Yeah, actually that is what I want. I don't plan on bashing this one around, that's why I have an 80. Different strokes and all...
Like I said in my last post, great, they gave you what you want. I didn't say that it was wrong for everyone, I said I don't like and am going to change it for my needs.
FWIW, I don't pretend to understand more about crash dynamics than the Toyota and ARB engineers who designed these items. If the crush pulse is set up a certain way, I'm not going to go changing it because I want some mythical "offroad" protection.
How do you know how much it changes? Do you have any data that says that the accordian mounts on an ARB change this rate? Again, that's fine if you don't want a strong front bumper for off-road purposes. There's nothing "mythical" about what I want. Just keep what you have and you'll have no worries.
For my uses (animal strikes) the bar is fine. However, I do take exception to the "damage multiplier" comment. If it can take hitting a 400 pound kangaroo at 60 mph without damage, that's good enough for me.
How do you know this? Have you ever seen a 100 ARB bar after it hit a 400 pound kangaroo at 60 mph and sustain no damage? Do you really think with the accordian mounts that the bumper didn't budge? Or are you basing this on how ARB's have held up on previous models like the 60 and 80?
I'm not rock-crawling with this thing, or even hitting 1000 km of corrugations. If ultimate offroad strength is your goal, you shouldn't have bought a 100 to begin with.
That's you're opinion, don't try to make it gospel because that's what you want out of the 100. There are a lot of other people out there that use the 100 for exactly that. I do want to go rock-crawling with mine and I believe it can handle it just fine with the right modifications.
The front of the 100 frame is set up with "crush cans" right off the Araco assemblyline, so you can't get away from them no matter what bumper you buy.
No, it doesn't have crush cans on the frame after you remove the stock bumper. It has a boxed frame. Please show me these crush cans you speak of. It has indentations in the frame farther back by the shock mounts. Not even close to the same thing as the accordian mounts out on the ARB mount.
That's because a body on frame truck will never be as safe as a unibody design with crumple zones unless you can design in something similar on the frame. The idea is to direct crash forces away from the passenger compartment. With a traditional body on frame, there is very little room to create such zones, which is why this design has such higher rates of injury to passengers. Those forces cannot be dissipated by the frame because it is so strong, so where is the weakness, and where does the destructive energy end up? Right where you and your family are sitting. Having a lot of steel up front is a good thing, but IMHO it doesn't outweigh the decades of advancement in crash safety technology since Mercedes-Benz patented the crumple zone in 1951. Bottom line, you already have "crush cans" built into the front of the frame of your 100.
Again, show me these "crush cans" you speak of. And for the record, I really don't care about uni-body designs. They have no relevance to this conversation. The accordian mounts do one thing, they absorb some lower speed impact energy so the air-bags don't go off in a crash that they wouldn't go off in with a stock bumper. But, no one has shown what the difference is in terms of speed. In my opinion, the accordian mounts are a "lawyer added" feature. And having a solid front bumper doesn't take away from "decades of advancement in crash safety technology".
Obviously, the ultimate in safety would be something like a unibody minivan, but no minivans I know of have low range gears, and more importantly, they're not Land Cruisers...
Yeah, they're called Jeep Grand Cherokees. Ever see one of them flex off-road? So much so that the doors won't open?
As for the TJM, it is made of thinner plate steel with different mounts from the ARB. The whole bar will crush, so no corrugated "crush cans" are needed. See the pictures of the Disco at
http://www.tjmbullbars.com. Nothing wrong with that design, just a different approach to "airbag compatibility."
I don't see anything on their site about how the bar will crush. Can you give me more detail as to what you are referring to?
BTW, I am one of those 80 guys you mention. Before the 100 we had two 80s, one of which was a `97 with airbags. The only bullbar I contemplated for that one was the TJM, because it was "airbag rated" unlike the ARB. It's a personal choice, and I don't begrudge the multitudes of folks who choose the ARB. Like I said up top, different strokes...
And again, that's fine "different strokes" and all. If you want that, great. If you don't plan on taking your 100 off-road, great. But, just because you also have this bumper don't be afraid to discuss its short-comings when used off-road. I too want a very safe vehicle for my family to travel in. I'm just not convinced that the accordian mounts do anything other than create a "damage multiplier" on the front of the 100.
I have first-hand experience with an ARB that had accordian mounts that was fitted on a LR Disco 2. It was not a pretty site. Almost every time I took it off-road it shifted. Once, bad enough that I had to take the bumper off and pound the accordian mounts with a hammer to get the bumper to sit right again. I finally had to weld in some plate steel to keep it from doing this. I will have to do the same thing for the one I have now.
Since this is limited to the 100 series it hasn't shown up that much here yet. In the LR community, this has been an issue for many years on both the Disco and Disco 2 that have ARB air bag compatible bars fitted to them. There is quite a few documented occurrences on the web.
Anyway, that's my $0.02 (mostly),