving lights?

Cheers

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Really?

Then it becomes different construction and none of the criteria will be met.

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Originally Posted by ramblingboy42

Really?

Then it becomes different construction and none of the criteria will be met.

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I disagree, No it doesn't, the 2 vertical pipes between driving lights, I think there ugly apart from restricting airflow.

Structural strength from those pipes in that spot is insignificant. (I am an engineer)

Just a question?

Cheers Piddler

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Originally Posted by Piddler

I disagree, No it doesn't, the 2 vertical pipes between driving lights, I think there ugly apart from restricting airflow.

Structural strength from those pipes in that spot is insignificant. (I am an engineer)

Just a question?

Cheers Piddler

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I wasn't keen on the two vertical pipes (aesthetically), but figured they would prevent a roo getting through to the grill area (if the lights were not there).
When they were fitting the bar, they take out a section of cross member that sits behind the plastic bumper, and in doing that it appears to free up airflow coming into lower section of radiator/intercooler area.
Have since done a 250k run in 40C+ and no apparent change in temp guage from pre bar, so perhaps not getting any less air through. So some sort of airflow trade-off perhaps as more getting through below.
My real concern is roos, emus or goats. If I cop a camel or a cow, then all bets are off and I will no doubt be speaking to the insurers anyway.

I can only suggest that talk to the maker, he says will,only supply and fit (so a WA only item anyway). (Irvin Bullbars Midvale, Perth.)
If there is no structural benefit from the two vertical bars then maybe that is a possibilty.
I am happy enough reckoning that I at least have most kangaroos sorted.
I don't think there are any "pretty" roo bars, they are there for a purpose beyond aesthetics.

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Originally Posted by ramblingboy42

Really?

Then it becomes different construction and none of the criteria will be met.

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Originally Posted by vbrab

I can only suggest that talk to the maker, he says will,only supply and fit (so a WA only item anyway). (Irvin Bullbars Midvale, Perth.)
If there is no structural benefit from the two vertical bars then maybe that is a possibilty.
I am happy enough reckoning that I at least have most kangaroos sorted.
I don't think there are any "pretty" roo bars, they are there for a purpose beyond aesthetics.

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Does it have the ADR certification plate attached to the bar at all?

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Originally Posted by irubix

Does it have the ADR certification plate attached to the bar at all?

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I have asked this a couple of times above with no response so I guess not.

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Originally Posted by 101RRS

I have asked this a couple of times above with no response so I guess not.

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Sorry slow getting back (fighting my D2a).
This is the plate attached to the bar.
Makes all sorts of claims, which I am not fussed about testing out, but it does have a plate which will be useful for licencing.
Attachment 168403